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jeremybenn |
;; Scheduling for the Intel P6 family of processors
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;; Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
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;;
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;; This file is part of GCC.
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;;
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;; GCC is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 3, or (at your option)
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;; any later version.
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;;
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;; GCC is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License 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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;; along with GCC; see the file COPYING3. If not see
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;; . */
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;; The P6 family includes the Pentium Pro, Pentium II, Pentium III, Celeron
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;; and Xeon lines of CPUs. The DFA scheduler description in this file is
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;; based on information that can be found in the following three documents:
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;;
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;; "P6 Family of Processors Hardware Developer's Manual",
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;; Intel, September 1999.
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;;
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;; "Intel Architecture Optimization Manual",
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;; Intel, 1999 (Order Number: 245127-001).
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;;
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;; "How to optimize for the Pentium family of microprocessors",
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;; by Agner Fog, PhD.
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;;
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;; The P6 pipeline has three major components:
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;; 1) the FETCH/DECODE unit, an in-order issue front-end
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;; 2) the DISPATCH/EXECUTE unit, which is the out-of-order core
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;; 3) the RETIRE unit, an in-order retirement unit
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;;
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;; So, the P6 CPUs have out-of-order cores, but the instruction decoder and
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;; retirement unit are naturally in-order.
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;;
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;; BUS INTERFACE UNIT
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;; / \
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;; L1 ICACHE L1 DCACHE
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;; / | \ | \
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;; DECODER0 DECODER1 DECODER2 DISP/EXEC RETIRE
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;; \ | / | |
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;; INSTRUCTION POOL __________|_______/
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;; (inc. reorder buffer)
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;;
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;; Since the P6 CPUs execute instructions out-of-order, the most important
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;; consideration in performance tuning is making sure enough micro-ops are
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;; ready for execution in the out-of-order core, while not stalling the
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;; decoder.
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;;
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;; TODO:
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;; - Find a less crude way to model complex instructions, in
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;; particular how many cycles they take to be decoded.
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;; - Include decoder latencies in the total reservation latencies.
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;; This isn't necessary right now because we assume for every
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;; instruction that it never blocks a decoder.
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;; - Figure out where the p0 and p1 reservations come from. These
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;; appear not to be in the manual
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;; - Lots more because I'm sure this is still far from optimal :-)
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;; The ppro_idiv and ppro_fdiv automata are used to model issue
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;; latencies of idiv and fdiv type insns.
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(define_automaton "ppro_decoder,ppro_core,ppro_idiv,ppro_fdiv,ppro_load,ppro_store")
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;; Simple instructions of the register-register form have only one uop.
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;; Load instructions are also only one uop. Store instructions decode to
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;; two uops, and simple read-modify instructions also take two uops.
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;; Simple instructions of the register-memory form have two to three uops.
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;; Simple read-modify-write instructions have four uops. The rules for
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;; the decoder are simple:
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;; - an instruction with 1 uop can be decoded by any of the three
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;; decoders in one cycle.
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;; - an instruction with 1 to 4 uops can be decoded only by decoder 0
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;; but still in only one cycle.
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;; - a complex (microcode) instruction can also only be decoded by
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;; decoder 0, and this takes an unspecified number of cycles.
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;;
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;; The goal is to schedule such that we have a few-one-one uops sequence
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;; in each cycle, to decode as many instructions per cycle as possible.
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(define_cpu_unit "decoder0" "ppro_decoder")
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(define_cpu_unit "decoder1" "ppro_decoder")
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(define_cpu_unit "decoder2" "ppro_decoder")
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;; We first wish to find an instruction for decoder0, so exclude
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;; decoder1 and decoder2 from being reserved until decoder 0 is
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;; reserved.
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(presence_set "decoder1" "decoder0")
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(presence_set "decoder2" "decoder0")
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;; Most instructions can be decoded on any of the three decoders.
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(define_reservation "decodern" "(decoder0|decoder1|decoder2)")
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;; The out-of-order core has five pipelines. During each cycle, the core
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;; may dispatch zero or one uop on the port of any of the five pipelines
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;; so the maximum number of dispatched uops per cycle is 5. In practicer,
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;; 3 uops per cycle is more realistic.
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;;
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;; Two of the five pipelines contain several execution units:
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;;
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;; Port 0 Port 1 Port 2 Port 3 Port 4
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;; ALU ALU LOAD SAC SDA
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;; FPU JUE
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;; AGU MMX
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;; MMX P3FPU
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;; P3FPU
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;;
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;; (SAC=Store Address Calculation, SDA=Store Data Unit, P3FPU = SSE unit,
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;; JUE = Jump Execution Unit, AGU = Address Generation Unit)
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;;
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(define_cpu_unit "p0,p1" "ppro_core")
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(define_cpu_unit "p2" "ppro_load")
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(define_cpu_unit "p3,p4" "ppro_store")
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(define_cpu_unit "idiv" "ppro_idiv")
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(define_cpu_unit "fdiv" "ppro_fdiv")
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;; Only the irregular instructions have to be modeled here. A load
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;; increases the latency by 2 or 3, or by nothing if the manual gives
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;; a latency already. Store latencies are not accounted for.
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;;
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;; The simple instructions follow a very regular pattern of 1 uop per
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;; reg-reg operation, 1 uop per load on port 2. and 2 uops per store
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;; on port 4 and port 3. These instructions are modelled at the bottom
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;; of this file.
