/* cuc.h -- OpenRISC Custom Unit Compiler, main header file
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/* cuc.h -- OpenRISC Custom Unit Compiler, main header file
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Copyright (C) 2002 Marko Mlinar, markom@opencores.org
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Copyright (C) 2002 Marko Mlinar, markom@opencores.org
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Copyright (C) 2008 Embecosm Limited
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Copyright (C) 2008 Embecosm Limited
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Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
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Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
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This file is part of Or1ksim, the OpenRISC 1000 Architectural Simulator.
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This file is part of Or1ksim, the OpenRISC 1000 Architectural Simulator.
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This program is free software; you can redistribute it and/or modify it
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the Free
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under the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at your option)
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Software Foundation; either version 3 of the License, or (at your option)
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any later version.
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any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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more details.
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You should have received a copy of the GNU General Public License along
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You should have received a copy of the GNU General Public License along
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with this program. If not, see <http://www.gnu.org/licenses/>. */
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with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* This program is commented throughout in a fashion suitable for processing
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/* This program is commented throughout in a fashion suitable for processing
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with Doxygen. */
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with Doxygen. */
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#ifndef CUC__H
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#ifndef CUC__H
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#define CUC__H
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#define CUC__H
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/* Package includes */
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/* Package includes */
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#include "abstract.h"
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#include "abstract.h"
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/* Maximum number of instructions per function */
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/* Maximum number of instructions per function */
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#define MAX_INSNS 0x10000
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#define MAX_INSNS 0x10000
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#define MAX_BB 0x1000
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#define MAX_BB 0x1000
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#define MAX_REGS 34
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#define MAX_REGS 34
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#define FLAG_REG (MAX_REGS - 2)
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#define FLAG_REG (MAX_REGS - 2)
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#define LRBB_REG (MAX_REGS - 1)
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#define LRBB_REG (MAX_REGS - 1)
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#define CUC_MAX_STACK 0x1000 /* if more, not converted */
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#define CUC_MAX_STACK 0x1000 /* if more, not converted */
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#define MAX_PREROLL 32
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#define MAX_PREROLL 32
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#define MAX_UNROLL 32
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#define MAX_UNROLL 32
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#define IT_BRANCH 0x0001 /* Branch instruction */
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#define IT_BRANCH 0x0001 /* Branch instruction */
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#define IT_INDELAY 0x0002 /* Instruction is in delay slot */
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#define IT_INDELAY 0x0002 /* Instruction is in delay slot */
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#define IT_BBSTART 0x0004 /* BB start marker */
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#define IT_BBSTART 0x0004 /* BB start marker */
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#define IT_BBEND 0x0008 /* BB end marker */
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#define IT_BBEND 0x0008 /* BB end marker */
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#define IT_OUTPUT 0x0010 /* this instruction holds final value of the register */
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#define IT_OUTPUT 0x0010 /* this instruction holds final value of the register */
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#define IT_SIGNED 0x0020 /* Instruction is signed */
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#define IT_SIGNED 0x0020 /* Instruction is signed */
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#define IT_MEMORY 0x0040 /* Instruction does memory access */
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#define IT_MEMORY 0x0040 /* Instruction does memory access */
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#define IT_UNUSED 0x0080 /* dead instruction marker */
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#define IT_UNUSED 0x0080 /* dead instruction marker */
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#define IT_FLAG1 0x0100 /* misc flags */
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#define IT_FLAG1 0x0100 /* misc flags */
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#define IT_FLAG2 0x0200
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#define IT_FLAG2 0x0200
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#define IT_VOLATILE 0x0400 /* Should not be moved/removed */
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#define IT_VOLATILE 0x0400 /* Should not be moved/removed */
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#define IT_MEMADD 0x0800 /* add before the load -- should not be removed */
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#define IT_MEMADD 0x0800 /* add before the load -- should not be removed */
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#define IT_COND 0x1000 /* Conditional */
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#define IT_COND 0x1000 /* Conditional */
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#define IT_LATCHED 0x2000 /* Output of this instruction is latched/registered */
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#define IT_LATCHED 0x2000 /* Output of this instruction is latched/registered */
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#define IT_CUT 0x4000 /* After this instruction register is placed */
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#define IT_CUT 0x4000 /* After this instruction register is placed */
