/* This file contains the definitions and documentation for the
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/* This file contains the definitions and documentation for the
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Register Transfer Expressions (rtx's) that make up the
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Register Transfer Expressions (rtx's) that make up the
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Register Transfer Language (rtl) used in the Back End of the GNU compiler.
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Register Transfer Language (rtl) used in the Back End of the GNU compiler.
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Copyright (C) 1987, 1988, 1992, 1994, 1995, 1997, 1998, 1999, 2000, 2004,
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Copyright (C) 1987, 1988, 1992, 1994, 1995, 1997, 1998, 1999, 2000, 2004,
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2005, 2006, 2007 Free Software Foundation, Inc.
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2005, 2006, 2007 Free Software Foundation, Inc.
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This file is part of GCC.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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Software Foundation; either version 3, or (at your option) any later
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version.
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version.
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|
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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for more details.
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|
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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along with GCC; see the file COPYING3. If not see
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. */
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. */
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/* Expression definitions and descriptions for all targets are in this file.
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/* Expression definitions and descriptions for all targets are in this file.
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Some will not be used for some targets.
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Some will not be used for some targets.
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The fields in the cpp macro call "DEF_RTL_EXPR()"
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The fields in the cpp macro call "DEF_RTL_EXPR()"
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are used to create declarations in the C source of the compiler.
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are used to create declarations in the C source of the compiler.
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The fields are:
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The fields are:
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1. The internal name of the rtx used in the C source.
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1. The internal name of the rtx used in the C source.
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It is a tag in the enumeration "enum rtx_code" defined in "rtl.h".
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It is a tag in the enumeration "enum rtx_code" defined in "rtl.h".
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By convention these are in UPPER_CASE.
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By convention these are in UPPER_CASE.
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2. The name of the rtx in the external ASCII format read by
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2. The name of the rtx in the external ASCII format read by
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read_rtx(), and printed by print_rtx().
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read_rtx(), and printed by print_rtx().
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These names are stored in rtx_name[].
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These names are stored in rtx_name[].
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By convention these are the internal (field 1) names in lower_case.
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By convention these are the internal (field 1) names in lower_case.
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3. The print format, and type of each rtx->u.fld[] (field) in this rtx.
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3. The print format, and type of each rtx->u.fld[] (field) in this rtx.
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These formats are stored in rtx_format[].
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These formats are stored in rtx_format[].
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The meaning of the formats is documented in front of this array in rtl.c
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The meaning of the formats is documented in front of this array in rtl.c
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4. The class of the rtx. These are stored in rtx_class and are accessed
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4. The class of the rtx. These are stored in rtx_class and are accessed
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via the GET_RTX_CLASS macro. They are defined as follows:
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via the GET_RTX_CLASS macro. They are defined as follows:
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RTX_CONST_OBJ
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RTX_CONST_OBJ
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an rtx code that can be used to represent a constant object
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an rtx code that can be used to represent a constant object
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(e.g, CONST_INT)
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(e.g, CONST_INT)
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RTX_OBJ
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RTX_OBJ
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an rtx code that can be used to represent an object (e.g, REG, MEM)
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an rtx code that can be used to represent an object (e.g, REG, MEM)
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RTX_COMPARE
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RTX_COMPARE
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an rtx code for a comparison (e.g, LT, GT)
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an rtx code for a comparison (e.g, LT, GT)
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RTX_COMM_COMPARE
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RTX_COMM_COMPARE
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an rtx code for a commutative comparison (e.g, EQ, NE, ORDERED)
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an rtx code for a commutative comparison (e.g, EQ, NE, ORDERED)
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RTX_UNARY
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RTX_UNARY
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an rtx code for a unary arithmetic expression (e.g, NEG, NOT)
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an rtx code for a unary arithmetic expression (e.g, NEG, NOT)
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RTX_COMM_ARITH
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RTX_COMM_ARITH
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an rtx code for a commutative binary operation (e.g,, PLUS, MULT)
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an rtx code for a commutative binary operation (e.g,, PLUS, MULT)
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RTX_TERNARY
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RTX_TERNARY
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an rtx code for a non-bitfield three input operation (IF_THEN_ELSE)
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an rtx code for a non-bitfield three input operation (IF_THEN_ELSE)
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RTX_BIN_ARITH
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RTX_BIN_ARITH
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an rtx code for a non-commutative binary operation (e.g., MINUS, DIV)
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an rtx code for a non-commutative binary operation (e.g., MINUS, DIV)
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RTX_BITFIELD_OPS
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RTX_BITFIELD_OPS
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an rtx code for a bit-field operation (ZERO_EXTRACT, SIGN_EXTRACT)
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an rtx code for a bit-field operation (ZERO_EXTRACT, SIGN_EXTRACT)
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RTX_INSN
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RTX_INSN
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an rtx code for a machine insn (INSN, JUMP_INSN, CALL_INSN)
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an rtx code for a machine insn (INSN, JUMP_INSN, CALL_INSN)
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RTX_MATCH
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RTX_MATCH
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an rtx code for something that matches in insns (e.g, MATCH_DUP)
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an rtx code for something that matches in insns (e.g, MATCH_DUP)
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RTX_AUTOINC
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RTX_AUTOINC
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an rtx code for autoincrement addressing modes (e.g. POST_DEC)
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an rtx code for autoincrement addressing modes (e.g. POST_DEC)
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RTX_EXTRA
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RTX_EXTRA
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everything else
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everything else
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All of the expressions that appear only in machine descriptions,
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All of the expressions that appear only in machine descriptions,
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not in RTL used by the compiler itself, are at the end of the file. */
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not in RTL used by the compiler itself, are at the end of the file. */
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/* Unknown, or no such operation; the enumeration constant should have
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/* Unknown, or no such operation; the enumeration constant should have
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value zero. */
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value zero. */
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DEF_RTL_EXPR(UNKNOWN, "UnKnown", "*", RTX_EXTRA)
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DEF_RTL_EXPR(UNKNOWN, "UnKnown", "*", RTX_EXTRA)
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/* ---------------------------------------------------------------------
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/* ---------------------------------------------------------------------
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Expressions used in constructing lists.
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Expressions used in constructing lists.
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--------------------------------------------------------------------- */
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--------------------------------------------------------------------- */
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/* a linked list of expressions */
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/* a linked list of expressions */
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DEF_RTL_EXPR(EXPR_LIST, "expr_list", "ee", RTX_EXTRA)
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DEF_RTL_EXPR(EXPR_LIST, "expr_list", "ee", RTX_EXTRA)
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/* a linked list of instructions.
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/* a linked list of instructions.
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The insns are represented in print by their uids. */
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The insns are represented in print by their uids. */
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DEF_RTL_EXPR(INSN_LIST, "insn_list", "ue", RTX_EXTRA)
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DEF_RTL_EXPR(INSN_LIST, "insn_list", "ue", RTX_EXTRA)
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/* a linked list of dependencies.
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/* a linked list of dependencies.
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The insns are represented in print by their uids.
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The insns are represented in print by their uids.
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Operand 2 is the status of a dependence (see sched-int.h for more). */
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Operand 2 is the status of a dependence (see sched-int.h for more). */
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DEF_RTL_EXPR(DEPS_LIST, "deps_list", "uei", RTX_EXTRA)
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DEF_RTL_EXPR(DEPS_LIST, "deps_list", "uei", RTX_EXTRA)
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/* SEQUENCE appears in the result of a `gen_...' function
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/* SEQUENCE appears in the result of a `gen_...' function
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for a DEFINE_EXPAND that wants to make several insns.
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for a DEFINE_EXPAND that wants to make several insns.
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Its elements are the bodies of the insns that should be made.
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Its elements are the bodies of the insns that should be made.
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`emit_insn' takes the SEQUENCE apart and makes separate insns. */
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`emit_insn' takes the SEQUENCE apart and makes separate insns. */
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DEF_RTL_EXPR(SEQUENCE, "sequence", "E", RTX_EXTRA)
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DEF_RTL_EXPR(SEQUENCE, "sequence", "E", RTX_EXTRA)
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/* Refers to the address of its argument. This is only used in alias.c. */
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/* Refers to the address of its argument. This is only used in alias.c. */
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DEF_RTL_EXPR(ADDRESS, "address", "e", RTX_MATCH)
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DEF_RTL_EXPR(ADDRESS, "address", "e", RTX_MATCH)
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/* ----------------------------------------------------------------------
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/* ----------------------------------------------------------------------
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Expression types used for things in the instruction chain.
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Expression types used for things in the instruction chain.
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All formats must start with "iuu" to handle the chain.
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All formats must start with "iuu" to handle the chain.
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Each insn expression holds an rtl instruction and its semantics
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Each insn expression holds an rtl instruction and its semantics
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during back-end processing.
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during back-end processing.
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See macros's in "rtl.h" for the meaning of each rtx->u.fld[].
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See macros's in "rtl.h" for the meaning of each rtx->u.fld[].
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---------------------------------------------------------------------- */
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---------------------------------------------------------------------- */
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/* An instruction that cannot jump. */
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/* An instruction that cannot jump. */
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DEF_RTL_EXPR(INSN, "insn", "iuuBieiee", RTX_INSN)
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DEF_RTL_EXPR(INSN, "insn", "iuuBieiee", RTX_INSN)
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/* An instruction that can possibly jump.
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/* An instruction that can possibly jump.
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Fields ( rtx->u.fld[] ) have exact same meaning as INSN's. */
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Fields ( rtx->u.fld[] ) have exact same meaning as INSN's. */
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DEF_RTL_EXPR(JUMP_INSN, "jump_insn", "iuuBieiee0", RTX_INSN)
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DEF_RTL_EXPR(JUMP_INSN, "jump_insn", "iuuBieiee0", RTX_INSN)
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/* An instruction that can possibly call a subroutine
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/* An instruction that can possibly call a subroutine
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but which will not change which instruction comes next
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but which will not change which instruction comes next
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in the current function.
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in the current function.
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Field ( rtx->u.fld[9] ) is CALL_INSN_FUNCTION_USAGE.
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Field ( rtx->u.fld[9] ) is CALL_INSN_FUNCTION_USAGE.
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All other fields ( rtx->u.fld[] ) have exact same meaning as INSN's. */
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All other fields ( rtx->u.fld[] ) have exact same meaning as INSN's. */
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DEF_RTL_EXPR(CALL_INSN, "call_insn", "iuuBieieee", RTX_INSN)
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DEF_RTL_EXPR(CALL_INSN, "call_insn", "iuuBieieee", RTX_INSN)
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/* A marker that indicates that control will not flow through. */
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/* A marker that indicates that control will not flow through. */
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DEF_RTL_EXPR(BARRIER, "barrier", "iuu000000", RTX_EXTRA)
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DEF_RTL_EXPR(BARRIER, "barrier", "iuu000000", RTX_EXTRA)
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/* Holds a label that is followed by instructions.
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/* Holds a label that is followed by instructions.
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Operand:
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Operand:
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4: is used in jump.c for the use-count of the label.
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4: is used in jump.c for the use-count of the label.
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5: is used in flow.c to point to the chain of label_ref's to this label.
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5: is used in flow.c to point to the chain of label_ref's to this label.
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6: is a number that is unique in the entire compilation.
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6: is a number that is unique in the entire compilation.
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7: is the user-given name of the label, if any. */
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7: is the user-given name of the label, if any. */
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DEF_RTL_EXPR(CODE_LABEL, "code_label", "iuuB00is", RTX_EXTRA)
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DEF_RTL_EXPR(CODE_LABEL, "code_label", "iuuB00is", RTX_EXTRA)
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#ifdef USE_MAPPED_LOCATION
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#ifdef USE_MAPPED_LOCATION
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/* Say where in the code a source line starts, for symbol table's sake.
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/* Say where in the code a source line starts, for symbol table's sake.
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Operand:
|
Operand:
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4: unused if line number > 0, note-specific data otherwise.
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4: unused if line number > 0, note-specific data otherwise.
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5: line number if > 0, enum note_insn otherwise.
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5: line number if > 0, enum note_insn otherwise.
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6: CODE_LABEL_NUMBER if line number == NOTE_INSN_DELETED_LABEL. */
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6: CODE_LABEL_NUMBER if line number == NOTE_INSN_DELETED_LABEL. */
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#else
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#else
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/* Say where in the code a source line starts, for symbol table's sake.
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/* Say where in the code a source line starts, for symbol table's sake.
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Operand:
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Operand:
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4: filename, if line number > 0, note-specific data otherwise.
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4: filename, if line number > 0, note-specific data otherwise.
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5: line number if > 0, enum note_insn otherwise.
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5: line number if > 0, enum note_insn otherwise.
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6: unique number if line number == note_insn_deleted_label. */
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6: unique number if line number == note_insn_deleted_label. */
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#endif
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#endif
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DEF_RTL_EXPR(NOTE, "note", "iuuB0ni", RTX_EXTRA)
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DEF_RTL_EXPR(NOTE, "note", "iuuB0ni", RTX_EXTRA)
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/* ----------------------------------------------------------------------
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/* ----------------------------------------------------------------------
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Top level constituents of INSN, JUMP_INSN and CALL_INSN.
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Top level constituents of INSN, JUMP_INSN and CALL_INSN.
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---------------------------------------------------------------------- */
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---------------------------------------------------------------------- */
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/* Conditionally execute code.
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/* Conditionally execute code.
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Operand 0 is the condition that if true, the code is executed.
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Operand 0 is the condition that if true, the code is executed.
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Operand 1 is the code to be executed (typically a SET).
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Operand 1 is the code to be executed (typically a SET).
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Semantics are that there are no side effects if the condition
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Semantics are that there are no side effects if the condition
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is false. This pattern is created automatically by the if_convert
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is false. This pattern is created automatically by the if_convert
|
pass run after reload or by target-specific splitters. */
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pass run after reload or by target-specific splitters. */
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DEF_RTL_EXPR(COND_EXEC, "cond_exec", "ee", RTX_EXTRA)
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DEF_RTL_EXPR(COND_EXEC, "cond_exec", "ee", RTX_EXTRA)
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/* Several operations to be done in parallel (perhaps under COND_EXEC). */
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/* Several operations to be done in parallel (perhaps under COND_EXEC). */
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DEF_RTL_EXPR(PARALLEL, "parallel", "E", RTX_EXTRA)
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DEF_RTL_EXPR(PARALLEL, "parallel", "E", RTX_EXTRA)
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/* A string that is passed through to the assembler as input.