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;;
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;; For microcoded instructions we don't know how many uops are produced.
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;; These instructions are the "complex" ones in the Intel manuals. All
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;; we _do_ know is that they typically produce four or more uops, so
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;; they can only be decoded on decoder0. Modelling their latencies
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;; doesn't make sense because we don't know how these instructions are
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;; executed in the core. So we just model that they can only be decoded
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;; on decoder 0, and say that it takes a little while before the result
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;; is available.
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(define_insn_reservation "ppro_complex_insn" 6
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(and (eq_attr "cpu" "pentiumpro")
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(eq_attr "type" "other,multi,call,callv,str"))
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"decoder0")
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;; imov with memory operands does not use the integer units.
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(define_insn_reservation "ppro_imov" 1
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(and (eq_attr "cpu" "pentiumpro")
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(and (eq_attr "memory" "none")
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(eq_attr "type" "imov")))
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"decodern,(p0|p1)")
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(define_insn_reservation "ppro_imov_load" 4
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(and (eq_attr "cpu" "pentiumpro")
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(and (eq_attr "memory" "load")
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(eq_attr "type" "imov")))
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"decodern,p2")
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(define_insn_reservation "ppro_imov_store" 1
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(and (eq_attr "cpu" "pentiumpro")
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(and (eq_attr "memory" "store")
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(eq_attr "type" "imov")))
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"decoder0,p4+p3")
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;; imovx always decodes to one uop, and also doesn't use the integer
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;; units if it has memory operands.
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(define_insn_reservation "ppro_imovx" 1
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(and (eq_attr "cpu" "pentiumpro")
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(and (eq_attr "memory" "none")
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(eq_attr "type" "imovx")))
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"decodern,(p0|p1)")
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(define_insn_reservation "ppro_imovx_load" 4
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(and (eq_attr "cpu" "pentiumpro")
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(and (eq_attr "memory" "load")
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(eq_attr "type" "imovx")))
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"decodern,p2")
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;; lea executes on port 0 with latency one and throughput 1.
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(define_insn_reservation "ppro_lea" 1
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(and (eq_attr "cpu" "pentiumpro")
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(and (eq_attr "memory" "none")
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(eq_attr "type" "lea")))
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"decodern,p0")
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;; Shift and rotate execute on port 0 with latency and throughput 1.
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;; The load and store units need to be reserved when memory operands
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;; are involved.
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(define_insn_reservation "ppro_shift_rotate" 1
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(and (eq_attr "cpu" "pentiumpro")
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(and (eq_attr "memory" "none")
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(eq_attr "type" "ishift,ishift1,rotate,rotate1")))
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"decodern,p0")
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(define_insn_reservation "ppro_shift_rotate_mem" 4
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(and (eq_attr "cpu" "pentiumpro")
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(and (eq_attr "memory" "!none")
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(eq_attr "type" "ishift,ishift1,rotate,rotate1")))
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"decoder0,p2+p0,p4+p3")
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;; The P6 has a sophisticated branch prediction mechanism to minimize
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;; latencies due to branching. In particular, it has a fast way to
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;; execute branches that are taken multiple times (such as in loops).
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;; Branches not taken suffer no penalty, and correctly predicted
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;; branches cost only one fetch cycle. Mispredicted branches are very
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;; costly: typically 15 cycles and possibly as many as 26 cycles.
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;;
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;; Unfortunately all this makes it quite difficult to properly model
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;; the latencies for the compiler. Here I've made the choice to be
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;; optimistic and assume branches are often predicted correctly, so
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;; they have latency 1, and the decoders are not blocked.
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;;
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;; In addition, the model assumes a branch always decodes to only 1 uop,
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;; which is not exactly true because there are a few instructions that
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;; decode to 2 uops or microcode. But this probably gives the best
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;; results because we can assume these instructions can decode on all
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;; decoders.
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(define_insn_reservation "ppro_branch" 1
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(and (eq_attr "cpu" "pentiumpro")
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(and (eq_attr "memory" "none")
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(eq_attr "type" "ibr")))
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"decodern,p1")
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;; ??? Indirect branches probably have worse latency than this.
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(define_insn_reservation "ppro_indirect_branch" 6
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(and (eq_attr "cpu" "pentiumpro")
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(and (eq_attr "memory" "!none")
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(eq_attr "type" "ibr")))
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"decoder0,p2+p1")
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(define_insn_reservation "ppro_leave" 4
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(and (eq_attr "cpu" "pentiumpro")
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(eq_attr "type" "leave"))
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"decoder0,p2+(p0|p1),(p0|p1)")
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;; imul has throughput one, but latency 4, and can only execute on port 0.
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(define_insn_reservation "ppro_imul" 4
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(and (eq_attr "cpu" "pentiumpro")
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(and (eq_attr "memory" "none")
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(eq_attr "type" "imul")))
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"decodern,p0")
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(define_insn_reservation "ppro_imul_mem" 4
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(and (eq_attr "cpu" "pentiumpro")
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(and (eq_attr "memory" "!none")
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(eq_attr "type" "imul")))
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"decoder0,p2+p0")
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;; div and idiv are very similar, so we model them the same.
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;; QI, HI, and SI have issue latency 12, 21, and 37, respectively.