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#define OPT_NONE 0x00
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#define OPT_NONE 0x00
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#define OPT_CONST 0x01
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#define OPT_CONST 0x01
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#define OPT_REGISTER 0x02
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#define OPT_REGISTER 0x02
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#define OPT_REF 0x04
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#define OPT_REF 0x04
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#define OPT_JUMP 0x08 /* Jump to an instruction index */
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#define OPT_JUMP 0x08 /* Jump to an instruction index */
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#define OPT_DEST 0x10 /* This operand is dest */
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#define OPT_DEST 0x10 /* This operand is dest */
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#define OPT_BB 0x20 /* Jumpt to BB */
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#define OPT_BB 0x20 /* Jumpt to BB */
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#define OPT_LRBB 0x40 /* 0 if we came in from left BB, or 1 otherwise */
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#define OPT_LRBB 0x40 /* 0 if we came in from left BB, or 1 otherwise */
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#define MT_WIDTH 0x007 /* These bits hold memory access width in bytes */
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#define MT_WIDTH 0x007 /* These bits hold memory access width in bytes */
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#define MT_BURST 0x008 /* burst start & end markers */
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#define MT_BURST 0x008 /* burst start & end markers */
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#define MT_BURSTE 0x010
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#define MT_BURSTE 0x010
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#define MT_CALL 0x020 /* This is a call */
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#define MT_CALL 0x020 /* This is a call */
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#define MT_LOAD 0x040 /* This memory access does a read */
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#define MT_LOAD 0x040 /* This memory access does a read */
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#define MT_STORE 0x080 /* This memory access does a write */
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#define MT_STORE 0x080 /* This memory access does a write */
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#define MT_SIGNED 0x100 /* Signed memory access */
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#define MT_SIGNED 0x100 /* Signed memory access */
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#define MO_NONE 0 /* different memory ordering, even if there are dependencies,
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#define MO_NONE 0 /* different memory ordering, even if there are dependencies,
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burst can be made, width can change */
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burst can be made, width can change */
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#define MO_WEAK 1 /* different memory ordering, if there cannot be dependencies,
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#define MO_WEAK 1 /* different memory ordering, if there cannot be dependencies,
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burst can be made, width can change */
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burst can be made, width can change */
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#define MO_STRONG 2 /* Same memory ordering, burst can be made, width can change */
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#define MO_STRONG 2 /* Same memory ordering, burst can be made, width can change */
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#define MO_EXACT 3 /* Exacltly the same memory ordering and widths */
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#define MO_EXACT 3 /* Exacltly the same memory ordering and widths */
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#define BB_INLOOP 0x01 /* This block is inside a loop */
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#define BB_INLOOP 0x01 /* This block is inside a loop */
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#define BB_OPTIONAL 0x02
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#define BB_OPTIONAL 0x02
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#define BB_DEAD 0x08 /* This block is unaccessible -> to be removed */
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#define BB_DEAD 0x08 /* This block is unaccessible -> to be removed */
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#define BBID_START MAX_BB /* Start BB pointer */
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#define BBID_START MAX_BB /* Start BB pointer */
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#define BBID_END (MAX_BB + 1) /* End BB pointer */
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#define BBID_END (MAX_BB + 1) /* End BB pointer */
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/* Various macros to minimize code size */
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/* Various macros to minimize code size */
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#define REF(bb,i) (((bb) * MAX_INSNS) + (i))
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#define REF(bb,i) (((bb) * MAX_INSNS) + (i))
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#define REF_BB(r) ((r) / MAX_INSNS)
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#define REF_BB(r) ((r) / MAX_INSNS)
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#define REF_I(r) ((r) % MAX_INSNS)
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#define REF_I(r) ((r) % MAX_INSNS)
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#define INSN(ref) bb[REF_BB(ref)].insn[REF_I(ref)]
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#define INSN(ref) bb[REF_BB(ref)].insn[REF_I(ref)]
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#ifndef MIN
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#ifndef MIN
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# define MIN(x,y) ((x) < (y) ? (x) : (y))
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# define MIN(x,y) ((x) < (y) ? (x) : (y))
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#endif
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#endif
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#ifndef MAX
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#ifndef MAX
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# define MAX(x,y) ((x) > (y) ? (x) : (y))
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# define MAX(x,y) ((x) > (y) ? (x) : (y))
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#endif
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#endif
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#define log(x...) {fprintf (flog, x); fflush (flog); }
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#define log(x...) {fprintf (flog, x); fflush (flog); }
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#define cucdebug(x,s...) {if ((x) <= cuc_debug) PRINTF (s);}
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#define cucdebug(x,s...) {if ((x) <= cuc_debug) PRINTF (s);}
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#define CUC_WIDTH_ITERATIONS 256
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#define CUC_WIDTH_ITERATIONS 256
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/* Options */
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/* Options */