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/* A string that is passed through to the assembler as input.
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One can obviously pass comments through by using the
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One can obviously pass comments through by using the
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assembler comment syntax.
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assembler comment syntax.
|
These occur in an insn all by themselves as the PATTERN.
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These occur in an insn all by themselves as the PATTERN.
|
They also appear inside an ASM_OPERANDS
|
They also appear inside an ASM_OPERANDS
|
as a convenient way to hold a string. */
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as a convenient way to hold a string. */
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DEF_RTL_EXPR(ASM_INPUT, "asm_input", "s", RTX_EXTRA)
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DEF_RTL_EXPR(ASM_INPUT, "asm_input", "s", RTX_EXTRA)
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|
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#ifdef USE_MAPPED_LOCATION
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#ifdef USE_MAPPED_LOCATION
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/* An assembler instruction with operands.
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/* An assembler instruction with operands.
|
1st operand is the instruction template.
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1st operand is the instruction template.
|
2nd operand is the constraint for the output.
|
2nd operand is the constraint for the output.
|
3rd operand is the number of the output this expression refers to.
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3rd operand is the number of the output this expression refers to.
|
When an insn stores more than one value, a separate ASM_OPERANDS
|
When an insn stores more than one value, a separate ASM_OPERANDS
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is made for each output; this integer distinguishes them.
|
is made for each output; this integer distinguishes them.
|
4th is a vector of values of input operands.
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4th is a vector of values of input operands.
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5th is a vector of modes and constraints for the input operands.
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5th is a vector of modes and constraints for the input operands.
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Each element is an ASM_INPUT containing a constraint string
|
Each element is an ASM_INPUT containing a constraint string
|
and whose mode indicates the mode of the input operand.
|
and whose mode indicates the mode of the input operand.
|
6th is the source line number. */
|
6th is the source line number. */
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DEF_RTL_EXPR(ASM_OPERANDS, "asm_operands", "ssiEEi", RTX_EXTRA)
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DEF_RTL_EXPR(ASM_OPERANDS, "asm_operands", "ssiEEi", RTX_EXTRA)
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#else
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#else
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/* An assembler instruction with operands.
|
/* An assembler instruction with operands.
|
1st operand is the instruction template.
|
1st operand is the instruction template.
|
2nd operand is the constraint for the output.
|
2nd operand is the constraint for the output.
|
3rd operand is the number of the output this expression refers to.
|
3rd operand is the number of the output this expression refers to.
|
When an insn stores more than one value, a separate ASM_OPERANDS
|
When an insn stores more than one value, a separate ASM_OPERANDS
|
is made for each output; this integer distinguishes them.
|
is made for each output; this integer distinguishes them.
|
4th is a vector of values of input operands.
|
4th is a vector of values of input operands.
|
5th is a vector of modes and constraints for the input operands.
|
5th is a vector of modes and constraints for the input operands.
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Each element is an ASM_INPUT containing a constraint string
|
Each element is an ASM_INPUT containing a constraint string
|
and whose mode indicates the mode of the input operand.
|
and whose mode indicates the mode of the input operand.
|
6th is the name of the containing source file.
|
6th is the name of the containing source file.
|
7th is the source line number. */
|
7th is the source line number. */
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DEF_RTL_EXPR(ASM_OPERANDS, "asm_operands", "ssiEEsi", RTX_EXTRA)
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DEF_RTL_EXPR(ASM_OPERANDS, "asm_operands", "ssiEEsi", RTX_EXTRA)
|
#endif
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#endif
|
|
|
/* A machine-specific operation.
|
/* A machine-specific operation.
|
1st operand is a vector of operands being used by the operation so that
|
1st operand is a vector of operands being used by the operation so that
|
any needed reloads can be done.
|
any needed reloads can be done.
|
2nd operand is a unique value saying which of a number of machine-specific
|
2nd operand is a unique value saying which of a number of machine-specific
|
operations is to be performed.
|
operations is to be performed.
|
(Note that the vector must be the first operand because of the way that
|
(Note that the vector must be the first operand because of the way that
|
genrecog.c record positions within an insn.)
|
genrecog.c record positions within an insn.)
|
This can occur all by itself in a PATTERN, as a component of a PARALLEL,
|
This can occur all by itself in a PATTERN, as a component of a PARALLEL,
|
or inside an expression. */
|
or inside an expression. */
|
DEF_RTL_EXPR(UNSPEC, "unspec", "Ei", RTX_EXTRA)
|
DEF_RTL_EXPR(UNSPEC, "unspec", "Ei", RTX_EXTRA)
|
|
|
/* Similar, but a volatile operation and one which may trap. */
|
/* Similar, but a volatile operation and one which may trap. */
|
DEF_RTL_EXPR(UNSPEC_VOLATILE, "unspec_volatile", "Ei", RTX_EXTRA)
|
DEF_RTL_EXPR(UNSPEC_VOLATILE, "unspec_volatile", "Ei", RTX_EXTRA)
|
|
|
/* Vector of addresses, stored as full words. */
|
/* Vector of addresses, stored as full words. */
|
/* Each element is a LABEL_REF to a CODE_LABEL whose address we want. */
|
/* Each element is a LABEL_REF to a CODE_LABEL whose address we want. */
|
DEF_RTL_EXPR(ADDR_VEC, "addr_vec", "E", RTX_EXTRA)
|
DEF_RTL_EXPR(ADDR_VEC, "addr_vec", "E", RTX_EXTRA)
|
|
|
/* Vector of address differences X0 - BASE, X1 - BASE, ...
|
/* Vector of address differences X0 - BASE, X1 - BASE, ...
|
First operand is BASE; the vector contains the X's.
|
First operand is BASE; the vector contains the X's.
|
The machine mode of this rtx says how much space to leave
|
The machine mode of this rtx says how much space to leave
|
for each difference and is adjusted by branch shortening if
|
for each difference and is adjusted by branch shortening if
|
CASE_VECTOR_SHORTEN_MODE is defined.
|
CASE_VECTOR_SHORTEN_MODE is defined.
|
The third and fourth operands store the target labels with the
|
The third and fourth operands store the target labels with the
|
minimum and maximum addresses respectively.
|
minimum and maximum addresses respectively.
|
The fifth operand stores flags for use by branch shortening.
|
The fifth operand stores flags for use by branch shortening.
|
Set at the start of shorten_branches:
|
Set at the start of shorten_branches:
|
min_align: the minimum alignment for any of the target labels.
|
min_align: the minimum alignment for any of the target labels.
|
base_after_vec: true iff BASE is after the ADDR_DIFF_VEC.
|
base_after_vec: true iff BASE is after the ADDR_DIFF_VEC.
|
min_after_vec: true iff minimum addr target label is after the ADDR_DIFF_VEC.
|
min_after_vec: true iff minimum addr target label is after the ADDR_DIFF_VEC.
|
max_after_vec: true iff maximum addr target label is after the ADDR_DIFF_VEC.
|
max_after_vec: true iff maximum addr target label is after the ADDR_DIFF_VEC.
|
min_after_base: true iff minimum address target label is after BASE.
|
min_after_base: true iff minimum address target label is after BASE.
|
max_after_base: true iff maximum address target label is after BASE.
|
max_after_base: true iff maximum address target label is after BASE.
|
Set by the actual branch shortening process:
|
Set by the actual branch shortening process:
|
offset_unsigned: true iff offsets have to be treated as unsigned.
|
offset_unsigned: true iff offsets have to be treated as unsigned.
|
scale: scaling that is necessary to make offsets fit into the mode.
|
scale: scaling that is necessary to make offsets fit into the mode.
|
|
|
The third, fourth and fifth operands are only valid when
|
The third, fourth and fifth operands are only valid when
|
CASE_VECTOR_SHORTEN_MODE is defined, and only in an optimizing
|
CASE_VECTOR_SHORTEN_MODE is defined, and only in an optimizing
|
compilations. */
|
compilations. */
|
|
|
DEF_RTL_EXPR(ADDR_DIFF_VEC, "addr_diff_vec", "eEee0", RTX_EXTRA)
|
DEF_RTL_EXPR(ADDR_DIFF_VEC, "addr_diff_vec", "eEee0", RTX_EXTRA)
|
|
|
/* Memory prefetch, with attributes supported on some targets.
|
/* Memory prefetch, with attributes supported on some targets.
|
Operand 1 is the address of the memory to fetch.
|
Operand 1 is the address of the memory to fetch.
|
Operand 2 is 1 for a write access, 0 otherwise.
|
Operand 2 is 1 for a write access, 0 otherwise.
|
Operand 3 is the level of temporal locality; 0 means there is no
|
Operand 3 is the level of temporal locality; 0 means there is no
|
temporal locality and 1, 2, and 3 are for increasing levels of temporal
|
temporal locality and 1, 2, and 3 are for increasing levels of temporal
|
locality.
|
locality.
|
|
|
The attributes specified by operands 2 and 3 are ignored for targets
|
The attributes specified by operands 2 and 3 are ignored for targets
|
whose prefetch instructions do not support them. */
|
whose prefetch instructions do not support them. */
|
DEF_RTL_EXPR(PREFETCH, "prefetch", "eee", RTX_EXTRA)
|
DEF_RTL_EXPR(PREFETCH, "prefetch", "eee", RTX_EXTRA)
|
|
|
/* ----------------------------------------------------------------------
|
/* ----------------------------------------------------------------------
|
At the top level of an instruction (perhaps under PARALLEL).
|
At the top level of an instruction (perhaps under PARALLEL).
|
---------------------------------------------------------------------- */
|
---------------------------------------------------------------------- */
|
|
|
/* Assignment.
|
/* Assignment.
|
Operand 1 is the location (REG, MEM, PC, CC0 or whatever) assigned to.
|
Operand 1 is the location (REG, MEM, PC, CC0 or whatever) assigned to.
|
Operand 2 is the value stored there.
|
Operand 2 is the value stored there.
|
ALL assignment must use SET.
|
ALL assignment must use SET.
|
Instructions that do multiple assignments must use multiple SET,
|
Instructions that do multiple assignments must use multiple SET,
|
under PARALLEL. */
|
under PARALLEL. */
|
DEF_RTL_EXPR(SET, "set", "ee", RTX_EXTRA)
|
DEF_RTL_EXPR(SET, "set", "ee", RTX_EXTRA)
|
|
|
/* Indicate something is used in a way that we don't want to explain.
|
/* Indicate something is used in a way that we don't want to explain.
|
For example, subroutine calls will use the register
|
For example, subroutine calls will use the register
|
in which the static chain is passed. */
|
in which the static chain is passed. */
|
DEF_RTL_EXPR(USE, "use", "e", RTX_EXTRA)
|
DEF_RTL_EXPR(USE, "use", "e", RTX_EXTRA)
|
|
|
/* Indicate something is clobbered in a way that we don't want to explain.
|
/* Indicate something is clobbered in a way that we don't want to explain.
|
For example, subroutine calls will clobber some physical registers
|
For example, subroutine calls will clobber some physical registers
|
(the ones that are by convention not saved). */
|
(the ones that are by convention not saved). */
|
DEF_RTL_EXPR(CLOBBER, "clobber", "e", RTX_EXTRA)
|
DEF_RTL_EXPR(CLOBBER, "clobber", "e", RTX_EXTRA)
|
|
|
/* Call a subroutine.
|
/* Call a subroutine.
|
Operand 1 is the address to call.
|
Operand 1 is the address to call.
|
Operand 2 is the number of arguments. */
|
Operand 2 is the number of arguments. */
|
|
|
DEF_RTL_EXPR(CALL, "call", "ee", RTX_EXTRA)
|
DEF_RTL_EXPR(CALL, "call", "ee", RTX_EXTRA)
|
|
|
/* Return from a subroutine. */
|
/* Return from a subroutine. */
|
|
|
DEF_RTL_EXPR(RETURN, "return", "", RTX_EXTRA)
|
DEF_RTL_EXPR(RETURN, "return", "", RTX_EXTRA)
|
|
|
/* Conditional trap.
|
/* Conditional trap.
|
Operand 1 is the condition.
|
Operand 1 is the condition.
|
Operand 2 is the trap code.
|
Operand 2 is the trap code.
|
For an unconditional trap, make the condition (const_int 1). */
|
For an unconditional trap, make the condition (const_int 1). */
|
DEF_RTL_EXPR(TRAP_IF, "trap_if", "ee", RTX_EXTRA)
|
DEF_RTL_EXPR(TRAP_IF, "trap_if", "ee", RTX_EXTRA)
|
|
|
/* Placeholder for _Unwind_Resume before we know if a function call
|
/* Placeholder for _Unwind_Resume before we know if a function call
|
or a branch is needed. Operand 1 is the exception region from
|
or a branch is needed. Operand 1 is the exception region from
|
which control is flowing. */
|
which control is flowing. */
|
DEF_RTL_EXPR(RESX, "resx", "i", RTX_EXTRA)
|
DEF_RTL_EXPR(RESX, "resx", "i", RTX_EXTRA)
|
|
|
/* ----------------------------------------------------------------------
|
/* ----------------------------------------------------------------------
|
Primitive values for use in expressions.
|
Primitive values for use in expressions.
|
---------------------------------------------------------------------- */
|
---------------------------------------------------------------------- */
|
|
|
/* numeric integer constant */
|
/* numeric integer constant */
|
DEF_RTL_EXPR(CONST_INT, "const_int", "w", RTX_CONST_OBJ)
|
DEF_RTL_EXPR(CONST_INT, "const_int", "w", RTX_CONST_OBJ)
|
|
|
/* numeric floating point constant.
|
/* numeric floating point constant.