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;; These issue latencies are modelled via the ppro_div automaton.
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(define_insn_reservation "ppro_idiv_QI" 19
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(and (eq_attr "cpu" "pentiumpro")
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(and (eq_attr "memory" "none")
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(and (eq_attr "mode" "QI")
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(eq_attr "type" "idiv"))))
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"decoder0,(p0+idiv)*2,(p0|p1)+idiv,idiv*9")
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(define_insn_reservation "ppro_idiv_QI_load" 19
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(and (eq_attr "cpu" "pentiumpro")
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(and (eq_attr "memory" "load")
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(and (eq_attr "mode" "QI")
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(eq_attr "type" "idiv"))))
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"decoder0,p2+p0+idiv,p0+idiv,(p0|p1)+idiv,idiv*9")
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(define_insn_reservation "ppro_idiv_HI" 23
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(and (eq_attr "cpu" "pentiumpro")
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(and (eq_attr "memory" "none")
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(and (eq_attr "mode" "HI")
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(eq_attr "type" "idiv"))))
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"decoder0,(p0+idiv)*3,(p0|p1)+idiv,idiv*17")
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(define_insn_reservation "ppro_idiv_HI_load" 23
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(and (eq_attr "cpu" "pentiumpro")
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(and (eq_attr "memory" "load")
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(and (eq_attr "mode" "HI")
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(eq_attr "type" "idiv"))))
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"decoder0,p2+p0+idiv,p0+idiv,(p0|p1)+idiv,idiv*18")
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(define_insn_reservation "ppro_idiv_SI" 39
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(and (eq_attr "cpu" "pentiumpro")
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(and (eq_attr "memory" "none")
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(and (eq_attr "mode" "SI")
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(eq_attr "type" "idiv"))))
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"decoder0,(p0+idiv)*3,(p0|p1)+idiv,idiv*33")
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(define_insn_reservation "ppro_idiv_SI_load" 39
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(and (eq_attr "cpu" "pentiumpro")
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(and (eq_attr "memory" "load")
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(and (eq_attr "mode" "SI")
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(eq_attr "type" "idiv"))))
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"decoder0,p2+p0+idiv,p0+idiv,(p0|p1)+idiv,idiv*34")
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;; Floating point operations always execute on port 0.
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;; ??? where do these latencies come from? fadd has latency 3 and
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| 293 |
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;; has throughput "1/cycle (align with FADD)". What do they
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;; mean and how can we model that?
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(define_insn_reservation "ppro_fop" 3
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(and (eq_attr "cpu" "pentiumpro")
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(and (eq_attr "memory" "none,unknown")
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|
|
(eq_attr "type" "fop")))
|
| 299 |
|
|
"decodern,p0")
|
| 300 |
|
|
|
| 301 |
|
|
(define_insn_reservation "ppro_fop_load" 5
|
| 302 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 303 |
|
|
(and (eq_attr "memory" "load")
|
| 304 |
|
|
(eq_attr "type" "fop")))
|
| 305 |
|
|
"decoder0,p2+p0,p0")
|
| 306 |
|
|
|
| 307 |
|
|
(define_insn_reservation "ppro_fop_store" 3
|
| 308 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 309 |
|
|
(and (eq_attr "memory" "store")
|
| 310 |
|
|
(eq_attr "type" "fop")))
|
| 311 |
|
|
"decoder0,p0,p0,p0+p4+p3")
|
| 312 |
|
|
|
| 313 |
|
|
(define_insn_reservation "ppro_fop_both" 5
|
| 314 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 315 |
|
|
(and (eq_attr "memory" "both")
|
| 316 |
|
|
(eq_attr "type" "fop")))
|
| 317 |
|
|
"decoder0,p2+p0,p0+p4+p3")
|
| 318 |
|
|
|
| 319 |
|
|
(define_insn_reservation "ppro_fsgn" 1
|
| 320 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 321 |
|
|
(eq_attr "type" "fsgn"))
|
| 322 |
|
|
"decodern,p0")
|
| 323 |
|
|
|
| 324 |
|
|
(define_insn_reservation "ppro_fistp" 5
|