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/* Whether we are debugging cuc (0-9) */
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/* Whether we are debugging cuc (0-9) */
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extern int cuc_debug;
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extern int cuc_debug;
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/* Temporary registers by software convention */
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/* Temporary registers by software convention */
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extern const int caller_saved[MAX_REGS];
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extern const int caller_saved[MAX_REGS];
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typedef struct _dep_list_t
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typedef struct _dep_list_t
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{
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{
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unsigned long ref;
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unsigned long ref;
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struct _dep_list_t *next;
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struct _dep_list_t *next;
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} dep_list;
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} dep_list;
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/* Shared list, if marked dead, entry is not used */
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/* Shared list, if marked dead, entry is not used */
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typedef struct _csm_list
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typedef struct _csm_list
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{
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{
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int ref;
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int ref;
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int cnt;
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int cnt;
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int cmovs;
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int cmovs;
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double size, osize;
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double size, osize;
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int cmatch;
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int cmatch;
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int dead;
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int dead;
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int ninsn; /* Number of associated instructions */
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int ninsn; /* Number of associated instructions */
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struct _csm_list *from;
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struct _csm_list *from;
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struct _csm_list *next;
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struct _csm_list *next;
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} cuc_shared_list;
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} cuc_shared_list;
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/* Shared resource item definition */
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/* Shared resource item definition */
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typedef struct
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typedef struct
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{
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{
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int ref;
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int ref;
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int cmatch;
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int cmatch;
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} cuc_shared_item;
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} cuc_shared_item;
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/* Implementation specific timings */
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/* Implementation specific timings */
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typedef struct
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typedef struct
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{
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{
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int b; /* Basic block # this timing is referring to */
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int b; /* Basic block # this timing is referring to */
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int preroll; /* How many times was this BB pre/unrolled */
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int preroll; /* How many times was this BB pre/unrolled */
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int unroll;
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int unroll;
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int nshared;
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int nshared;
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cuc_shared_item *shared; /* List of shared resources */
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cuc_shared_item *shared; /* List of shared resources */
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int new_time;
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int new_time;
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double size;
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double size;
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} cuc_timings;
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} cuc_timings;
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/* Instructionn entity */
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/* Instructionn entity */
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typedef struct
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typedef struct
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{
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{
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int type; /* type of the instruction */
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int type; /* type of the instruction */
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int index; /* Instruction index */
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int index; /* Instruction index */
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int opt[MAX_OPERANDS]; /* operand types */
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int opt[MAX_OPERANDS]; /* operand types */
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unsigned long op[MAX_OPERANDS]; /* operand values */
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unsigned long op[MAX_OPERANDS]; /* operand values */
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dep_list *dep; /* instruction dependencies */
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dep_list *dep; /* instruction dependencies */
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unsigned long insn; /* Instruction opcode */
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unsigned long insn; /* Instruction opcode */
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char disasm[40]; /* disassembled string */
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char disasm[40]; /* disassembled string */
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unsigned long max; /* max result value */
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unsigned long max; /* max result value */
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int tmp;