|
Operands hold the value. They are all 'w' and there may be from 2 to 6;
|
Operands hold the value. They are all 'w' and there may be from 2 to 6;
|
see real.h. */
|
see real.h. */
|
DEF_RTL_EXPR(CONST_DOUBLE, "const_double", CONST_DOUBLE_FORMAT, RTX_CONST_OBJ)
|
DEF_RTL_EXPR(CONST_DOUBLE, "const_double", CONST_DOUBLE_FORMAT, RTX_CONST_OBJ)
|
|
|
/* Describes a vector constant. */
|
/* Describes a vector constant. */
|
DEF_RTL_EXPR(CONST_VECTOR, "const_vector", "E", RTX_CONST_OBJ)
|
DEF_RTL_EXPR(CONST_VECTOR, "const_vector", "E", RTX_CONST_OBJ)
|
|
|
/* String constant. Used for attributes in machine descriptions and
|
/* String constant. Used for attributes in machine descriptions and
|
for special cases in DWARF2 debug output. NOT used for source-
|
for special cases in DWARF2 debug output. NOT used for source-
|
language string constants. */
|
language string constants. */
|
DEF_RTL_EXPR(CONST_STRING, "const_string", "s", RTX_OBJ)
|
DEF_RTL_EXPR(CONST_STRING, "const_string", "s", RTX_OBJ)
|
|
|
/* This is used to encapsulate an expression whose value is constant
|
/* This is used to encapsulate an expression whose value is constant
|
(such as the sum of a SYMBOL_REF and a CONST_INT) so that it will be
|
(such as the sum of a SYMBOL_REF and a CONST_INT) so that it will be
|
recognized as a constant operand rather than by arithmetic instructions. */
|
recognized as a constant operand rather than by arithmetic instructions. */
|
|
|
DEF_RTL_EXPR(CONST, "const", "e", RTX_CONST_OBJ)
|
DEF_RTL_EXPR(CONST, "const", "e", RTX_CONST_OBJ)
|
|
|
/* program counter. Ordinary jumps are represented
|
/* program counter. Ordinary jumps are represented
|
by a SET whose first operand is (PC). */
|
by a SET whose first operand is (PC). */
|
DEF_RTL_EXPR(PC, "pc", "", RTX_OBJ)
|
DEF_RTL_EXPR(PC, "pc", "", RTX_OBJ)
|
|
|
/* Used in the cselib routines to describe a value. Objects of this
|
/* Used in the cselib routines to describe a value. Objects of this
|
kind are only allocated in cselib.c, in an alloc pool instead of
|
kind are only allocated in cselib.c, in an alloc pool instead of
|
in GC memory. The only operand of a VALUE is a cselib_val_struct. */
|
in GC memory. The only operand of a VALUE is a cselib_val_struct. */
|
DEF_RTL_EXPR(VALUE, "value", "0", RTX_OBJ)
|
DEF_RTL_EXPR(VALUE, "value", "0", RTX_OBJ)
|
|
|
/* A register. The "operand" is the register number, accessed with
|
/* A register. The "operand" is the register number, accessed with
|
the REGNO macro. If this number is less than FIRST_PSEUDO_REGISTER
|
the REGNO macro. If this number is less than FIRST_PSEUDO_REGISTER
|
than a hardware register is being referred to. The second operand
|
than a hardware register is being referred to. The second operand
|
holds the original register number - this will be different for a
|
holds the original register number - this will be different for a
|
pseudo register that got turned into a hard register. The third
|
pseudo register that got turned into a hard register. The third
|
operand points to a reg_attrs structure.
|
operand points to a reg_attrs structure.
|
This rtx needs to have as many (or more) fields as a MEM, since we
|
This rtx needs to have as many (or more) fields as a MEM, since we
|
can change REG rtx's into MEMs during reload. */
|
can change REG rtx's into MEMs during reload. */
|
DEF_RTL_EXPR(REG, "reg", "i00", RTX_OBJ)
|
DEF_RTL_EXPR(REG, "reg", "i00", RTX_OBJ)
|
|
|
/* A scratch register. This represents a register used only within a
|
/* A scratch register. This represents a register used only within a
|
single insn. It will be turned into a REG during register allocation
|
single insn. It will be turned into a REG during register allocation
|
or reload unless the constraint indicates that the register won't be
|
or reload unless the constraint indicates that the register won't be
|
needed, in which case it can remain a SCRATCH. This code is
|
needed, in which case it can remain a SCRATCH. This code is
|
marked as having one operand so it can be turned into a REG. */
|
marked as having one operand so it can be turned into a REG. */
|
DEF_RTL_EXPR(SCRATCH, "scratch", "0", RTX_OBJ)
|
DEF_RTL_EXPR(SCRATCH, "scratch", "0", RTX_OBJ)
|
|
|
/* One word of a multi-word value.
|
/* One word of a multi-word value.
|
The first operand is the complete value; the second says which word.
|
The first operand is the complete value; the second says which word.
|
The WORDS_BIG_ENDIAN flag controls whether word number 0
|
The WORDS_BIG_ENDIAN flag controls whether word number 0
|
(as numbered in a SUBREG) is the most or least significant word.
|
(as numbered in a SUBREG) is the most or least significant word.
|
|
|
This is also used to refer to a value in a different machine mode.
|
This is also used to refer to a value in a different machine mode.
|
For example, it can be used to refer to a SImode value as if it were
|
For example, it can be used to refer to a SImode value as if it were
|
Qimode, or vice versa. Then the word number is always 0. */
|
Qimode, or vice versa. Then the word number is always 0. */
|
DEF_RTL_EXPR(SUBREG, "subreg", "ei", RTX_EXTRA)
|
DEF_RTL_EXPR(SUBREG, "subreg", "ei", RTX_EXTRA)
|
|
|
/* This one-argument rtx is used for move instructions
|
/* This one-argument rtx is used for move instructions
|
that are guaranteed to alter only the low part of a destination.
|
that are guaranteed to alter only the low part of a destination.
|
Thus, (SET (SUBREG:HI (REG...)) (MEM:HI ...))
|
Thus, (SET (SUBREG:HI (REG...)) (MEM:HI ...))
|
has an unspecified effect on the high part of REG,
|
has an unspecified effect on the high part of REG,
|
but (SET (STRICT_LOW_PART (SUBREG:HI (REG...))) (MEM:HI ...))
|
but (SET (STRICT_LOW_PART (SUBREG:HI (REG...))) (MEM:HI ...))
|
is guaranteed to alter only the bits of REG that are in HImode.
|
is guaranteed to alter only the bits of REG that are in HImode.
|
|
|
The actual instruction used is probably the same in both cases,
|
The actual instruction used is probably the same in both cases,
|
but the register constraints may be tighter when STRICT_LOW_PART
|
but the register constraints may be tighter when STRICT_LOW_PART
|
is in use. */
|
is in use. */
|
|
|
DEF_RTL_EXPR(STRICT_LOW_PART, "strict_low_part", "e", RTX_EXTRA)
|
DEF_RTL_EXPR(STRICT_LOW_PART, "strict_low_part", "e", RTX_EXTRA)
|
|
|
/* (CONCAT a b) represents the virtual concatenation of a and b
|
/* (CONCAT a b) represents the virtual concatenation of a and b
|
to make a value that has as many bits as a and b put together.
|
to make a value that has as many bits as a and b put together.
|
This is used for complex values. Normally it appears only
|
This is used for complex values. Normally it appears only
|
in DECL_RTLs and during RTL generation, but not in the insn chain. */
|
in DECL_RTLs and during RTL generation, but not in the insn chain. */
|
DEF_RTL_EXPR(CONCAT, "concat", "ee", RTX_OBJ)
|
DEF_RTL_EXPR(CONCAT, "concat", "ee", RTX_OBJ)
|
|
|
/* A memory location; operand is the address. The second operand is the
|
/* A memory location; operand is the address. The second operand is the
|
alias set to which this MEM belongs. We use `0' instead of `w' for this
|
alias set to which this MEM belongs. We use `0' instead of `w' for this
|
field so that the field need not be specified in machine descriptions. */
|
field so that the field need not be specified in machine descriptions. */
|
DEF_RTL_EXPR(MEM, "mem", "e0", RTX_OBJ)
|
DEF_RTL_EXPR(MEM, "mem", "e0", RTX_OBJ)
|
|
|
/* Reference to an assembler label in the code for this function.
|
/* Reference to an assembler label in the code for this function.
|
The operand is a CODE_LABEL found in the insn chain. */
|
The operand is a CODE_LABEL found in the insn chain. */
|
DEF_RTL_EXPR(LABEL_REF, "label_ref", "u", RTX_CONST_OBJ)
|
DEF_RTL_EXPR(LABEL_REF, "label_ref", "u", RTX_CONST_OBJ)
|
|
|
/* Reference to a named label:
|
/* Reference to a named label:
|
Operand 0: label name
|
Operand 0: label name
|
Operand 1: flags (see SYMBOL_FLAG_* in rtl.h)
|
Operand 1: flags (see SYMBOL_FLAG_* in rtl.h)
|
Operand 2: tree from which this symbol is derived, or null.
|
Operand 2: tree from which this symbol is derived, or null.
|
This is either a DECL node, or some kind of constant. */
|
This is either a DECL node, or some kind of constant. */
|
DEF_RTL_EXPR(SYMBOL_REF, "symbol_ref", "s00", RTX_CONST_OBJ)
|
DEF_RTL_EXPR(SYMBOL_REF, "symbol_ref", "s00", RTX_CONST_OBJ)
|
|
|
/* The condition code register is represented, in our imagination,
|
/* The condition code register is represented, in our imagination,
|
as a register holding a value that can be compared to zero.
|
as a register holding a value that can be compared to zero.
|
In fact, the machine has already compared them and recorded the
|
In fact, the machine has already compared them and recorded the
|
results; but instructions that look at the condition code
|
results; but instructions that look at the condition code
|
pretend to be looking at the entire value and comparing it. */
|
pretend to be looking at the entire value and comparing it. */
|
DEF_RTL_EXPR(CC0, "cc0", "", RTX_OBJ)
|
DEF_RTL_EXPR(CC0, "cc0", "", RTX_OBJ)
|
|
|
/* ----------------------------------------------------------------------
|
/* ----------------------------------------------------------------------
|
Expressions for operators in an rtl pattern
|
Expressions for operators in an rtl pattern
|
---------------------------------------------------------------------- */
|
---------------------------------------------------------------------- */
|
|
|
/* if_then_else. This is used in representing ordinary
|
/* if_then_else. This is used in representing ordinary
|
conditional jump instructions.
|
conditional jump instructions.
|
Operand:
|
Operand:
|
0: condition
|
0: condition
|
1: then expr
|
1: then expr
|
2: else expr */
|
2: else expr */
|
DEF_RTL_EXPR(IF_THEN_ELSE, "if_then_else", "eee", RTX_TERNARY)
|
DEF_RTL_EXPR(IF_THEN_ELSE, "if_then_else", "eee", RTX_TERNARY)
|
|
|
/* Comparison, produces a condition code result. */
|
/* Comparison, produces a condition code result. */
|
DEF_RTL_EXPR(COMPARE, "compare", "ee", RTX_BIN_ARITH)
|
DEF_RTL_EXPR(COMPARE, "compare", "ee", RTX_BIN_ARITH)
|
|
|
/* plus */
|
/* plus */
|
DEF_RTL_EXPR(PLUS, "plus", "ee", RTX_COMM_ARITH)
|
DEF_RTL_EXPR(PLUS, "plus", "ee", RTX_COMM_ARITH)
|
|
|
/* Operand 0 minus operand 1. */
|
/* Operand 0 minus operand 1. */
|
DEF_RTL_EXPR(MINUS, "minus", "ee", RTX_BIN_ARITH)
|
DEF_RTL_EXPR(MINUS, "minus", "ee", RTX_BIN_ARITH)
|
|
|
/* Minus operand 0. */
|
/* Minus operand 0. */
|
DEF_RTL_EXPR(NEG, "neg", "e", RTX_UNARY)
|
DEF_RTL_EXPR(NEG, "neg", "e", RTX_UNARY)
|
|
|
DEF_RTL_EXPR(MULT, "mult", "ee", RTX_COMM_ARITH)
|
DEF_RTL_EXPR(MULT, "mult", "ee", RTX_COMM_ARITH)
|
|
|
/* Operand 0 divided by operand 1. */
|
/* Operand 0 divided by operand 1. */
|
DEF_RTL_EXPR(DIV, "div", "ee", RTX_BIN_ARITH)
|
DEF_RTL_EXPR(DIV, "div", "ee", RTX_BIN_ARITH)
|
/* Remainder of operand 0 divided by operand 1. */
|
/* Remainder of operand 0 divided by operand 1. */
|
DEF_RTL_EXPR(MOD, "mod", "ee", RTX_BIN_ARITH)
|
DEF_RTL_EXPR(MOD, "mod", "ee", RTX_BIN_ARITH)
|
|
|
/* Unsigned divide and remainder. */
|
/* Unsigned divide and remainder. */
|
DEF_RTL_EXPR(UDIV, "udiv", "ee", RTX_BIN_ARITH)
|
DEF_RTL_EXPR(UDIV, "udiv", "ee", RTX_BIN_ARITH)
|
DEF_RTL_EXPR(UMOD, "umod", "ee", RTX_BIN_ARITH)
|
DEF_RTL_EXPR(UMOD, "umod", "ee", RTX_BIN_ARITH)
|
|
|
/* Bitwise operations. */
|
/* Bitwise operations. */
|
DEF_RTL_EXPR(AND, "and", "ee", RTX_COMM_ARITH)
|
DEF_RTL_EXPR(AND, "and", "ee", RTX_COMM_ARITH)
|
DEF_RTL_EXPR(IOR, "ior", "ee", RTX_COMM_ARITH)
|
DEF_RTL_EXPR(IOR, "ior", "ee", RTX_COMM_ARITH)
|
DEF_RTL_EXPR(XOR, "xor", "ee", RTX_COMM_ARITH)
|
DEF_RTL_EXPR(XOR, "xor", "ee", RTX_COMM_ARITH)
|
DEF_RTL_EXPR(NOT, "not", "e", RTX_UNARY)
|
DEF_RTL_EXPR(NOT, "not", "e", RTX_UNARY)
|
|
|
/* Operand:
|
/* Operand:
|
0: value to be shifted.
|
0: value to be shifted.