| 325 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 326 |
|
|
(eq_attr "type" "fistp"))
|
| 327 |
|
|
"decoder0,p0*2,p4+p3")
|
| 328 |
|
|
|
| 329 |
|
|
(define_insn_reservation "ppro_fcmov" 2
|
| 330 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 331 |
|
|
(eq_attr "type" "fcmov"))
|
| 332 |
|
|
"decoder0,p0*2")
|
| 333 |
|
|
|
| 334 |
|
|
(define_insn_reservation "ppro_fcmp" 1
|
| 335 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 336 |
|
|
(and (eq_attr "memory" "none")
|
| 337 |
|
|
(eq_attr "type" "fcmp")))
|
| 338 |
|
|
"decodern,p0")
|
| 339 |
|
|
|
| 340 |
|
|
(define_insn_reservation "ppro_fcmp_load" 4
|
| 341 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 342 |
|
|
(and (eq_attr "memory" "load")
|
| 343 |
|
|
(eq_attr "type" "fcmp")))
|
| 344 |
|
|
"decoder0,p2+p0")
|
| 345 |
|
|
|
| 346 |
|
|
(define_insn_reservation "ppro_fmov" 1
|
| 347 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 348 |
|
|
(and (eq_attr "memory" "none")
|
| 349 |
|
|
(eq_attr "type" "fmov")))
|
| 350 |
|
|
"decodern,p0")
|
| 351 |
|
|
|
| 352 |
|
|
(define_insn_reservation "ppro_fmov_load" 1
|
| 353 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 354 |
|
|
(and (eq_attr "memory" "load")
|
| 355 |
|
|
(and (eq_attr "mode" "!XF")
|
| 356 |
|
|
(eq_attr "type" "fmov"))))
|
| 357 |
|
|
"decodern,p2")
|
| 358 |
|
|
|
| 359 |
|
|
(define_insn_reservation "ppro_fmov_XF_load" 3
|
| 360 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 361 |
|
|
(and (eq_attr "memory" "load")
|
| 362 |
|
|
(and (eq_attr "mode" "XF")
|
| 363 |
|
|
(eq_attr "type" "fmov"))))
|
| 364 |
|
|
"decoder0,(p2+p0)*2")
|
| 365 |
|
|
|
| 366 |
|
|
(define_insn_reservation "ppro_fmov_store" 1
|
| 367 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 368 |
|
|
(and (eq_attr "memory" "store")
|
| 369 |
|
|
(and (eq_attr "mode" "!XF")
|
| 370 |
|
|
(eq_attr "type" "fmov"))))
|
| 371 |
|
|
"decodern,p0")
|
| 372 |
|
|
|
| 373 |
|
|
(define_insn_reservation "ppro_fmov_XF_store" 3
|
| 374 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 375 |
|
|
(and (eq_attr "memory" "store")
|
| 376 |
|
|
(and (eq_attr "mode" "XF")
|
| 377 |
|
|
(eq_attr "type" "fmov"))))
|
| 378 |
|
|
"decoder0,(p0+p4),(p0+p3)")
|
| 379 |
|
|
|
| 380 |
|
|
;; fmul executes on port 0 with latency 5. It has issue latency 2,
|
| 381 |
|
|
;; but we don't model this.
|
| 382 |
|
|
(define_insn_reservation "ppro_fmul" 5
|
| 383 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 384 |
|
|
(and (eq_attr "memory" "none")
|
| 385 |
|
|
(eq_attr "type" "fmul")))
|
| 386 |
|
|
"decoder0,p0*2")
|
| 387 |
|
|
|
| 388 |
|
|
(define_insn_reservation "ppro_fmul_load" 6
|
| 389 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 390 |
|
|
(and (eq_attr "memory" "load")
|
| 391 |
|
|
(eq_attr "type" "fmul")))
|
| 392 |
|
|
"decoder0,p2+p0,p0")
|
| 393 |
|
|
|
| 394 |
|
|
;; fdiv latencies depend on the mode of the operands. XFmode gives
|
| 395 |
|
|
;; a latency of 38 cycles, DFmode gives 32, and SFmode gives latency 18.
|
| 396 |
|
|
;; Division by a power of 2 takes only 9 cycles, but we cannot model
|
| 397 |
|
|
;; that. Throughput is equal to latency - 1, which we model using the
|
| 398 |
|
|
;; ppro_div automaton.
|
| 399 |
|
|
(define_insn_reservation "ppro_fdiv_SF" 18
|
| 400 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 401 |
|
|
(and (eq_attr "memory" "none")
|
| 402 |
|
|
(and (eq_attr "mode" "SF")
|
| 403 |
|
|
(eq_attr "type" "fdiv,fpspc"))))
|
| 404 |
|
|
"decodern,p0+fdiv,fdiv*16")
|
| 405 |
|
|
|
| 406 |
|
|
(define_insn_reservation "ppro_fdiv_SF_load" 19
|
| 407 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 408 |
|
|
(and (eq_attr "memory" "load")
|
| 409 |
|
|
(and (eq_attr "mode" "SF")
|
| 410 |
|
|
(eq_attr "type" "fdiv,fpspc"))))
|
| 411 |
|
|
"decoder0,p2+p0+fdiv,fdiv*16")
|
| 412 |
|
|
|
| 413 |
|
|
(define_insn_reservation "ppro_fdiv_DF" 32
|
| 414 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 415 |
|
|
(and (eq_attr "memory" "none")
|
| 416 |
|
|
(and (eq_attr "mode" "DF")
|
| 417 |
|
|
(eq_attr "type" "fdiv,fpspc"))))
|
| 418 |
|
|
"decodern,p0+fdiv,fdiv*30")
|
| 419 |
|
|
|
| 420 |
|
|
(define_insn_reservation "ppro_fdiv_DF_load" 33
|
| 421 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 422 |
|
|
(and (eq_attr "memory" "load")
|
| 423 |
|
|
(and (eq_attr "mode" "DF")
|
| 424 |
|
|
(eq_attr "type" "fdiv,fpspc"))))
|
| 425 |
|
|
"decoder0,p2+p0+fdiv,fdiv*30")
|
| 426 |
|
|
|
| 427 |
|
|
(define_insn_reservation "ppro_fdiv_XF" 38
|
| 428 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 429 |
|
|
(and (eq_attr "memory" "none")
|
| 430 |
|
|
(and (eq_attr "mode" "XF")
|
| 431 |
|
|
(eq_attr "type" "fdiv,fpspc"))))
|
| 432 |
|
|
"decodern,p0+fdiv,fdiv*36")
|
| 433 |
|
|
|
| 434 |
|
|
(define_insn_reservation "ppro_fdiv_XF_load" 39
|
| 435 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 436 |
|
|
(and (eq_attr "memory" "load")
|
| 437 |
|
|
(and (eq_attr "mode" "XF")
|
| 438 |
|
|
(eq_attr "type" "fdiv,fpspc"))))
|
| 439 |
|
|
"decoder0,p2+p0+fdiv,fdiv*36")
|
| 440 |
|
|
|
| 441 |
|
|
;; MMX instructions can execute on either port 0 or port 1 with a
|
| 442 |
|
|
;; throughput of 1/cycle.