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int tmp;
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} cuc_insn;
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} cuc_insn;
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/* Basic block entity */
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/* Basic block entity */
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typedef struct
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typedef struct
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{
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{
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unsigned long type; /* Type of the bb */
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unsigned long type; /* Type of the bb */
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int first, last; /* Where this block lies */
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int first, last; /* Where this block lies */
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int prev[2], next[2];
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int prev[2], next[2];
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int tmp;
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int tmp;
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cuc_insn *insn; /* Instructions lie here */
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cuc_insn *insn; /* Instructions lie here */
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int ninsn; /* Number of instructions */
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int ninsn; /* Number of instructions */
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int last_used_reg[MAX_REGS];
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int last_used_reg[MAX_REGS];
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dep_list *mdep; /* Last memory access dependencies */
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dep_list *mdep; /* Last memory access dependencies */
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int nmemory;
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int nmemory;
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int cnt; /* how many times was this block executed */
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int cnt; /* how many times was this block executed */
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int unrolled; /* how many times has been this block unrolled */
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int unrolled; /* how many times has been this block unrolled */
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int ntim; /* Basic block options */
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int ntim; /* Basic block options */
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cuc_timings *tim;
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cuc_timings *tim;
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int selected_tim; /* Selected option, -1 if none */
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int selected_tim; /* Selected option, -1 if none */
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} cuc_bb;
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} cuc_bb;
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/* Function entity */
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/* Function entity */
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typedef struct _cuc_func
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typedef struct _cuc_func
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{
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{
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/* Basic blocks */
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/* Basic blocks */
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int num_bb;
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int num_bb;
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cuc_bb bb[MAX_BB];
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cuc_bb bb[MAX_BB];
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int saved_regs[MAX_REGS]; /* Whether this register was saved */
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int saved_regs[MAX_REGS]; /* Whether this register was saved */
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int lur[MAX_REGS]; /* Location of last use */
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int lur[MAX_REGS]; /* Location of last use */
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int used_regs[MAX_REGS]; /* Nonzero if it was used */
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int used_regs[MAX_REGS]; /* Nonzero if it was used */
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/* Schedule of memory instructions */
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/* Schedule of memory instructions */
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int nmsched;
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int nmsched;
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int msched[MAX_INSNS];
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int msched[MAX_INSNS];
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int mtype[MAX_INSNS];
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int mtype[MAX_INSNS];
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/* initial bb and their relocations to new block numbers */
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/* initial bb and their relocations to new block numbers */
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int num_init_bb;
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int num_init_bb;
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int *init_bb_reloc;
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int *init_bb_reloc;
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int orig_time; /* time in cyc required for SW implementation */
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int orig_time; /* time in cyc required for SW implementation */
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int num_runs; /* Number times this function was run */
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int num_runs; /* Number times this function was run */
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cuc_timings timings; /* Base timings */
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cuc_timings timings; /* Base timings */
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unsigned long start_addr; /* Address of first instruction inn function */
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unsigned long start_addr; /* Address of first instruction inn function */
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unsigned long end_addr; /* Address of last instruction inn function */
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unsigned long end_addr; /* Address of last instruction inn function */
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int memory_order; /* Memory order */
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int memory_order; /* Memory order */
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int nfdeps; /* Function dependencies */
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int nfdeps; /* Function dependencies */
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struct _cuc_func **fdeps;
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struct _cuc_func **fdeps;
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int tmp;
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int tmp;
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} cuc_func;
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} cuc_func;
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/* Instructions from function */
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/* Instructions from function */