|
1: number of bits. */
|
1: number of bits. */
|
DEF_RTL_EXPR(ASHIFT, "ashift", "ee", RTX_BIN_ARITH) /* shift left */
|
DEF_RTL_EXPR(ASHIFT, "ashift", "ee", RTX_BIN_ARITH) /* shift left */
|
DEF_RTL_EXPR(ROTATE, "rotate", "ee", RTX_BIN_ARITH) /* rotate left */
|
DEF_RTL_EXPR(ROTATE, "rotate", "ee", RTX_BIN_ARITH) /* rotate left */
|
DEF_RTL_EXPR(ASHIFTRT, "ashiftrt", "ee", RTX_BIN_ARITH) /* arithmetic shift right */
|
DEF_RTL_EXPR(ASHIFTRT, "ashiftrt", "ee", RTX_BIN_ARITH) /* arithmetic shift right */
|
DEF_RTL_EXPR(LSHIFTRT, "lshiftrt", "ee", RTX_BIN_ARITH) /* logical shift right */
|
DEF_RTL_EXPR(LSHIFTRT, "lshiftrt", "ee", RTX_BIN_ARITH) /* logical shift right */
|
DEF_RTL_EXPR(ROTATERT, "rotatert", "ee", RTX_BIN_ARITH) /* rotate right */
|
DEF_RTL_EXPR(ROTATERT, "rotatert", "ee", RTX_BIN_ARITH) /* rotate right */
|
|
|
/* Minimum and maximum values of two operands. We need both signed and
|
/* Minimum and maximum values of two operands. We need both signed and
|
unsigned forms. (We cannot use MIN for SMIN because it conflicts
|
unsigned forms. (We cannot use MIN for SMIN because it conflicts
|
with a macro of the same name.) The signed variants should be used
|
with a macro of the same name.) The signed variants should be used
|
with floating point. Further, if both operands are zeros, or if either
|
with floating point. Further, if both operands are zeros, or if either
|
operand is NaN, then it is unspecified which of the two operands is
|
operand is NaN, then it is unspecified which of the two operands is
|
returned as the result. */
|
returned as the result. */
|
|
|
DEF_RTL_EXPR(SMIN, "smin", "ee", RTX_COMM_ARITH)
|
DEF_RTL_EXPR(SMIN, "smin", "ee", RTX_COMM_ARITH)
|
DEF_RTL_EXPR(SMAX, "smax", "ee", RTX_COMM_ARITH)
|
DEF_RTL_EXPR(SMAX, "smax", "ee", RTX_COMM_ARITH)
|
DEF_RTL_EXPR(UMIN, "umin", "ee", RTX_COMM_ARITH)
|
DEF_RTL_EXPR(UMIN, "umin", "ee", RTX_COMM_ARITH)
|
DEF_RTL_EXPR(UMAX, "umax", "ee", RTX_COMM_ARITH)
|
DEF_RTL_EXPR(UMAX, "umax", "ee", RTX_COMM_ARITH)
|
|
|
/* These unary operations are used to represent incrementation
|
/* These unary operations are used to represent incrementation
|
and decrementation as they occur in memory addresses.
|
and decrementation as they occur in memory addresses.
|
The amount of increment or decrement are not represented
|
The amount of increment or decrement are not represented
|
because they can be understood from the machine-mode of the
|
because they can be understood from the machine-mode of the
|
containing MEM. These operations exist in only two cases:
|
containing MEM. These operations exist in only two cases:
|
1. pushes onto the stack.
|
1. pushes onto the stack.
|
2. created automatically by the life_analysis pass in flow.c. */
|
2. created automatically by the life_analysis pass in flow.c. */
|
DEF_RTL_EXPR(PRE_DEC, "pre_dec", "e", RTX_AUTOINC)
|
DEF_RTL_EXPR(PRE_DEC, "pre_dec", "e", RTX_AUTOINC)
|
DEF_RTL_EXPR(PRE_INC, "pre_inc", "e", RTX_AUTOINC)
|
DEF_RTL_EXPR(PRE_INC, "pre_inc", "e", RTX_AUTOINC)
|
DEF_RTL_EXPR(POST_DEC, "post_dec", "e", RTX_AUTOINC)
|
DEF_RTL_EXPR(POST_DEC, "post_dec", "e", RTX_AUTOINC)
|
DEF_RTL_EXPR(POST_INC, "post_inc", "e", RTX_AUTOINC)
|
DEF_RTL_EXPR(POST_INC, "post_inc", "e", RTX_AUTOINC)
|
|
|
/* These binary operations are used to represent generic address
|
/* These binary operations are used to represent generic address
|
side-effects in memory addresses, except for simple incrementation
|
side-effects in memory addresses, except for simple incrementation
|
or decrementation which use the above operations. They are
|
or decrementation which use the above operations. They are
|
created automatically by the life_analysis pass in flow.c.
|
created automatically by the life_analysis pass in flow.c.
|
The first operand is a REG which is used as the address.
|
The first operand is a REG which is used as the address.
|
The second operand is an expression that is assigned to the
|
The second operand is an expression that is assigned to the
|
register, either before (PRE_MODIFY) or after (POST_MODIFY)
|
register, either before (PRE_MODIFY) or after (POST_MODIFY)
|
evaluating the address.
|
evaluating the address.
|
Currently, the compiler can only handle second operands of the
|
Currently, the compiler can only handle second operands of the
|
form (plus (reg) (reg)) and (plus (reg) (const_int)), where
|
form (plus (reg) (reg)) and (plus (reg) (const_int)), where
|
the first operand of the PLUS has to be the same register as
|
the first operand of the PLUS has to be the same register as
|
the first operand of the *_MODIFY. */
|
the first operand of the *_MODIFY. */
|
DEF_RTL_EXPR(PRE_MODIFY, "pre_modify", "ee", RTX_AUTOINC)
|
DEF_RTL_EXPR(PRE_MODIFY, "pre_modify", "ee", RTX_AUTOINC)
|
DEF_RTL_EXPR(POST_MODIFY, "post_modify", "ee", RTX_AUTOINC)
|
DEF_RTL_EXPR(POST_MODIFY, "post_modify", "ee", RTX_AUTOINC)
|
|
|
/* Comparison operations. The ordered comparisons exist in two
|
/* Comparison operations. The ordered comparisons exist in two
|
flavors, signed and unsigned. */
|
flavors, signed and unsigned. */
|
DEF_RTL_EXPR(NE, "ne", "ee", RTX_COMM_COMPARE)
|
DEF_RTL_EXPR(NE, "ne", "ee", RTX_COMM_COMPARE)
|
DEF_RTL_EXPR(EQ, "eq", "ee", RTX_COMM_COMPARE)
|
DEF_RTL_EXPR(EQ, "eq", "ee", RTX_COMM_COMPARE)
|
DEF_RTL_EXPR(GE, "ge", "ee", RTX_COMPARE)
|
DEF_RTL_EXPR(GE, "ge", "ee", RTX_COMPARE)
|
DEF_RTL_EXPR(GT, "gt", "ee", RTX_COMPARE)
|
DEF_RTL_EXPR(GT, "gt", "ee", RTX_COMPARE)
|
DEF_RTL_EXPR(LE, "le", "ee", RTX_COMPARE)
|
DEF_RTL_EXPR(LE, "le", "ee", RTX_COMPARE)
|
DEF_RTL_EXPR(LT, "lt", "ee", RTX_COMPARE)
|
DEF_RTL_EXPR(LT, "lt", "ee", RTX_COMPARE)
|
DEF_RTL_EXPR(GEU, "geu", "ee", RTX_COMPARE)
|
DEF_RTL_EXPR(GEU, "geu", "ee", RTX_COMPARE)
|
DEF_RTL_EXPR(GTU, "gtu", "ee", RTX_COMPARE)
|
DEF_RTL_EXPR(GTU, "gtu", "ee", RTX_COMPARE)
|
DEF_RTL_EXPR(LEU, "leu", "ee", RTX_COMPARE)
|
DEF_RTL_EXPR(LEU, "leu", "ee", RTX_COMPARE)
|
DEF_RTL_EXPR(LTU, "ltu", "ee", RTX_COMPARE)
|
DEF_RTL_EXPR(LTU, "ltu", "ee", RTX_COMPARE)
|
|
|
/* Additional floating point unordered comparison flavors. */
|
/* Additional floating point unordered comparison flavors. */
|
DEF_RTL_EXPR(UNORDERED, "unordered", "ee", RTX_COMM_COMPARE)
|
DEF_RTL_EXPR(UNORDERED, "unordered", "ee", RTX_COMM_COMPARE)
|
DEF_RTL_EXPR(ORDERED, "ordered", "ee", RTX_COMM_COMPARE)
|
DEF_RTL_EXPR(ORDERED, "ordered", "ee", RTX_COMM_COMPARE)
|
|
|
/* These are equivalent to unordered or ... */
|
/* These are equivalent to unordered or ... */
|
DEF_RTL_EXPR(UNEQ, "uneq", "ee", RTX_COMM_COMPARE)
|
DEF_RTL_EXPR(UNEQ, "uneq", "ee", RTX_COMM_COMPARE)
|
DEF_RTL_EXPR(UNGE, "unge", "ee", RTX_COMPARE)
|
DEF_RTL_EXPR(UNGE, "unge", "ee", RTX_COMPARE)
|
DEF_RTL_EXPR(UNGT, "ungt", "ee", RTX_COMPARE)
|
DEF_RTL_EXPR(UNGT, "ungt", "ee", RTX_COMPARE)
|
DEF_RTL_EXPR(UNLE, "unle", "ee", RTX_COMPARE)
|
DEF_RTL_EXPR(UNLE, "unle", "ee", RTX_COMPARE)
|
DEF_RTL_EXPR(UNLT, "unlt", "ee", RTX_COMPARE)
|
DEF_RTL_EXPR(UNLT, "unlt", "ee", RTX_COMPARE)
|
|
|
/* This is an ordered NE, ie !UNEQ, ie false for NaN. */
|
/* This is an ordered NE, ie !UNEQ, ie false for NaN. */
|
DEF_RTL_EXPR(LTGT, "ltgt", "ee", RTX_COMM_COMPARE)
|
DEF_RTL_EXPR(LTGT, "ltgt", "ee", RTX_COMM_COMPARE)
|
|
|
/* Represents the result of sign-extending the sole operand.
|
/* Represents the result of sign-extending the sole operand.
|
The machine modes of the operand and of the SIGN_EXTEND expression
|
The machine modes of the operand and of the SIGN_EXTEND expression
|
determine how much sign-extension is going on. */
|
determine how much sign-extension is going on. */
|
DEF_RTL_EXPR(SIGN_EXTEND, "sign_extend", "e", RTX_UNARY)
|
DEF_RTL_EXPR(SIGN_EXTEND, "sign_extend", "e", RTX_UNARY)
|
|
|
/* Similar for zero-extension (such as unsigned short to int). */
|
/* Similar for zero-extension (such as unsigned short to int). */
|
DEF_RTL_EXPR(ZERO_EXTEND, "zero_extend", "e", RTX_UNARY)
|
DEF_RTL_EXPR(ZERO_EXTEND, "zero_extend", "e", RTX_UNARY)
|
|
|
/* Similar but here the operand has a wider mode. */
|
/* Similar but here the operand has a wider mode. */
|
DEF_RTL_EXPR(TRUNCATE, "truncate", "e", RTX_UNARY)
|
DEF_RTL_EXPR(TRUNCATE, "truncate", "e", RTX_UNARY)
|
|
|
/* Similar for extending floating-point values (such as SFmode to DFmode). */
|
/* Similar for extending floating-point values (such as SFmode to DFmode). */
|
DEF_RTL_EXPR(FLOAT_EXTEND, "float_extend", "e", RTX_UNARY)
|
DEF_RTL_EXPR(FLOAT_EXTEND, "float_extend", "e", RTX_UNARY)
|
DEF_RTL_EXPR(FLOAT_TRUNCATE, "float_truncate", "e", RTX_UNARY)
|
DEF_RTL_EXPR(FLOAT_TRUNCATE, "float_truncate", "e", RTX_UNARY)
|
|
|
/* Conversion of fixed point operand to floating point value. */
|
/* Conversion of fixed point operand to floating point value. */
|
DEF_RTL_EXPR(FLOAT, "float", "e", RTX_UNARY)
|
DEF_RTL_EXPR(FLOAT, "float", "e", RTX_UNARY)
|
|
|
/* With fixed-point machine mode:
|
/* With fixed-point machine mode:
|
Conversion of floating point operand to fixed point value.
|
Conversion of floating point operand to fixed point value.
|
Value is defined only when the operand's value is an integer.
|
Value is defined only when the operand's value is an integer.
|
With floating-point machine mode (and operand with same mode):
|
With floating-point machine mode (and operand with same mode):
|
Operand is rounded toward zero to produce an integer value
|
Operand is rounded toward zero to produce an integer value
|
represented in floating point. */
|
represented in floating point. */
|
DEF_RTL_EXPR(FIX, "fix", "e", RTX_UNARY)
|
DEF_RTL_EXPR(FIX, "fix", "e", RTX_UNARY)
|
|
|
/* Conversion of unsigned fixed point operand to floating point value. */
|
/* Conversion of unsigned fixed point operand to floating point value. */
|
DEF_RTL_EXPR(UNSIGNED_FLOAT, "unsigned_float", "e", RTX_UNARY)
|
DEF_RTL_EXPR(UNSIGNED_FLOAT, "unsigned_float", "e", RTX_UNARY)
|
|
|
/* With fixed-point machine mode:
|
/* With fixed-point machine mode:
|
Conversion of floating point operand to *unsigned* fixed point value.
|
Conversion of floating point operand to *unsigned* fixed point value.
|
Value is defined only when the operand's value is an integer. */
|
Value is defined only when the operand's value is an integer. */
|
DEF_RTL_EXPR(UNSIGNED_FIX, "unsigned_fix", "e", RTX_UNARY)
|
DEF_RTL_EXPR(UNSIGNED_FIX, "unsigned_fix", "e", RTX_UNARY)
|
|
|
/* Absolute value */
|
/* Absolute value */
|
DEF_RTL_EXPR(ABS, "abs", "e", RTX_UNARY)
|
DEF_RTL_EXPR(ABS, "abs", "e", RTX_UNARY)
|
|
|
/* Square root */
|
/* Square root */
|
DEF_RTL_EXPR(SQRT, "sqrt", "e", RTX_UNARY)
|
DEF_RTL_EXPR(SQRT, "sqrt", "e", RTX_UNARY)
|
|
|
/* Find first bit that is set.
|
/* Find first bit that is set.