|
| 443 |
|
|
;; on port 0: - ALU (latency 1)
|
| 444 |
|
|
;; - Multiplier Unit (latency 3)
|
| 445 |
|
|
;; on port 1: - ALU (latency 1)
|
| 446 |
|
|
;; - Shift Unit (latency 1)
|
| 447 |
|
|
;;
|
| 448 |
|
|
;; MMX instructions are either of the type reg-reg, or read-modify, and
|
| 449 |
|
|
;; except for mmxshft and mmxmul they can execute on port 0 or port 1,
|
| 450 |
|
|
;; so they behave as "simple" instructions that need no special modelling.
|
| 451 |
|
|
;; We only have to model mmxshft and mmxmul.
|
| 452 |
|
|
(define_insn_reservation "ppro_mmx_shft" 1
|
| 453 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 454 |
|
|
(and (eq_attr "memory" "none")
|
| 455 |
|
|
(eq_attr "type" "mmxshft")))
|
| 456 |
|
|
"decodern,p1")
|
| 457 |
|
|
|
| 458 |
|
|
(define_insn_reservation "ppro_mmx_shft_load" 2
|
| 459 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 460 |
|
|
(and (eq_attr "memory" "none")
|
| 461 |
|
|
(eq_attr "type" "mmxshft")))
|
| 462 |
|
|
"decoder0,p2+p1")
|
| 463 |
|
|
|
| 464 |
|
|
(define_insn_reservation "ppro_mmx_mul" 3
|
| 465 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 466 |
|
|
(and (eq_attr "memory" "none")
|
| 467 |
|
|
(eq_attr "type" "mmxmul")))
|
| 468 |
|
|
"decodern,p0")
|
| 469 |
|
|
|
| 470 |
|
|
(define_insn_reservation "ppro_mmx_mul_load" 3
|
| 471 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 472 |
|
|
(and (eq_attr "memory" "none")
|
| 473 |
|
|
(eq_attr "type" "mmxmul")))
|
| 474 |
|
|
"decoder0,p2+p0")
|
| 475 |
|
|
|
| 476 |
|
|
(define_insn_reservation "ppro_sse_mmxcvt" 4
|
| 477 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 478 |
|
|
(and (eq_attr "mode" "DI")
|
| 479 |
|
|
(eq_attr "type" "mmxcvt")))
|
| 480 |
|
|
"decodern,p1")
|
| 481 |
|
|
|
| 482 |
|
|
;; FIXME: These are Pentium III only, but we cannot tell here if
|
| 483 |
|
|
;; we're generating code for PentiumPro/Pentium II or Pentium III
|
| 484 |
|
|
;; (define_insn_reservation "ppro_sse_mmxshft" 2
|
| 485 |
|
|
;; (and (eq_attr "cpu" "pentiumpro")
|
| 486 |
|
|
;; (and (eq_attr "mode" "DI")
|
| 487 |
|
|
;; (eq_attr "type" "mmxshft")))
|
| 488 |
|
|
;; "decodern,p0")
|
| 489 |
|
|
|
| 490 |
|
|
;; SSE is very complicated, and takes a bit more effort.
|
| 491 |
|
|
;; ??? I assumed that all SSE instructions decode on decoder0,
|
| 492 |
|
|
;; but is this correct?
|
| 493 |
|
|
|
| 494 |
|
|
;; The sfence instruction.
|
| 495 |
|
|
(define_insn_reservation "ppro_sse_sfence" 3
|
| 496 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 497 |
|
|
(and (eq_attr "memory" "unknown")
|
| 498 |
|
|
(eq_attr "type" "sse")))
|
| 499 |
|
|
"decoder0,p4+p3")
|
| 500 |
|
|
|
| 501 |
|
|
;; FIXME: This reservation is all wrong when we're scheduling sqrtss.