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extern cuc_insn insn[MAX_INSNS];
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extern cuc_insn insn[MAX_INSNS];
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extern int num_insn;
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extern int num_insn;
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extern int reloc[MAX_INSNS];
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extern int reloc[MAX_INSNS];
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extern FILE *flog;
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extern FILE *flog;
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/* Loads from file into global array insn */
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/* Loads from file into global array insn */
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int cuc_load (char *in_fn);
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int cuc_load (char *in_fn);
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/* Negates conditional instruction */
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/* Negates conditional instruction */
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void negate_conditional (cuc_insn * ii);
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void negate_conditional (cuc_insn * ii);
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/* Scans sequence of BBs and set bb[].cnt */
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/* Scans sequence of BBs and set bb[].cnt */
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void generate_bb_seq (cuc_func * f, char *mp_filename, char *bb_filename);
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void generate_bb_seq (cuc_func * f, char *mp_filename, char *bb_filename);
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/* Prints out instructions */
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/* Prints out instructions */
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void print_insns (int bb, cuc_insn * insn, int size, int verbose);
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void print_insns (int bb, cuc_insn * insn, int size, int verbose);
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/* prints out bb string */
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/* prints out bb string */
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void print_bb_num (int num);
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void print_bb_num (int num);
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/* Print out basic blocks */
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/* Print out basic blocks */
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void print_cuc_bb (cuc_func * func, char *s);
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void print_cuc_bb (cuc_func * func, char *s);
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/* Duplicates function */
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/* Duplicates function */
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cuc_func *dup_func (cuc_func * f);
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cuc_func *dup_func (cuc_func * f);
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/* Releases memory allocated by function */
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/* Releases memory allocated by function */
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void free_func (cuc_func * f);
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void free_func (cuc_func * f);
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/* Common subexpression matching -- resource sharing, analysis pass */
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/* Common subexpression matching -- resource sharing, analysis pass */
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void csm (cuc_func * f);
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void csm (cuc_func * f);
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/* Common subexpression matching -- resource sharing, generation pass */
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/* Common subexpression matching -- resource sharing, generation pass */
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void csm_gen (cuc_func * f, cuc_func * rf, cuc_shared_item * shared,
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void csm_gen (cuc_func * f, cuc_func * rf, cuc_shared_item * shared,
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int nshared);
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int nshared);
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/* Set the BB limits */
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/* Set the BB limits */
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void detect_bb (cuc_func * func);
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void detect_bb (cuc_func * func);
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/* Optimize basic blocks */
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/* Optimize basic blocks */
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int optimize_bb (cuc_func * func);
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int optimize_bb (cuc_func * func);
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/* Search and optimize complex cmov assignments */
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/* Search and optimize complex cmov assignments */
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int optimize_cmovs (cuc_func * func);
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int optimize_cmovs (cuc_func * func);
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/* Optimizes dataflow tree */
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/* Optimizes dataflow tree */
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int optimize_tree (cuc_func * func);
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int optimize_tree (cuc_func * func);
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/* Remove nop instructions */
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/* Remove nop instructions */
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int remove_nops (cuc_func * func);
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int remove_nops (cuc_func * func);
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/* Removes dead instruction */
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/* Removes dead instruction */
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int remove_dead (cuc_func * func);
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int remove_dead (cuc_func * func);
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/* Removes trivial register assignments */
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/* Removes trivial register assignments */
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int remove_trivial_regs (cuc_func * f);
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int remove_trivial_regs (cuc_func * f);
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/* Determine inputs and outputs */
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/* Determine inputs and outputs */
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void set_io (cuc_func * func);
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void set_io (cuc_func * func);
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/* Removes BBs marked as dead */
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/* Removes BBs marked as dead */
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int remove_dead_bb (cuc_func * func);
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int remove_dead_bb (cuc_func * func);
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/* Common subexpression elimination */