|
Value is 1 + number of trailing zeros in the arg.,
|
Value is 1 + number of trailing zeros in the arg.,
|
or 0 if arg is 0. */
|
or 0 if arg is 0. */
|
DEF_RTL_EXPR(FFS, "ffs", "e", RTX_UNARY)
|
DEF_RTL_EXPR(FFS, "ffs", "e", RTX_UNARY)
|
|
|
/* Count leading zeros. */
|
/* Count leading zeros. */
|
DEF_RTL_EXPR(CLZ, "clz", "e", RTX_UNARY)
|
DEF_RTL_EXPR(CLZ, "clz", "e", RTX_UNARY)
|
|
|
/* Count trailing zeros. */
|
/* Count trailing zeros. */
|
DEF_RTL_EXPR(CTZ, "ctz", "e", RTX_UNARY)
|
DEF_RTL_EXPR(CTZ, "ctz", "e", RTX_UNARY)
|
|
|
/* Population count (number of 1 bits). */
|
/* Population count (number of 1 bits). */
|
DEF_RTL_EXPR(POPCOUNT, "popcount", "e", RTX_UNARY)
|
DEF_RTL_EXPR(POPCOUNT, "popcount", "e", RTX_UNARY)
|
|
|
/* Population parity (number of 1 bits modulo 2). */
|
/* Population parity (number of 1 bits modulo 2). */
|
DEF_RTL_EXPR(PARITY, "parity", "e", RTX_UNARY)
|
DEF_RTL_EXPR(PARITY, "parity", "e", RTX_UNARY)
|
|
|
/* Reference to a signed bit-field of specified size and position.
|
/* Reference to a signed bit-field of specified size and position.
|
Operand 0 is the memory unit (usually SImode or QImode) which
|
Operand 0 is the memory unit (usually SImode or QImode) which
|
contains the field's first bit. Operand 1 is the width, in bits.
|
contains the field's first bit. Operand 1 is the width, in bits.
|
Operand 2 is the number of bits in the memory unit before the
|
Operand 2 is the number of bits in the memory unit before the
|
first bit of this field.
|
first bit of this field.
|
If BITS_BIG_ENDIAN is defined, the first bit is the msb and
|
If BITS_BIG_ENDIAN is defined, the first bit is the msb and
|
operand 2 counts from the msb of the memory unit.
|
operand 2 counts from the msb of the memory unit.
|
Otherwise, the first bit is the lsb and operand 2 counts from
|
Otherwise, the first bit is the lsb and operand 2 counts from
|
the lsb of the memory unit.
|
the lsb of the memory unit.
|
This kind of expression can not appear as an lvalue in RTL. */
|
This kind of expression can not appear as an lvalue in RTL. */
|
DEF_RTL_EXPR(SIGN_EXTRACT, "sign_extract", "eee", RTX_BITFIELD_OPS)
|
DEF_RTL_EXPR(SIGN_EXTRACT, "sign_extract", "eee", RTX_BITFIELD_OPS)
|
|
|
/* Similar for unsigned bit-field.
|
/* Similar for unsigned bit-field.
|
But note! This kind of expression _can_ appear as an lvalue. */
|
But note! This kind of expression _can_ appear as an lvalue. */
|
DEF_RTL_EXPR(ZERO_EXTRACT, "zero_extract", "eee", RTX_BITFIELD_OPS)
|
DEF_RTL_EXPR(ZERO_EXTRACT, "zero_extract", "eee", RTX_BITFIELD_OPS)
|
|
|
/* For RISC machines. These save memory when splitting insns. */
|
/* For RISC machines. These save memory when splitting insns. */
|
|
|
/* HIGH are the high-order bits of a constant expression. */
|
/* HIGH are the high-order bits of a constant expression. */
|
DEF_RTL_EXPR(HIGH, "high", "e", RTX_CONST_OBJ)
|
DEF_RTL_EXPR(HIGH, "high", "e", RTX_CONST_OBJ)
|
|
|
/* LO_SUM is the sum of a register and the low-order bits
|
/* LO_SUM is the sum of a register and the low-order bits
|
of a constant expression. */
|
of a constant expression. */
|
DEF_RTL_EXPR(LO_SUM, "lo_sum", "ee", RTX_OBJ)
|
DEF_RTL_EXPR(LO_SUM, "lo_sum", "ee", RTX_OBJ)
|
|
|
/* Describes a merge operation between two vector values.
|
/* Describes a merge operation between two vector values.
|
Operands 0 and 1 are the vectors to be merged, operand 2 is a bitmask
|
Operands 0 and 1 are the vectors to be merged, operand 2 is a bitmask
|
that specifies where the parts of the result are taken from. Set bits
|
that specifies where the parts of the result are taken from. Set bits
|
indicate operand 0, clear bits indicate operand 1. The parts are defined
|
indicate operand 0, clear bits indicate operand 1. The parts are defined
|
by the mode of the vectors. */
|
by the mode of the vectors. */
|
DEF_RTL_EXPR(VEC_MERGE, "vec_merge", "eee", RTX_TERNARY)
|
DEF_RTL_EXPR(VEC_MERGE, "vec_merge", "eee", RTX_TERNARY)
|
|
|
/* Describes an operation that selects parts of a vector.
|
/* Describes an operation that selects parts of a vector.
|
Operands 0 is the source vector, operand 1 is a PARALLEL that contains
|
Operands 0 is the source vector, operand 1 is a PARALLEL that contains
|
a CONST_INT for each of the subparts of the result vector, giving the
|
a CONST_INT for each of the subparts of the result vector, giving the
|
number of the source subpart that should be stored into it. */
|
number of the source subpart that should be stored into it. */
|
DEF_RTL_EXPR(VEC_SELECT, "vec_select", "ee", RTX_BIN_ARITH)
|
DEF_RTL_EXPR(VEC_SELECT, "vec_select", "ee", RTX_BIN_ARITH)
|
|
|
/* Describes a vector concat operation. Operands 0 and 1 are the source
|
/* Describes a vector concat operation. Operands 0 and 1 are the source
|
vectors, the result is a vector that is as long as operands 0 and 1
|
vectors, the result is a vector that is as long as operands 0 and 1
|
combined and is the concatenation of the two source vectors. */
|
combined and is the concatenation of the two source vectors. */
|
DEF_RTL_EXPR(VEC_CONCAT, "vec_concat", "ee", RTX_BIN_ARITH)
|
DEF_RTL_EXPR(VEC_CONCAT, "vec_concat", "ee", RTX_BIN_ARITH)
|
|
|
/* Describes an operation that converts a small vector into a larger one by
|
/* Describes an operation that converts a small vector into a larger one by
|
duplicating the input values. The output vector mode must have the same
|
duplicating the input values. The output vector mode must have the same
|
submodes as the input vector mode, and the number of output parts must be
|
submodes as the input vector mode, and the number of output parts must be
|
an integer multiple of the number of input parts. */
|
an integer multiple of the number of input parts. */
|
DEF_RTL_EXPR(VEC_DUPLICATE, "vec_duplicate", "e", RTX_UNARY)
|
DEF_RTL_EXPR(VEC_DUPLICATE, "vec_duplicate", "e", RTX_UNARY)
|
|
|
/* Addition with signed saturation */
|
/* Addition with signed saturation */
|
DEF_RTL_EXPR(SS_PLUS, "ss_plus", "ee", RTX_COMM_ARITH)
|
DEF_RTL_EXPR(SS_PLUS, "ss_plus", "ee", RTX_COMM_ARITH)
|
|
|
/* Addition with unsigned saturation */
|
/* Addition with unsigned saturation */
|
DEF_RTL_EXPR(US_PLUS, "us_plus", "ee", RTX_COMM_ARITH)
|
DEF_RTL_EXPR(US_PLUS, "us_plus", "ee", RTX_COMM_ARITH)
|
|
|
/* Operand 0 minus operand 1, with signed saturation. */
|
/* Operand 0 minus operand 1, with signed saturation. */
|
DEF_RTL_EXPR(SS_MINUS, "ss_minus", "ee", RTX_BIN_ARITH)
|
DEF_RTL_EXPR(SS_MINUS, "ss_minus", "ee", RTX_BIN_ARITH)
|
|
|
/* Negation with signed saturation. */
|
/* Negation with signed saturation. */
|
DEF_RTL_EXPR(SS_NEG, "ss_neg", "e", RTX_UNARY)
|
DEF_RTL_EXPR(SS_NEG, "ss_neg", "e", RTX_UNARY)
|
|
|
/* Shift left with signed saturation. */
|
/* Shift left with signed saturation. */
|
DEF_RTL_EXPR(SS_ASHIFT, "ss_ashift", "ee", RTX_BIN_ARITH)
|
DEF_RTL_EXPR(SS_ASHIFT, "ss_ashift", "ee", RTX_BIN_ARITH)
|
|
|
/* Operand 0 minus operand 1, with unsigned saturation. */
|
/* Operand 0 minus operand 1, with unsigned saturation. */
|
DEF_RTL_EXPR(US_MINUS, "us_minus", "ee", RTX_BIN_ARITH)
|
DEF_RTL_EXPR(US_MINUS, "us_minus", "ee", RTX_BIN_ARITH)
|
|
|
/* Signed saturating truncate. */
|
/* Signed saturating truncate. */
|
DEF_RTL_EXPR(SS_TRUNCATE, "ss_truncate", "e", RTX_UNARY)
|
DEF_RTL_EXPR(SS_TRUNCATE, "ss_truncate", "e", RTX_UNARY)
|
|
|
/* Unsigned saturating truncate. */
|
/* Unsigned saturating truncate. */
|
DEF_RTL_EXPR(US_TRUNCATE, "us_truncate", "e", RTX_UNARY)
|
DEF_RTL_EXPR(US_TRUNCATE, "us_truncate", "e", RTX_UNARY)
|
|
|
/* Information about the variable and its location. */
|
/* Information about the variable and its location. */
|
DEF_RTL_EXPR(VAR_LOCATION, "var_location", "te", RTX_EXTRA)
|
DEF_RTL_EXPR(VAR_LOCATION, "var_location", "te", RTX_EXTRA)
|
|
|
/* All expressions from this point forward appear only in machine
|
/* All expressions from this point forward appear only in machine
|
descriptions. */
|
descriptions. */
|
#ifdef GENERATOR_FILE
|
#ifdef GENERATOR_FILE
|
|
|
/* Include a secondary machine-description file at this point. */
|
/* Include a secondary machine-description file at this point. */
|
DEF_RTL_EXPR(INCLUDE, "include", "s", RTX_EXTRA)
|
DEF_RTL_EXPR(INCLUDE, "include", "s", RTX_EXTRA)
|
|
|
/* Pattern-matching operators: */
|
/* Pattern-matching operators: */
|
|
|
/* Use the function named by the second arg (the string)
|
/* Use the function named by the second arg (the string)
|
as a predicate; if matched, store the structure that was matched
|
as a predicate; if matched, store the structure that was matched
|
in the operand table at index specified by the first arg (the integer).
|
in the operand table at index specified by the first arg (the integer).
|
If the second arg is the null string, the structure is just stored.
|
If the second arg is the null string, the structure is just stored.
|
|
|
A third string argument indicates to the register allocator restrictions
|
A third string argument indicates to the register allocator restrictions
|
on where the operand can be allocated.
|
on where the operand can be allocated.
|
|
|
If the target needs no restriction on any instruction this field should
|
If the target needs no restriction on any instruction this field should
|
be the null string.
|
be the null string.
|
|
|
The string is prepended by:
|
The string is prepended by:
|
'=' to indicate the operand is only written to.
|
'=' to indicate the operand is only written to.
|
'+' to indicate the operand is both read and written to.
|
'+' to indicate the operand is both read and written to.
|
|
|
Each character in the string represents an allocable class for an operand.
|
Each character in the string represents an allocable class for an operand.
|
'g' indicates the operand can be any valid class.
|
'g' indicates the operand can be any valid class.
|
'i' indicates the operand can be immediate (in the instruction) data.
|
'i' indicates the operand can be immediate (in the instruction) data.
|
'r' indicates the operand can be in a register.
|
'r' indicates the operand can be in a register.
|
'm' indicates the operand can be in memory.
|
'm' indicates the operand can be in memory.
|
'o' a subset of the 'm' class. Those memory addressing modes that
|
'o' a subset of the 'm' class. Those memory addressing modes that
|
can be offset at compile time (have a constant added to them).
|
can be offset at compile time (have a constant added to them).
|
|
|
Other characters indicate target dependent operand classes and
|
Other characters indicate target dependent operand classes and
|
are described in each target's machine description.
|
are described in each target's machine description.
|
|
|
For instructions with more than one operand, sets of classes can be
|
For instructions with more than one operand, sets of classes can be
|
separated by a comma to indicate the appropriate multi-operand constraints.
|
separated by a comma to indicate the appropriate multi-operand constraints.
|
There must be a 1 to 1 correspondence between these sets of classes in
|
There must be a 1 to 1 correspondence between these sets of classes in
|
all operands for an instruction.
|
all operands for an instruction.
|
*/
|
*/
|
DEF_RTL_EXPR(MATCH_OPERAND, "match_operand", "iss", RTX_MATCH)
|
DEF_RTL_EXPR(MATCH_OPERAND, "match_operand", "iss", RTX_MATCH)
|
|
|
/* Match a SCRATCH or a register. When used to generate rtl, a
|
/* Match a SCRATCH or a register. When used to generate rtl, a
|
SCRATCH is generated. As for MATCH_OPERAND, the mode specifies
|
SCRATCH is generated. As for MATCH_OPERAND, the mode specifies
|
the desired mode and the first argument is the operand number.
|
the desired mode and the first argument is the operand number.
|
The second argument is the constraint. */
|
The second argument is the constraint. */
|
DEF_RTL_EXPR(MATCH_SCRATCH, "match_scratch", "is", RTX_MATCH)
|
DEF_RTL_EXPR(MATCH_SCRATCH, "match_scratch", "is", RTX_MATCH)
|
|
|
/* Apply a predicate, AND match recursively the operands of the rtx.
|
/* Apply a predicate, AND match recursively the operands of the rtx.
|
Operand 0 is the operand-number, as in match_operand.
|
Operand 0 is the operand-number, as in match_operand.
|
Operand 1 is a predicate to apply (as a string, a function name).
|
Operand 1 is a predicate to apply (as a string, a function name).
|
Operand 2 is a vector of expressions, each of which must match
|
Operand 2 is a vector of expressions, each of which must match
|
one subexpression of the rtx this construct is matching. */
|
one subexpression of the rtx this construct is matching. */
|
DEF_RTL_EXPR(MATCH_OPERATOR, "match_operator", "isE", RTX_MATCH)
|
DEF_RTL_EXPR(MATCH_OPERATOR, "match_operator", "isE", RTX_MATCH)
|
|
|
/* Match a PARALLEL of arbitrary length. The predicate is applied
|
/* Match a PARALLEL of arbitrary length. The predicate is applied
|
to the PARALLEL and the initial expressions in the PARALLEL are matched.
|
to the PARALLEL and the initial expressions in the PARALLEL are matched.
|
Operand 0 is the operand-number, as in match_operand.