|
| 502 |
|
|
(define_insn_reservation "ppro_sse_SF" 3
|
| 503 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 504 |
|
|
(and (eq_attr "mode" "SF")
|
| 505 |
|
|
(eq_attr "type" "sse")))
|
| 506 |
|
|
"decodern,p0")
|
| 507 |
|
|
|
| 508 |
|
|
(define_insn_reservation "ppro_sse_add_SF" 3
|
| 509 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 510 |
|
|
(and (eq_attr "memory" "none")
|
| 511 |
|
|
(and (eq_attr "mode" "SF")
|
| 512 |
|
|
(eq_attr "type" "sseadd"))))
|
| 513 |
|
|
"decodern,p1")
|
| 514 |
|
|
|
| 515 |
|
|
(define_insn_reservation "ppro_sse_add_SF_load" 3
|
| 516 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 517 |
|
|
(and (eq_attr "memory" "load")
|
| 518 |
|
|
(and (eq_attr "mode" "SF")
|
| 519 |
|
|
(eq_attr "type" "sseadd"))))
|
| 520 |
|
|
"decoder0,p2+p1")
|
| 521 |
|
|
|
| 522 |
|
|
(define_insn_reservation "ppro_sse_cmp_SF" 3
|
| 523 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 524 |
|
|
(and (eq_attr "memory" "none")
|
| 525 |
|
|
(and (eq_attr "mode" "SF")
|
| 526 |
|
|
(eq_attr "type" "ssecmp"))))
|
| 527 |
|
|
"decoder0,p1")
|
| 528 |
|
|
|
| 529 |
|
|
(define_insn_reservation "ppro_sse_cmp_SF_load" 3
|
| 530 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 531 |
|
|
(and (eq_attr "memory" "load")
|
| 532 |
|
|
(and (eq_attr "mode" "SF")
|
| 533 |
|
|
(eq_attr "type" "ssecmp"))))
|
| 534 |
|
|
"decoder0,p2+p1")
|
| 535 |
|
|
|
| 536 |
|
|
(define_insn_reservation "ppro_sse_comi_SF" 1
|
| 537 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 538 |
|
|
(and (eq_attr "memory" "none")
|
| 539 |
|
|
(and (eq_attr "mode" "SF")
|
| 540 |
|
|
(eq_attr "type" "ssecomi"))))
|
| 541 |
|
|
"decodern,p0")
|
| 542 |
|
|
|
| 543 |
|
|
(define_insn_reservation "ppro_sse_comi_SF_load" 1
|
| 544 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 545 |
|
|
(and (eq_attr "memory" "load")
|
| 546 |
|
|
(and (eq_attr "mode" "SF")
|
| 547 |
|
|
(eq_attr "type" "ssecomi"))))
|
| 548 |
|
|
"decoder0,p2+p0")
|
| 549 |
|
|
|
| 550 |
|
|
(define_insn_reservation "ppro_sse_mul_SF" 4
|
| 551 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 552 |
|
|
(and (eq_attr "memory" "none")
|
| 553 |
|
|
(and (eq_attr "mode" "SF")
|
| 554 |
|
|
(eq_attr "type" "ssemul"))))
|
| 555 |
|
|
"decodern,p0")
|
| 556 |
|
|
|
| 557 |
|
|
(define_insn_reservation "ppro_sse_mul_SF_load" 4
|
| 558 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 559 |
|
|
(and (eq_attr "memory" "load")
|
| 560 |
|
|
(and (eq_attr "mode" "SF")
|
| 561 |
|
|
(eq_attr "type" "ssemul"))))
|
| 562 |
|
|
"decoder0,p2+p0")
|
| 563 |
|
|
|
| 564 |
|
|
;; FIXME: ssediv doesn't close p0 for 17 cycles, surely???
|
| 565 |
|
|
(define_insn_reservation "ppro_sse_div_SF" 18
|
| 566 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 567 |
|
|
(and (eq_attr "memory" "none")
|
| 568 |
|
|
(and (eq_attr "mode" "SF")
|
| 569 |
|
|
(eq_attr "type" "ssediv"))))
|
| 570 |
|
|
"decoder0,p0*17")
|
| 571 |
|
|
|
| 572 |
|
|
(define_insn_reservation "ppro_sse_div_SF_load" 18
|
| 573 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 574 |
|
|
(and (eq_attr "memory" "none")
|
| 575 |
|
|
(and (eq_attr "mode" "SF")
|
| 576 |
|
|
(eq_attr "type" "ssediv"))))
|
| 577 |
|
|
"decoder0,(p2+p0),p0*16")
|
| 578 |
|
|
|
| 579 |
|
|
(define_insn_reservation "ppro_sse_icvt_SF" 4
|
| 580 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 581 |
|
|
(and (eq_attr "mode" "SF")
|
| 582 |
|
|
(eq_attr "type" "sseicvt")))
|
| 583 |
|
|
"decoder0,(p2+p1)*2")
|
| 584 |
|
|
|
| 585 |
|
|
(define_insn_reservation "ppro_sse_icvt_SI" 3
|
| 586 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 587 |
|
|
(and (eq_attr "mode" "SI")
|
| 588 |
|
|