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/* Common subexpression elimination */
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int cse (cuc_func * f);
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int cse (cuc_func * f);
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/* Detect register dependencies */
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/* Detect register dependencies */
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void reg_dep (cuc_func * func);
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void reg_dep (cuc_func * func);
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/* Cuts the tree and marks registers */
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/* Cuts the tree and marks registers */
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void mark_cut (cuc_func * f);
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void mark_cut (cuc_func * f);
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/* Unroll loop b times times and return new function. Original
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/* Unroll loop b times times and return new function. Original
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function is unmodified. */
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function is unmodified. */
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cuc_func *preunroll_loop (cuc_func * func, int b, int preroll, int unroll,
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cuc_func *preunroll_loop (cuc_func * func, int b, int preroll, int unroll,
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char *bb_filename);
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char *bb_filename);
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/* Clean memory and data dependencies */
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/* Clean memory and data dependencies */
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void clean_deps (cuc_func * func);
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void clean_deps (cuc_func * func);
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/* Schedule memory accesses
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/* Schedule memory accesses
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0 - exact; 1 - strong; 2 - weak; 3 - none */
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0 - exact; 1 - strong; 2 - weak; 3 - none */
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int schedule_memory (cuc_func * func, int otype);
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int schedule_memory (cuc_func * func, int otype);
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/* Recalculates bb[].cnt values, based on generated profile file */
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/* Recalculates bb[].cnt values, based on generated profile file */
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void recalc_cnts (cuc_func * f, char *bb_filename);
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void recalc_cnts (cuc_func * f, char *bb_filename);
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/* Calculate timings */
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/* Calculate timings */
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void analyse_timings (cuc_func * func, cuc_timings * timings);
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void analyse_timings (cuc_func * func, cuc_timings * timings);
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/* Calculates facts, that are determined by conditionals */
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/* Calculates facts, that are determined by conditionals */
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void insert_conditional_facts (cuc_func * func);
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void insert_conditional_facts (cuc_func * func);
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/* Width optimization -- detect maximum values */
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/* Width optimization -- detect maximum values */
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void detect_max_values (cuc_func * f);
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void detect_max_values (cuc_func * f);
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/* Inserts n nops before insn 'ref' */
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/* Inserts n nops before insn 'ref' */
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void insert_insns (cuc_func * f, int ref, int n);
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void insert_insns (cuc_func * f, int ref, int n);
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/* Checks for some anomalies with references */
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/* Checks for some anomalies with references */
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void cuc_check (cuc_func * f);
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void cuc_check (cuc_func * f);
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/* Adds memory dependencies based on ordering type */
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/* Adds memory dependencies based on ordering type */
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void add_memory_dep (cuc_func * f, int otype);
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void add_memory_dep (cuc_func * f, int otype);
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/* Prints out instructions */
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/* Prints out instructions */
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void print_cuc_insns (char *s, int verbose);
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void print_cuc_insns (char *s, int verbose);
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/* Build basic blocks */
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/* Build basic blocks */
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void build_bb (cuc_func * f);
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void build_bb (cuc_func * f);
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/* Latch outputs in loops */
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/* Latch outputs in loops */
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void add_latches (cuc_func * f);
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void add_latches (cuc_func * f);
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/* split the BB, based on the group numbers in .tmp */
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/* split the BB, based on the group numbers in .tmp */
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void expand_bb (cuc_func * f, int b);
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void expand_bb (cuc_func * f, int b);
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void add_dep (dep_list ** list, int dep);
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void add_dep (dep_list ** list, int dep);
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void dispose_list (dep_list ** list);
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void dispose_list (dep_list ** list);
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void main_cuc (char *filename);
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void main_cuc (char *filename);
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void add_data_dep (cuc_func * f);
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void add_data_dep (cuc_func * f);
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void reg_cuc_sec ();
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void reg_cuc_sec ();
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#endif /* CUC__H */
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#endif /* CUC__H */
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