|
Operand 0 is the operand-number, as in match_operand.
|
Operand 1 is a predicate to apply to the PARALLEL.
|
Operand 1 is a predicate to apply to the PARALLEL.
|
Operand 2 is a vector of expressions, each of which must match the
|
Operand 2 is a vector of expressions, each of which must match the
|
corresponding element in the PARALLEL. */
|
corresponding element in the PARALLEL. */
|
DEF_RTL_EXPR(MATCH_PARALLEL, "match_parallel", "isE", RTX_MATCH)
|
DEF_RTL_EXPR(MATCH_PARALLEL, "match_parallel", "isE", RTX_MATCH)
|
|
|
/* Match only something equal to what is stored in the operand table
|
/* Match only something equal to what is stored in the operand table
|
at the index specified by the argument. Use with MATCH_OPERAND. */
|
at the index specified by the argument. Use with MATCH_OPERAND. */
|
DEF_RTL_EXPR(MATCH_DUP, "match_dup", "i", RTX_MATCH)
|
DEF_RTL_EXPR(MATCH_DUP, "match_dup", "i", RTX_MATCH)
|
|
|
/* Match only something equal to what is stored in the operand table
|
/* Match only something equal to what is stored in the operand table
|
at the index specified by the argument. Use with MATCH_OPERATOR. */
|
at the index specified by the argument. Use with MATCH_OPERATOR. */
|
DEF_RTL_EXPR(MATCH_OP_DUP, "match_op_dup", "iE", RTX_MATCH)
|
DEF_RTL_EXPR(MATCH_OP_DUP, "match_op_dup", "iE", RTX_MATCH)
|
|
|
/* Match only something equal to what is stored in the operand table
|
/* Match only something equal to what is stored in the operand table
|
at the index specified by the argument. Use with MATCH_PARALLEL. */
|
at the index specified by the argument. Use with MATCH_PARALLEL. */
|
DEF_RTL_EXPR(MATCH_PAR_DUP, "match_par_dup", "iE", RTX_MATCH)
|
DEF_RTL_EXPR(MATCH_PAR_DUP, "match_par_dup", "iE", RTX_MATCH)
|
|
|
/* Appears only in define_predicate/define_special_predicate
|
/* Appears only in define_predicate/define_special_predicate
|
expressions. Evaluates true only if the operand has an RTX code
|
expressions. Evaluates true only if the operand has an RTX code
|
from the set given by the argument (a comma-separated list). If the
|
from the set given by the argument (a comma-separated list). If the
|
second argument is present and nonempty, it is a sequence of digits
|
second argument is present and nonempty, it is a sequence of digits
|
and/or letters which indicates the subexpression to test, using the
|
and/or letters which indicates the subexpression to test, using the
|
same syntax as genextract/genrecog's location strings: 0-9 for
|
same syntax as genextract/genrecog's location strings: 0-9 for
|
XEXP (op, n), a-z for XVECEXP (op, 0, n); each character applies to
|
XEXP (op, n), a-z for XVECEXP (op, 0, n); each character applies to
|
the result of the one before it. */
|
the result of the one before it. */
|
DEF_RTL_EXPR(MATCH_CODE, "match_code", "ss", RTX_MATCH)
|
DEF_RTL_EXPR(MATCH_CODE, "match_code", "ss", RTX_MATCH)
|
|
|
/* Appears only in define_predicate/define_special_predicate
|
/* Appears only in define_predicate/define_special_predicate
|
expressions. The argument is a C expression to be injected at this
|
expressions. The argument is a C expression to be injected at this
|
point in the predicate formula. */
|
point in the predicate formula. */
|
DEF_RTL_EXPR(MATCH_TEST, "match_test", "s", RTX_MATCH)
|
DEF_RTL_EXPR(MATCH_TEST, "match_test", "s", RTX_MATCH)
|
|
|
/* Insn (and related) definitions. */
|
/* Insn (and related) definitions. */
|
|
|
/* Definition of the pattern for one kind of instruction.
|
/* Definition of the pattern for one kind of instruction.
|
Operand:
|
Operand:
|
0: names this instruction.
|
0: names this instruction.
|
If the name is the null string, the instruction is in the
|
If the name is the null string, the instruction is in the
|
machine description just to be recognized, and will never be emitted by
|
machine description just to be recognized, and will never be emitted by
|
the tree to rtl expander.
|
the tree to rtl expander.
|
1: is the pattern.
|
1: is the pattern.
|
2: is a string which is a C expression
|
2: is a string which is a C expression
|
giving an additional condition for recognizing this pattern.
|
giving an additional condition for recognizing this pattern.
|
A null string means no extra condition.
|
A null string means no extra condition.
|
3: is the action to execute if this pattern is matched.
|
3: is the action to execute if this pattern is matched.
|
If this assembler code template starts with a * then it is a fragment of
|
If this assembler code template starts with a * then it is a fragment of
|
C code to run to decide on a template to use. Otherwise, it is the
|
C code to run to decide on a template to use. Otherwise, it is the
|
template to use.
|
template to use.
|
4: optionally, a vector of attributes for this insn.
|
4: optionally, a vector of attributes for this insn.
|
*/
|
*/
|
DEF_RTL_EXPR(DEFINE_INSN, "define_insn", "sEsTV", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_INSN, "define_insn", "sEsTV", RTX_EXTRA)
|
|
|
/* Definition of a peephole optimization.
|
/* Definition of a peephole optimization.
|
1st operand: vector of insn patterns to match
|
1st operand: vector of insn patterns to match
|
2nd operand: C expression that must be true
|
2nd operand: C expression that must be true
|
3rd operand: template or C code to produce assembler output.
|
3rd operand: template or C code to produce assembler output.
|
4: optionally, a vector of attributes for this insn.
|
4: optionally, a vector of attributes for this insn.
|
|
|
This form is deprecated; use define_peephole2 instead. */
|
This form is deprecated; use define_peephole2 instead. */
|
DEF_RTL_EXPR(DEFINE_PEEPHOLE, "define_peephole", "EsTV", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_PEEPHOLE, "define_peephole", "EsTV", RTX_EXTRA)
|
|
|
/* Definition of a split operation.
|
/* Definition of a split operation.
|
1st operand: insn pattern to match
|
1st operand: insn pattern to match
|
2nd operand: C expression that must be true
|
2nd operand: C expression that must be true
|
3rd operand: vector of insn patterns to place into a SEQUENCE
|
3rd operand: vector of insn patterns to place into a SEQUENCE
|
4th operand: optionally, some C code to execute before generating the
|
4th operand: optionally, some C code to execute before generating the
|
insns. This might, for example, create some RTX's and store them in
|
insns. This might, for example, create some RTX's and store them in
|
elements of `recog_data.operand' for use by the vector of
|
elements of `recog_data.operand' for use by the vector of
|
insn-patterns.
|
insn-patterns.
|
(`operands' is an alias here for `recog_data.operand'). */
|
(`operands' is an alias here for `recog_data.operand'). */
|
DEF_RTL_EXPR(DEFINE_SPLIT, "define_split", "EsES", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_SPLIT, "define_split", "EsES", RTX_EXTRA)
|
|
|
/* Definition of an insn and associated split.
|
/* Definition of an insn and associated split.
|
This is the concatenation, with a few modifications, of a define_insn
|
This is the concatenation, with a few modifications, of a define_insn
|
and a define_split which share the same pattern.
|
and a define_split which share the same pattern.
|
Operand:
|
Operand:
|
0: names this instruction.
|
0: names this instruction.
|
If the name is the null string, the instruction is in the
|
If the name is the null string, the instruction is in the
|
machine description just to be recognized, and will never be emitted by
|
machine description just to be recognized, and will never be emitted by
|
the tree to rtl expander.
|
the tree to rtl expander.
|
1: is the pattern.
|
1: is the pattern.
|
2: is a string which is a C expression
|
2: is a string which is a C expression
|
giving an additional condition for recognizing this pattern.
|
giving an additional condition for recognizing this pattern.
|
A null string means no extra condition.
|
A null string means no extra condition.
|
3: is the action to execute if this pattern is matched.
|
3: is the action to execute if this pattern is matched.
|
If this assembler code template starts with a * then it is a fragment of
|
If this assembler code template starts with a * then it is a fragment of
|
C code to run to decide on a template to use. Otherwise, it is the
|
C code to run to decide on a template to use. Otherwise, it is the
|
template to use.
|
template to use.
|
4: C expression that must be true for split. This may start with "&&"
|
4: C expression that must be true for split. This may start with "&&"
|
in which case the split condition is the logical and of the insn
|
in which case the split condition is the logical and of the insn
|
condition and what follows the "&&" of this operand.
|
condition and what follows the "&&" of this operand.
|
5: vector of insn patterns to place into a SEQUENCE
|
5: vector of insn patterns to place into a SEQUENCE
|
6: optionally, some C code to execute before generating the
|
6: optionally, some C code to execute before generating the
|
insns. This might, for example, create some RTX's and store them in
|
insns. This might, for example, create some RTX's and store them in
|
elements of `recog_data.operand' for use by the vector of
|
elements of `recog_data.operand' for use by the vector of
|
insn-patterns.
|
insn-patterns.
|
(`operands' is an alias here for `recog_data.operand').
|
(`operands' is an alias here for `recog_data.operand').
|
7: optionally, a vector of attributes for this insn. */
|
7: optionally, a vector of attributes for this insn. */
|
DEF_RTL_EXPR(DEFINE_INSN_AND_SPLIT, "define_insn_and_split", "sEsTsESV", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_INSN_AND_SPLIT, "define_insn_and_split", "sEsTsESV", RTX_EXTRA)
|
|
|
/* Definition of an RTL peephole operation.
|
/* Definition of an RTL peephole operation.
|
Follows the same arguments as define_split. */
|
Follows the same arguments as define_split. */
|
DEF_RTL_EXPR(DEFINE_PEEPHOLE2, "define_peephole2", "EsES", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_PEEPHOLE2, "define_peephole2", "EsES", RTX_EXTRA)
|
|
|
/* Define how to generate multiple insns for a standard insn name.
|
/* Define how to generate multiple insns for a standard insn name.
|
1st operand: the insn name.
|
1st operand: the insn name.
|
2nd operand: vector of insn-patterns.
|
2nd operand: vector of insn-patterns.
|
Use match_operand to substitute an element of `recog_data.operand'.
|
Use match_operand to substitute an element of `recog_data.operand'.
|
3rd operand: C expression that must be true for this to be available.
|
3rd operand: C expression that must be true for this to be available.
|
This may not test any operands.
|
This may not test any operands.
|
4th operand: Extra C code to execute before generating the insns.
|
4th operand: Extra C code to execute before generating the insns.
|
This might, for example, create some RTX's and store them in
|
This might, for example, create some RTX's and store them in
|
elements of `recog_data.operand' for use by the vector of
|
elements of `recog_data.operand' for use by the vector of
|
insn-patterns.
|
insn-patterns.
|
(`operands' is an alias here for `recog_data.operand'). */
|
(`operands' is an alias here for `recog_data.operand'). */
|
DEF_RTL_EXPR(DEFINE_EXPAND, "define_expand", "sEss", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_EXPAND, "define_expand", "sEss", RTX_EXTRA)
|
|
|
/* Define a requirement for delay slots.
|
/* Define a requirement for delay slots.
|
1st operand: Condition involving insn attributes that, if true,
|
1st operand: Condition involving insn attributes that, if true,
|
indicates that the insn requires the number of delay slots
|
indicates that the insn requires the number of delay slots
|
shown.
|
shown.
|
2nd operand: Vector whose length is the three times the number of delay
|
2nd operand: Vector whose length is the three times the number of delay
|
slots required.
|
slots required.
|
Each entry gives three conditions, each involving attributes.
|
Each entry gives three conditions, each involving attributes.
|
The first must be true for an insn to occupy that delay slot
|
The first must be true for an insn to occupy that delay slot
|
location. The second is true for all insns that can be
|
location. The second is true for all insns that can be
|
annulled if the branch is true and the third is true for all
|
annulled if the branch is true and the third is true for all
|
insns that can be annulled if the branch is false.
|
insns that can be annulled if the branch is false.
|
|
|
Multiple DEFINE_DELAYs may be present. They indicate differing
|
Multiple DEFINE_DELAYs may be present. They indicate differing
|
requirements for delay slots. */
|
requirements for delay slots. */
|
DEF_RTL_EXPR(DEFINE_DELAY, "define_delay", "eE", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_DELAY, "define_delay", "eE", RTX_EXTRA)
|
|
|
/* Define attribute computation for `asm' instructions. */
|
/* Define attribute computation for `asm' instructions. */
|
DEF_RTL_EXPR(DEFINE_ASM_ATTRIBUTES, "define_asm_attributes", "V", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_ASM_ATTRIBUTES, "define_asm_attributes", "V", RTX_EXTRA)
|
|
|
/* Definition of a conditional execution meta operation. Automatically
|
/* Definition of a conditional execution meta operation. Automatically
|
generates new instances of DEFINE_INSN, selected by having attribute
|
generates new instances of DEFINE_INSN, selected by having attribute
|
"predicable" true. The new pattern will contain a COND_EXEC and the
|
"predicable" true. The new pattern will contain a COND_EXEC and the
|
predicate at top-level.
|
predicate at top-level.
|
|
|
Operand:
|
Operand:
|
0: The predicate pattern. The top-level form should match a
|
0: The predicate pattern. The top-level form should match a
|
relational operator. Operands should have only one alternative.
|
relational operator. Operands should have only one alternative.
|
1: A C expression giving an additional condition for recognizing
|
1: A C expression giving an additional condition for recognizing
|
the generated pattern.
|
the generated pattern.
|
2: A template or C code to produce assembler output. */
|
2: A template or C code to produce assembler output. */
|
DEF_RTL_EXPR(DEFINE_COND_EXEC, "define_cond_exec", "Ess", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_COND_EXEC, "define_cond_exec", "Ess", RTX_EXTRA)
|
|
|
/* Definition of an operand predicate. The difference between
|
/* Definition of an operand predicate. The difference between
|
DEFINE_PREDICATE and DEFINE_SPECIAL_PREDICATE is that genrecog will
|
DEFINE_PREDICATE and DEFINE_SPECIAL_PREDICATE is that genrecog will
|
not warn about a match_operand with no mode if it has a predicate
|
not warn about a match_operand with no mode if it has a predicate
|
defined with DEFINE_SPECIAL_PREDICATE.