(eq_attr "type" "sseicvt")))
|
| 589 |
|
|
"decoder0,(p2+p1)")
|
| 590 |
|
|
|
| 591 |
|
|
(define_insn_reservation "ppro_sse_mov_SF" 3
|
| 592 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 593 |
|
|
(and (eq_attr "memory" "none")
|
| 594 |
|
|
(and (eq_attr "mode" "SF")
|
| 595 |
|
|
(eq_attr "type" "ssemov"))))
|
| 596 |
|
|
"decoder0,(p0|p1)")
|
| 597 |
|
|
|
| 598 |
|
|
(define_insn_reservation "ppro_sse_mov_SF_load" 3
|
| 599 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 600 |
|
|
(and (eq_attr "memory" "load")
|
| 601 |
|
|
(and (eq_attr "mode" "SF")
|
| 602 |
|
|
(eq_attr "type" "ssemov"))))
|
| 603 |
|
|
"decoder0,p2+(p0|p1)")
|
| 604 |
|
|
|
| 605 |
|
|
(define_insn_reservation "ppro_sse_mov_SF_store" 3
|
| 606 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 607 |
|
|
(and (eq_attr "memory" "store")
|
| 608 |
|
|
(and (eq_attr "mode" "SF")
|
| 609 |
|
|
(eq_attr "type" "ssemov"))))
|
| 610 |
|
|
"decoder0,p4+p3")
|
| 611 |
|
|
|
| 612 |
|
|
(define_insn_reservation "ppro_sse_V4SF" 4
|
| 613 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 614 |
|
|
(and (eq_attr "mode" "V4SF")
|
| 615 |
|
|
(eq_attr "type" "sse")))
|
| 616 |
|
|
"decoder0,p1*2")
|
| 617 |
|
|
|
| 618 |
|
|
(define_insn_reservation "ppro_sse_add_V4SF" 3
|
| 619 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 620 |
|
|
(and (eq_attr "memory" "none")
|
| 621 |
|
|
(and (eq_attr "mode" "V4SF")
|
| 622 |
|
|
(eq_attr "type" "sseadd"))))
|
| 623 |
|
|
"decoder0,p1*2")
|
| 624 |
|
|
|
| 625 |
|
|
(define_insn_reservation "ppro_sse_add_V4SF_load" 3
|
| 626 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 627 |
|
|
(and (eq_attr "memory" "load")
|
| 628 |
|
|
(and (eq_attr "mode" "V4SF")
|
| 629 |
|
|
(eq_attr "type" "sseadd"))))
|
| 630 |
|
|
"decoder0,(p2+p1)*2")
|
| 631 |
|
|
|
| 632 |
|
|
(define_insn_reservation "ppro_sse_cmp_V4SF" 3
|
| 633 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 634 |
|
|
(and (eq_attr "memory" "none")
|
| 635 |
|
|
(and (eq_attr "mode" "V4SF")
|
| 636 |
|
|
(eq_attr "type" "ssecmp"))))
|
| 637 |
|
|
"decoder0,p1*2")
|
| 638 |
|
|
|
| 639 |
|
|
(define_insn_reservation "ppro_sse_cmp_V4SF_load" 3
|
| 640 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 641 |
|
|
(and (eq_attr "memory" "load")
|
| 642 |
|
|
(and (eq_attr "mode" "V4SF")
|
| 643 |
|
|
(eq_attr "type" "ssecmp"))))
|
| 644 |
|
|
"decoder0,(p2+p1)*2")
|
| 645 |
|
|
|
| 646 |
|
|
(define_insn_reservation "ppro_sse_cvt_V4SF" 3
|
| 647 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 648 |
|
|
(and (eq_attr "memory" "none,unknown")
|
| 649 |
|
|
(and (eq_attr "mode" "V4SF")
|
| 650 |
|
|
(eq_attr "type" "ssecvt"))))
|
| 651 |
|
|
"decoder0,p1*2")
|
| 652 |
|
|
|
| 653 |
|
|
(define_insn_reservation "ppro_sse_cvt_V4SF_other" 4
|
| 654 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 655 |
|
|
(and (eq_attr "memory" "!none,unknown")
|
| 656 |
|
|
(and (eq_attr "mode" "V4SF")
|
| 657 |
|
|
(eq_attr "type" "ssecmp"))))
|
| 658 |
|
|
"decoder0,p1,p4+p3")
|
| 659 |
|
|
|
| 660 |
|
|
(define_insn_reservation "ppro_sse_mul_V4SF" 5
|
| 661 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 662 |
|
|
(and (eq_attr "memory" "none")
|
| 663 |
|
|
(and (eq_attr "mode" "V4SF")
|
| 664 |
|
|
(eq_attr "type" "ssemul"))))
|
| 665 |
|
|
"decoder0,p0*2")
|
| 666 |
|
|
|
| 667 |
|
|
(define_insn_reservation "ppro_sse_mul_V4SF_load" 5
|
| 668 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 669 |
|
|
(and (eq_attr "memory" "load")
|
| 670 |
|
|
(and (eq_attr "mode" "V4SF")
|
| 671 |
|
|
(eq_attr "type" "ssemul"))))
|
| 672 |
|
|
"decoder0,(p2+p0)*2")
|
| 673 |
|
|
|
| 674 |
|
|
;; FIXME: p0 really closed this long???