|
defined with DEFINE_SPECIAL_PREDICATE.
|
|
|
Operand:
|
Operand:
|
0: The name of the predicate.
|
0: The name of the predicate.
|
1: A boolean expression which computes whether or not the predicate
|
1: A boolean expression which computes whether or not the predicate
|
matches. This expression can use IOR, AND, NOT, MATCH_OPERAND,
|
matches. This expression can use IOR, AND, NOT, MATCH_OPERAND,
|
MATCH_CODE, and MATCH_TEST. It must be specific enough that genrecog
|
MATCH_CODE, and MATCH_TEST. It must be specific enough that genrecog
|
can calculate the set of RTX codes that can possibly match.
|
can calculate the set of RTX codes that can possibly match.
|
2: A C function body which must return true for the predicate to match.
|
2: A C function body which must return true for the predicate to match.
|
Optional. Use this when the test is too complicated to fit into a
|
Optional. Use this when the test is too complicated to fit into a
|
match_test expression. */
|
match_test expression. */
|
DEF_RTL_EXPR(DEFINE_PREDICATE, "define_predicate", "ses", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_PREDICATE, "define_predicate", "ses", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_SPECIAL_PREDICATE, "define_special_predicate", "ses", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_SPECIAL_PREDICATE, "define_special_predicate", "ses", RTX_EXTRA)
|
|
|
/* Definition of a register operand constraint. This simply maps the
|
/* Definition of a register operand constraint. This simply maps the
|
constraint string to a register class.
|
constraint string to a register class.
|
|
|
Operand:
|
Operand:
|
0: The name of the constraint (often, but not always, a single letter).
|
0: The name of the constraint (often, but not always, a single letter).
|
1: A C expression which evaluates to the appropriate register class for
|
1: A C expression which evaluates to the appropriate register class for
|
this constraint. If this is not just a constant, it should look only
|
this constraint. If this is not just a constant, it should look only
|
at -m switches and the like.
|
at -m switches and the like.
|
2: A docstring for this constraint, in Texinfo syntax; not currently
|
2: A docstring for this constraint, in Texinfo syntax; not currently
|
used, in future will be incorporated into the manual's list of
|
used, in future will be incorporated into the manual's list of
|
machine-specific operand constraints. */
|
machine-specific operand constraints. */
|
DEF_RTL_EXPR(DEFINE_REGISTER_CONSTRAINT, "define_register_constraint", "sss", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_REGISTER_CONSTRAINT, "define_register_constraint", "sss", RTX_EXTRA)
|
|
|
/* Definition of a non-register operand constraint. These look at the
|
/* Definition of a non-register operand constraint. These look at the
|
operand and decide whether it fits the constraint.
|
operand and decide whether it fits the constraint.
|
|
|
DEFINE_CONSTRAINT gets no special treatment if it fails to match.
|
DEFINE_CONSTRAINT gets no special treatment if it fails to match.
|
It is appropriate for constant-only constraints, and most others.
|
It is appropriate for constant-only constraints, and most others.
|
|
|
DEFINE_MEMORY_CONSTRAINT tells reload that this constraint can be made
|
DEFINE_MEMORY_CONSTRAINT tells reload that this constraint can be made
|
to match, if it doesn't already, by converting the operand to the form
|
to match, if it doesn't already, by converting the operand to the form
|
(mem (reg X)) where X is a base register. It is suitable for constraints
|
(mem (reg X)) where X is a base register. It is suitable for constraints
|
that describe a subset of all memory references.
|
that describe a subset of all memory references.
|
|
|
DEFINE_ADDRESS_CONSTRAINT tells reload that this constraint can be made
|
DEFINE_ADDRESS_CONSTRAINT tells reload that this constraint can be made
|
to match, if it doesn't already, by converting the operand to the form
|
to match, if it doesn't already, by converting the operand to the form
|
(reg X) where X is a base register. It is suitable for constraints that
|
(reg X) where X is a base register. It is suitable for constraints that
|
describe a subset of all address references.
|
describe a subset of all address references.
|
|
|
When in doubt, use plain DEFINE_CONSTRAINT.
|
When in doubt, use plain DEFINE_CONSTRAINT.
|
|
|
Operand:
|
Operand:
|
0: The name of the constraint (often, but not always, a single letter).
|
0: The name of the constraint (often, but not always, a single letter).
|
1: A docstring for this constraint, in Texinfo syntax; not currently
|
1: A docstring for this constraint, in Texinfo syntax; not currently
|
used, in future will be incorporated into the manual's list of
|
used, in future will be incorporated into the manual's list of
|
machine-specific operand constraints.
|
machine-specific operand constraints.
|
2: A boolean expression which computes whether or not the constraint
|
2: A boolean expression which computes whether or not the constraint
|
matches. It should follow the same rules as a define_predicate
|
matches. It should follow the same rules as a define_predicate
|
expression, including the bit about specifying the set of RTX codes
|
expression, including the bit about specifying the set of RTX codes
|
that could possibly match. MATCH_TEST subexpressions may make use of
|
that could possibly match. MATCH_TEST subexpressions may make use of
|
these variables:
|
these variables:
|
`op' - the RTL object defining the operand.
|
`op' - the RTL object defining the operand.
|
`mode' - the mode of `op'.
|
`mode' - the mode of `op'.
|
`ival' - INTVAL(op), if op is a CONST_INT.
|
`ival' - INTVAL(op), if op is a CONST_INT.
|
`hval' - CONST_DOUBLE_HIGH(op), if op is an integer CONST_DOUBLE.
|
`hval' - CONST_DOUBLE_HIGH(op), if op is an integer CONST_DOUBLE.
|
`lval' - CONST_DOUBLE_LOW(op), if op is an integer CONST_DOUBLE.
|
`lval' - CONST_DOUBLE_LOW(op), if op is an integer CONST_DOUBLE.
|
`rval' - CONST_DOUBLE_REAL_VALUE(op), if op is a floating-point
|
`rval' - CONST_DOUBLE_REAL_VALUE(op), if op is a floating-point
|
CONST_DOUBLE.
|
CONST_DOUBLE.
|
Do not use ival/hval/lval/rval if op is not the appropriate kind of
|
Do not use ival/hval/lval/rval if op is not the appropriate kind of
|
RTL object. */
|
RTL object. */
|
DEF_RTL_EXPR(DEFINE_CONSTRAINT, "define_constraint", "sse", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_CONSTRAINT, "define_constraint", "sse", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_MEMORY_CONSTRAINT, "define_memory_constraint", "sse", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_MEMORY_CONSTRAINT, "define_memory_constraint", "sse", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_ADDRESS_CONSTRAINT, "define_address_constraint", "sse", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_ADDRESS_CONSTRAINT, "define_address_constraint", "sse", RTX_EXTRA)
|
|
|
|
|
/* Constructions for CPU pipeline description described by NDFAs. */
|
/* Constructions for CPU pipeline description described by NDFAs. */
|
|
|
/* (define_cpu_unit string [string]) describes cpu functional
|
/* (define_cpu_unit string [string]) describes cpu functional
|
units (separated by comma).
|
units (separated by comma).
|
|
|
1st operand: Names of cpu functional units.
|
1st operand: Names of cpu functional units.
|
2nd operand: Name of automaton (see comments for DEFINE_AUTOMATON).
|
2nd operand: Name of automaton (see comments for DEFINE_AUTOMATON).
|
|
|
All define_reservations, define_cpu_units, and
|
All define_reservations, define_cpu_units, and
|
define_query_cpu_units should have unique names which may not be
|
define_query_cpu_units should have unique names which may not be
|
"nothing". */
|
"nothing". */
|
DEF_RTL_EXPR(DEFINE_CPU_UNIT, "define_cpu_unit", "sS", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_CPU_UNIT, "define_cpu_unit", "sS", RTX_EXTRA)
|
|
|
/* (define_query_cpu_unit string [string]) describes cpu functional
|
/* (define_query_cpu_unit string [string]) describes cpu functional
|
units analogously to define_cpu_unit. The reservation of such
|
units analogously to define_cpu_unit. The reservation of such
|
units can be queried for automaton state. */
|
units can be queried for automaton state. */
|
DEF_RTL_EXPR(DEFINE_QUERY_CPU_UNIT, "define_query_cpu_unit", "sS", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_QUERY_CPU_UNIT, "define_query_cpu_unit", "sS", RTX_EXTRA)
|
|
|
/* (exclusion_set string string) means that each CPU functional unit
|
/* (exclusion_set string string) means that each CPU functional unit
|
in the first string can not be reserved simultaneously with any
|
in the first string can not be reserved simultaneously with any
|
unit whose name is in the second string and vise versa. CPU units
|
unit whose name is in the second string and vise versa. CPU units
|
in the string are separated by commas. For example, it is useful
|
in the string are separated by commas. For example, it is useful
|
for description CPU with fully pipelined floating point functional
|
for description CPU with fully pipelined floating point functional
|
unit which can execute simultaneously only single floating point
|
unit which can execute simultaneously only single floating point
|
insns or only double floating point insns. All CPU functional
|
insns or only double floating point insns. All CPU functional
|
units in a set should belong to the same automaton. */
|
units in a set should belong to the same automaton. */
|
DEF_RTL_EXPR(EXCLUSION_SET, "exclusion_set", "ss", RTX_EXTRA)
|
DEF_RTL_EXPR(EXCLUSION_SET, "exclusion_set", "ss", RTX_EXTRA)
|
|
|
/* (presence_set string string) means that each CPU functional unit in
|
/* (presence_set string string) means that each CPU functional unit in
|
the first string can not be reserved unless at least one of pattern
|
the first string can not be reserved unless at least one of pattern
|
of units whose names are in the second string is reserved. This is
|
of units whose names are in the second string is reserved. This is
|
an asymmetric relation. CPU units or unit patterns in the strings
|
an asymmetric relation. CPU units or unit patterns in the strings
|
are separated by commas. Pattern is one unit name or unit names
|
are separated by commas. Pattern is one unit name or unit names
|
separated by white-spaces.
|
separated by white-spaces.
|
|
|
For example, it is useful for description that slot1 is reserved
|
For example, it is useful for description that slot1 is reserved
|
after slot0 reservation for a VLIW processor. We could describe it
|
after slot0 reservation for a VLIW processor. We could describe it
|
by the following construction
|
by the following construction
|
|
|
(presence_set "slot1" "slot0")
|
(presence_set "slot1" "slot0")
|
|
|
Or slot1 is reserved only after slot0 and unit b0 reservation. In
|
Or slot1 is reserved only after slot0 and unit b0 reservation. In
|
this case we could write
|
this case we could write
|
|
|
(presence_set "slot1" "slot0 b0")
|
(presence_set "slot1" "slot0 b0")
|
|
|
All CPU functional units in a set should belong to the same
|
All CPU functional units in a set should belong to the same
|
automaton. */
|
automaton. */
|
DEF_RTL_EXPR(PRESENCE_SET, "presence_set", "ss", RTX_EXTRA)
|
DEF_RTL_EXPR(PRESENCE_SET, "presence_set", "ss", RTX_EXTRA)
|
|
|
/* (final_presence_set string string) is analogous to `presence_set'.
|
/* (final_presence_set string string) is analogous to `presence_set'.
|
The difference between them is when checking is done. When an
|
The difference between them is when checking is done. When an
|
instruction is issued in given automaton state reflecting all
|
instruction is issued in given automaton state reflecting all
|
current and planned unit reservations, the automaton state is
|
current and planned unit reservations, the automaton state is
|
changed. The first state is a source state, the second one is a
|
changed. The first state is a source state, the second one is a
|
result state. Checking for `presence_set' is done on the source
|
result state. Checking for `presence_set' is done on the source
|
state reservation, checking for `final_presence_set' is done on the
|
state reservation, checking for `final_presence_set' is done on the
|
result reservation. This construction is useful to describe a
|
result reservation. This construction is useful to describe a
|
reservation which is actually two subsequent reservations. For
|
reservation which is actually two subsequent reservations. For
|
example, if we use
|
example, if we use
|
|
|
(presence_set "slot1" "slot0")
|
(presence_set "slot1" "slot0")
|
|
|
the following insn will be never issued (because slot1 requires
|
the following insn will be never issued (because slot1 requires
|
slot0 which is absent in the source state).
|
slot0 which is absent in the source state).
|
|
|
(define_reservation "insn_and_nop" "slot0 + slot1")
|
(define_reservation "insn_and_nop" "slot0 + slot1")
|
|
|
but it can be issued if we use analogous `final_presence_set'. */
|
but it can be issued if we use analogous `final_presence_set'. */
|
DEF_RTL_EXPR(FINAL_PRESENCE_SET, "final_presence_set", "ss", RTX_EXTRA)
|
DEF_RTL_EXPR(FINAL_PRESENCE_SET, "final_presence_set", "ss", RTX_EXTRA)
|
|
|
/* (absence_set string string) means that each CPU functional unit in
|
/* (absence_set string string) means that each CPU functional unit in
|
the first string can be reserved only if each pattern of units
|
the first string can be reserved only if each pattern of units
|
whose names are in the second string is not reserved. This is an
|
whose names are in the second string is not reserved. This is an
|
asymmetric relation (actually exclusion set is analogous to this
|
asymmetric relation (actually exclusion set is analogous to this
|
one but it is symmetric). CPU units or unit patterns in the string
|
one but it is symmetric). CPU units or unit patterns in the string
|
are separated by commas. Pattern is one unit name or unit names
|
are separated by commas. Pattern is one unit name or unit names
|
separated by white-spaces.
|
separated by white-spaces.