|
| 675 |
|
|
(define_insn_reservation "ppro_sse_div_V4SF" 48
|
| 676 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 677 |
|
|
(and (eq_attr "memory" "none")
|
| 678 |
|
|
(and (eq_attr "mode" "V4SF")
|
| 679 |
|
|
(eq_attr "type" "ssediv"))))
|
| 680 |
|
|
"decoder0,p0*34")
|
| 681 |
|
|
|
| 682 |
|
|
(define_insn_reservation "ppro_sse_div_V4SF_load" 48
|
| 683 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 684 |
|
|
(and (eq_attr "memory" "load")
|
| 685 |
|
|
(and (eq_attr "mode" "V4SF")
|
| 686 |
|
|
(eq_attr "type" "ssediv"))))
|
| 687 |
|
|
"decoder0,(p2+p0)*2,p0*32")
|
| 688 |
|
|
|
| 689 |
|
|
(define_insn_reservation "ppro_sse_log_V4SF" 2
|
| 690 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 691 |
|
|
(and (eq_attr "memory" "none")
|
| 692 |
|
|
(and (eq_attr "mode" "V4SF")
|
| 693 |
|
|
(eq_attr "type" "sselog,sselog1"))))
|
| 694 |
|
|
"decodern,p1")
|
| 695 |
|
|
|
| 696 |
|
|
(define_insn_reservation "ppro_sse_log_V4SF_load" 2
|
| 697 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 698 |
|
|
(and (eq_attr "memory" "load")
|
| 699 |
|
|
(and (eq_attr "mode" "V4SF")
|
| 700 |
|
|
(eq_attr "type" "sselog,sselog1"))))
|
| 701 |
|
|
"decoder0,(p2+p1)")
|
| 702 |
|
|
|
| 703 |
|
|
(define_insn_reservation "ppro_sse_mov_V4SF" 1
|
| 704 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 705 |
|
|
(and (eq_attr "memory" "none")
|
| 706 |
|
|
(and (eq_attr "mode" "V4SF")
|
| 707 |
|
|
(eq_attr "type" "ssemov"))))
|
| 708 |
|
|
"decoder0,(p0|p1)*2")
|
| 709 |
|
|
|
| 710 |
|
|
(define_insn_reservation "ppro_sse_mov_V4SF_load" 2
|
| 711 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 712 |
|
|
(and (eq_attr "memory" "load")
|
| 713 |
|
|
(and (eq_attr "mode" "V4SF")
|
| 714 |
|
|
(eq_attr "type" "ssemov"))))
|
| 715 |
|
|
"decoder0,p2*2")
|
| 716 |
|
|
|
| 717 |
|
|
(define_insn_reservation "ppro_sse_mov_V4SF_store" 3
|
| 718 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 719 |
|
|
(and (eq_attr "memory" "store")
|
| 720 |
|
|
(and (eq_attr "mode" "V4SF")
|
| 721 |
|
|
(eq_attr "type" "ssemov"))))
|
| 722 |
|
|
"decoder0,(p4+p3)*2")
|
| 723 |
|
|
|
| 724 |
|
|
;; All other instructions are modelled as simple instructions.
|
| 725 |
|
|
;; We have already modelled all i387 floating point instructions, so all
|
| 726 |
|
|
;; other instructions execute on either port 0 or port 1. This includes
|
| 727 |
|
|
;; the ALU units, and the MMX units.
|
| 728 |
|
|
;;
|
| 729 |
|
|
;; reg-reg instructions produce 1 uop so they can be decoded on any of
|
| 730 |
|
|
;; the three decoders.
|
| 731 |
|
|
(define_insn_reservation "ppro_insn" 1
|
| 732 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 733 |
|
|
(and (eq_attr "memory" "none,unknown")
|
| 734 |
|
|
(eq_attr "type" "alu,alu1,negnot,incdec,icmp,test,setcc,icmov,push,pop,fxch,sseiadd,sseishft,sseishft1,sseimul,mmx,mmxadd,mmxcmp")))
|
| 735 |
|
|
"decodern,(p0|p1)")
|
| 736 |
|
|
|
| 737 |
|
|
;; read-modify and register-memory instructions have 2 or three uops,
|
| 738 |
|
|
;; so they have to be decoded on decoder0.
|
| 739 |
|
|
(define_insn_reservation "ppro_insn_load" 3
|
| 740 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 741 |
|
|
(and (eq_attr "memory" "load")
|
| 742 |
|
|
(eq_attr "type" "alu,alu1,negnot,incdec,icmp,test,setcc,icmov,push,pop,fxch,sseiadd,sseishft,sseishft1,sseimul,mmx,mmxadd,mmxcmp")))
|
| 743 |
|
|
"decoder0,p2+(p0|p1)")
|
| 744 |
|
|
|
| 745 |
|
|
(define_insn_reservation "ppro_insn_store" 1
|
| 746 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 747 |
|
|
(and (eq_attr "memory" "store")
|
| 748 |
|
|
(eq_attr "type" "alu,alu1,negnot,incdec,icmp,test,setcc,icmov,push,pop,fxch,sseiadd,sseishft,sseishft1,sseimul,mmx,mmxadd,mmxcmp")))
|
| 749 |
|
|
"decoder0,(p0|p1),p4+p3")
|
| 750 |
|
|
|
| 751 |
|
|
;; read-modify-store instructions produce 4 uops so they have to be
|
| 752 |
|
|
;; decoded on decoder0 as well.
|
| 753 |
|
|
(define_insn_reservation "ppro_insn_both" 4
|
| 754 |
|
|
(and (eq_attr "cpu" "pentiumpro")
|
| 755 |
|
|
(and (eq_attr "memory" "both")
|
| 756 |
|
|
(eq_attr "type" "alu,alu1,negnot,incdec,icmp,test,setcc,icmov,push,pop,fxch,sseiadd,sseishft,sseishft1,sseimul,mmx,mmxadd,mmxcmp")))
|
| 757 |
|
|
"decoder0,p2+(p0|p1),p4+p3")
|
| 758 |
|
|
|