|
|
|
For example, it is useful for description that slot0 can not be
|
For example, it is useful for description that slot0 can not be
|
reserved after slot1 or slot2 reservation for a VLIW processor. We
|
reserved after slot1 or slot2 reservation for a VLIW processor. We
|
could describe it by the following construction
|
could describe it by the following construction
|
|
|
(absence_set "slot2" "slot0, slot1")
|
(absence_set "slot2" "slot0, slot1")
|
|
|
Or slot2 can not be reserved if slot0 and unit b0 are reserved or
|
Or slot2 can not be reserved if slot0 and unit b0 are reserved or
|
slot1 and unit b1 are reserved . In this case we could write
|
slot1 and unit b1 are reserved . In this case we could write
|
|
|
(absence_set "slot2" "slot0 b0, slot1 b1")
|
(absence_set "slot2" "slot0 b0, slot1 b1")
|
|
|
All CPU functional units in a set should to belong the same
|
All CPU functional units in a set should to belong the same
|
automaton. */
|
automaton. */
|
DEF_RTL_EXPR(ABSENCE_SET, "absence_set", "ss", RTX_EXTRA)
|
DEF_RTL_EXPR(ABSENCE_SET, "absence_set", "ss", RTX_EXTRA)
|
|
|
/* (final_absence_set string string) is analogous to `absence_set' but
|
/* (final_absence_set string string) is analogous to `absence_set' but
|
checking is done on the result (state) reservation. See comments
|
checking is done on the result (state) reservation. See comments
|
for `final_presence_set'. */
|
for `final_presence_set'. */
|
DEF_RTL_EXPR(FINAL_ABSENCE_SET, "final_absence_set", "ss", RTX_EXTRA)
|
DEF_RTL_EXPR(FINAL_ABSENCE_SET, "final_absence_set", "ss", RTX_EXTRA)
|
|
|
/* (define_bypass number out_insn_names in_insn_names) names bypass
|
/* (define_bypass number out_insn_names in_insn_names) names bypass
|
with given latency (the first number) from insns given by the first
|
with given latency (the first number) from insns given by the first
|
string (see define_insn_reservation) into insns given by the second
|
string (see define_insn_reservation) into insns given by the second
|
string. Insn names in the strings are separated by commas. The
|
string. Insn names in the strings are separated by commas. The
|
third operand is optional name of function which is additional
|
third operand is optional name of function which is additional
|
guard for the bypass. The function will get the two insns as
|
guard for the bypass. The function will get the two insns as
|
parameters. If the function returns zero the bypass will be
|
parameters. If the function returns zero the bypass will be
|
ignored for this case. Additional guard is necessary to recognize
|
ignored for this case. Additional guard is necessary to recognize
|
complicated bypasses, e.g. when consumer is load address. */
|
complicated bypasses, e.g. when consumer is load address. */
|
DEF_RTL_EXPR(DEFINE_BYPASS, "define_bypass", "issS", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_BYPASS, "define_bypass", "issS", RTX_EXTRA)
|
|
|
/* (define_automaton string) describes names of automata generated and
|
/* (define_automaton string) describes names of automata generated and
|
used for pipeline hazards recognition. The names are separated by
|
used for pipeline hazards recognition. The names are separated by
|
comma. Actually it is possibly to generate the single automaton
|
comma. Actually it is possibly to generate the single automaton
|
but unfortunately it can be very large. If we use more one
|
but unfortunately it can be very large. If we use more one
|
automata, the summary size of the automata usually is less than the
|
automata, the summary size of the automata usually is less than the
|
single one. The automaton name is used in define_cpu_unit and
|
single one. The automaton name is used in define_cpu_unit and
|
define_query_cpu_unit. All automata should have unique names. */
|
define_query_cpu_unit. All automata should have unique names. */
|
DEF_RTL_EXPR(DEFINE_AUTOMATON, "define_automaton", "s", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_AUTOMATON, "define_automaton", "s", RTX_EXTRA)
|
|
|
/* (automata_option string) describes option for generation of
|
/* (automata_option string) describes option for generation of
|
automata. Currently there are the following options:
|
automata. Currently there are the following options:
|
|
|
o "no-minimization" which makes no minimization of automata. This
|
o "no-minimization" which makes no minimization of automata. This
|
is only worth to do when we are debugging the description and
|
is only worth to do when we are debugging the description and
|
need to look more accurately at reservations of states.
|
need to look more accurately at reservations of states.
|
|
|
o "time" which means printing additional time statistics about
|
o "time" which means printing additional time statistics about
|
generation of automata.
|
generation of automata.
|
|
|
o "v" which means generation of file describing the result
|
o "v" which means generation of file describing the result
|
automata. The file has suffix `.dfa' and can be used for the
|
automata. The file has suffix `.dfa' and can be used for the
|
description verification and debugging.
|
description verification and debugging.
|
|
|
o "w" which means generation of warning instead of error for
|
o "w" which means generation of warning instead of error for
|
non-critical errors.
|
non-critical errors.
|
|
|
o "ndfa" which makes nondeterministic finite state automata.
|
o "ndfa" which makes nondeterministic finite state automata.
|
|
|
o "progress" which means output of a progress bar showing how many
|
o "progress" which means output of a progress bar showing how many
|
states were generated so far for automaton being processed. */
|
states were generated so far for automaton being processed. */
|
DEF_RTL_EXPR(AUTOMATA_OPTION, "automata_option", "s", RTX_EXTRA)
|
DEF_RTL_EXPR(AUTOMATA_OPTION, "automata_option", "s", RTX_EXTRA)
|
|
|
/* (define_reservation string string) names reservation (the first
|
/* (define_reservation string string) names reservation (the first
|
string) of cpu functional units (the 2nd string). Sometimes unit
|
string) of cpu functional units (the 2nd string). Sometimes unit
|
reservations for different insns contain common parts. In such
|
reservations for different insns contain common parts. In such
|
case, you can describe common part and use its name (the 1st
|
case, you can describe common part and use its name (the 1st
|
parameter) in regular expression in define_insn_reservation. All
|
parameter) in regular expression in define_insn_reservation. All
|
define_reservations, define_cpu_units, and define_query_cpu_units
|
define_reservations, define_cpu_units, and define_query_cpu_units
|
should have unique names which may not be "nothing". */
|
should have unique names which may not be "nothing". */
|
DEF_RTL_EXPR(DEFINE_RESERVATION, "define_reservation", "ss", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_RESERVATION, "define_reservation", "ss", RTX_EXTRA)
|
|
|
/* (define_insn_reservation name default_latency condition regexpr)
|
/* (define_insn_reservation name default_latency condition regexpr)
|
describes reservation of cpu functional units (the 3nd operand) for
|
describes reservation of cpu functional units (the 3nd operand) for
|
instruction which is selected by the condition (the 2nd parameter).
|
instruction which is selected by the condition (the 2nd parameter).
|
The first parameter is used for output of debugging information.
|
The first parameter is used for output of debugging information.
|
The reservations are described by a regular expression according
|
The reservations are described by a regular expression according
|
the following syntax:
|
the following syntax:
|
|
|
regexp = regexp "," oneof
|
regexp = regexp "," oneof
|
| oneof
|
| oneof
|
|
|
oneof = oneof "|" allof
|
oneof = oneof "|" allof
|
| allof
|
| allof
|
|
|
allof = allof "+" repeat
|
allof = allof "+" repeat
|
| repeat
|
| repeat
|
|
|
repeat = element "*" number
|
repeat = element "*" number
|
| element
|
| element
|
|
|
element = cpu_function_unit_name
|
element = cpu_function_unit_name
|
| reservation_name
|
| reservation_name
|
| result_name
|
| result_name
|
| "nothing"
|
| "nothing"
|
| "(" regexp ")"
|
| "(" regexp ")"
|
|
|
1. "," is used for describing start of the next cycle in
|
1. "," is used for describing start of the next cycle in
|
reservation.
|
reservation.
|
|
|
2. "|" is used for describing the reservation described by the
|
2. "|" is used for describing the reservation described by the
|
first regular expression *or* the reservation described by the
|
first regular expression *or* the reservation described by the
|
second regular expression *or* etc.
|
second regular expression *or* etc.
|
|
|
3. "+" is used for describing the reservation described by the
|
3. "+" is used for describing the reservation described by the
|
first regular expression *and* the reservation described by the
|
first regular expression *and* the reservation described by the
|
second regular expression *and* etc.
|
second regular expression *and* etc.
|
|
|
4. "*" is used for convenience and simply means sequence in
|
4. "*" is used for convenience and simply means sequence in
|
which the regular expression are repeated NUMBER times with
|
which the regular expression are repeated NUMBER times with
|
cycle advancing (see ",").
|
cycle advancing (see ",").
|
|
|
5. cpu functional unit name which means its reservation.
|
5. cpu functional unit name which means its reservation.
|
|
|
6. reservation name -- see define_reservation.
|
6. reservation name -- see define_reservation.
|
|
|
7. string "nothing" means no units reservation. */
|
7. string "nothing" means no units reservation. */
|
|
|
DEF_RTL_EXPR(DEFINE_INSN_RESERVATION, "define_insn_reservation", "sies", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_INSN_RESERVATION, "define_insn_reservation", "sies", RTX_EXTRA)
|
|
|
/* Expressions used for insn attributes. */
|
/* Expressions used for insn attributes. */
|
|
|
/* Definition of an insn attribute.
|
/* Definition of an insn attribute.
|
1st operand: name of the attribute
|
1st operand: name of the attribute
|
2nd operand: comma-separated list of possible attribute values
|
2nd operand: comma-separated list of possible attribute values
|
3rd operand: expression for the default value of the attribute. */
|
3rd operand: expression for the default value of the attribute. */
|
DEF_RTL_EXPR(DEFINE_ATTR, "define_attr", "sse", RTX_EXTRA)
|
DEF_RTL_EXPR(DEFINE_ATTR, "define_attr", "sse", RTX_EXTRA)
|
|
|
/* Marker for the name of an attribute. */
|
/* Marker for the name of an attribute. */
|
DEF_RTL_EXPR(ATTR, "attr", "s", RTX_EXTRA)
|
DEF_RTL_EXPR(ATTR, "attr", "s", RTX_EXTRA)
|
|
|
/* For use in the last (optional) operand of DEFINE_INSN or DEFINE_PEEPHOLE and
|
/* For use in the last (optional) operand of DEFINE_INSN or DEFINE_PEEPHOLE and
|
in DEFINE_ASM_INSN to specify an attribute to assign to insns matching that
|
in DEFINE_ASM_INSN to specify an attribute to assign to insns matching that
|
pattern.
|
pattern.
|
|
|
(set_attr "name" "value") is equivalent to
|
(set_attr "name" "value") is equivalent to
|
(set (attr "name") (const_string "value")) */
|
(set (attr "name") (const_string "value")) */
|
DEF_RTL_EXPR(SET_ATTR, "set_attr", "ss", RTX_EXTRA)
|
DEF_RTL_EXPR(SET_ATTR, "set_attr", "ss", RTX_EXTRA)
|
|
|
/* In the last operand of DEFINE_INSN and DEFINE_PEEPHOLE, this can be used to
|
/* In the last operand of DEFINE_INSN and DEFINE_PEEPHOLE, this can be used to
|
specify that attribute values are to be assigned according to the
|
specify that attribute values are to be assigned according to the
|
alternative matched.
|
alternative matched.
|
|
|
The following three expressions are equivalent:
|
The following three expressions are equivalent:
|
|
|
(set (attr "att") (cond [(eq_attrq "alternative" "1") (const_string "a1")
|
(set (attr "att") (cond [(eq_attrq "alternative" "1") (const_string "a1")
|
(eq_attrq "alternative" "2") (const_string "a2")]
|
(eq_attrq "alternative" "2") (const_string "a2")]
|
(const_string "a3")))
|
(const_string "a3")))
|
(set_attr_alternative "att" [(const_string "a1") (const_string "a2")
|
(set_attr_alternative "att" [(const_string "a1") (const_string "a2")
|
(const_string "a3")])
|
(const_string "a3")])
|
(set_attr "att" "a1,a2,a3")
|
(set_attr "att" "a1,a2,a3")
|
*/
|
*/
|
DEF_RTL_EXPR(SET_ATTR_ALTERNATIVE, "set_attr_alternative", "sE", RTX_EXTRA)
|
DEF_RTL_EXPR(SET_ATTR_ALTERNATIVE, "set_attr_alternative", "sE", RTX_EXTRA)
|
|
|
/* A conditional expression true if the value of the specified attribute of
|
/* A conditional expression true if the value of the specified attribute of
|
the current insn equals the specified value. The first operand is the
|
the current insn equals the specified value. The first operand is the
|
attribute name and the second is the comparison value. */
|
attribute name and the second is the comparison value. */
|
DEF_RTL_EXPR(EQ_ATTR, "eq_attr", "ss", RTX_EXTRA)
|
DEF_RTL_EXPR(EQ_ATTR, "eq_attr", "ss", RTX_EXTRA)
|
|
|
/* A special case of the above representing a set of alternatives. The first
|
/* A special case of the above representing a set of alternatives. The first
|
operand is bitmap of the set, the second one is the default value. */
|
operand is bitmap of the set, the second one is the default value. */
|
DEF_RTL_EXPR(EQ_ATTR_ALT, "eq_attr_alt", "ii", RTX_EXTRA)
|
DEF_RTL_EXPR(EQ_ATTR_ALT, "eq_attr_alt", "ii", RTX_EXTRA)
|
|
|
/* A conditional expression which is true if the specified flag is
|
/* A conditional expression which is true if the specified flag is
|
true for the insn being scheduled in reorg.
|
true for the insn being scheduled in reorg.
|
|
|
genattr.c defines the following flags which can be tested by
|
genattr.c defines the following flags which can be tested by
|
(attr_flag "foo") expressions in eligible_for_delay.
|
(attr_flag "foo") expressions in eligible_for_delay.
|
|
|
forward, backward, very_likely, likely, very_unlikely, and unlikely. */
|
forward, backward, very_likely, likely, very_unlikely, and unlikely. */
|
|
|
DEF_RTL_EXPR (ATTR_FLAG, "attr_flag", "s", RTX_EXTRA)
|
DEF_RTL_EXPR (ATTR_FLAG, "attr_flag", "s", RTX_EXTRA)
|
|
|
/* General conditional. The first operand is a vector composed of pairs of
|
/* General conditional. The first operand is a vector composed of pairs of
|
expressions. The first element of each pair is evaluated, in turn.
|
expressions. The first element of each pair is evaluated, in turn.
|
The value of the conditional is the second expression of the first pair
|
The value of the conditional is the second expression of the first pair
|
whose first expression evaluates nonzero. If none of the expressions is
|
whose first expression evaluates nonzero. If none of the expressions is
|
true, the second operand will be used as the value of the conditional. */
|
true, the second operand will be used as the value of the conditional. */
|
DEF_RTL_EXPR(COND, "cond", "Ee", RTX_EXTRA)
|
DEF_RTL_EXPR(COND, "cond", "Ee", RTX_EXTRA)
|
|
|
#endif /* GENERATOR_FILE */
|
#endif /* GENERATOR_FILE */
|
|
|
/*
|
/*
|
Local variables:
|
Local variables:
|
mode:c
|
mode:c
|
End:
|
End:
|
*/
|
*/
|
|
|
