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remove explicit sets of 'neverHasSideEffects' that can now be

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inferred from the instr patterns.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45824 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2008-01-10 05:45:39 +00:00
parent 214884ba03
commit dd41527a7d
6 changed files with 12 additions and 13 deletions
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2
lib/Target/PowerPC/PPCInstrInfo.td
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@ -695,7 +695,7 @@ def SUBFIC : DForm_2< 8, (outs GPRC:$rD), (ins GPRC:$rA, s16imm:$imm),
"subfic $rD, $rA, $imm", IntGeneral,
[(set GPRC:$rD, (subc immSExt16:$imm, GPRC:$rA))]>;
let isReMaterializable = 1, neverHasSideEffects = 1 in {
let isReMaterializable = 1 in {
def LI : DForm_2_r0<14, (outs GPRC:$rD), (ins symbolLo:$imm),
"li $rD, $imm", IntGeneral,
[(set GPRC:$rD, immSExt16:$imm)]>;

2
lib/Target/X86/X86InstrFPStack.td
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@ -466,7 +466,7 @@ def ST_FPrr : FPI<0xD8, AddRegFrm, (outs), (ins RST:$op), "fstp\t$op">, DD;
def XCH_F : FPI<0xC8, AddRegFrm, (outs), (ins RST:$op), "fxch\t$op">, D9;
// Floating point constant loads.
let isReMaterializable = 1, neverHasSideEffects = 1 in {
let isReMaterializable = 1 in {
def LD_Fp032 : FpIf32<(outs RFP32:$dst), (ins), ZeroArgFP,
[(set RFP32:$dst, fpimm0)]>;
def LD_Fp132 : FpIf32<(outs RFP32:$dst), (ins), ZeroArgFP,

4
lib/Target/X86/X86InstrInfo.td
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@ -566,7 +566,7 @@ def MOV16rr : I<0x89, MRMDestReg, (outs GR16:$dst), (ins GR16:$src),
"mov{w}\t{$src, $dst|$dst, $src}", []>, OpSize;
def MOV32rr : I<0x89, MRMDestReg, (outs GR32:$dst), (ins GR32:$src),
"mov{l}\t{$src, $dst|$dst, $src}", []>;
let isReMaterializable = 1, neverHasSideEffects = 1 in {
let isReMaterializable = 1 in {
def MOV8ri : Ii8 <0xB0, AddRegFrm, (outs GR8 :$dst), (ins i8imm :$src),
"mov{b}\t{$src, $dst|$dst, $src}",
[(set GR8:$dst, imm:$src)]>;
@ -2466,7 +2466,7 @@ def CDQ : I<0x99, RawFrm, (outs), (ins),
// Alias instructions that map movr0 to xor.
// FIXME: remove when we can teach regalloc that xor reg, reg is ok.
let Defs = [EFLAGS], isReMaterializable = 1, neverHasSideEffects = 1 in {
let Defs = [EFLAGS], isReMaterializable = 1 in {
def MOV8r0 : I<0x30, MRMInitReg, (outs GR8 :$dst), (ins),
"xor{b}\t$dst, $dst",
[(set GR8:$dst, 0)]>;

2
lib/Target/X86/X86InstrMMX.td
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@ -487,7 +487,7 @@ def MMX_MASKMOVQ : MMXI<0xF7, MRMDestMem, (outs), (ins VR64:$src, VR64:$mask),
//===----------------------------------------------------------------------===//
// Alias instructions that map zero vector to pxor.
let isReMaterializable = 1, neverHasSideEffects = 1 in {
let isReMaterializable = 1 in {
def MMX_V_SET0 : MMXI<0xEF, MRMInitReg, (outs VR64:$dst), (ins),
"pxor\t$dst, $dst",
[(set VR64:$dst, (v2i32 immAllZerosV))]>;

8
lib/Target/X86/X86InstrSSE.td
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@ -445,7 +445,7 @@ def Int_COMISSrm: PSI<0x2F, MRMSrcMem, (outs),
// start with 'Fs'.
// Alias instructions that map fld0 to pxor for sse.
let isReMaterializable = 1, neverHasSideEffects = 1 in
let isReMaterializable = 1 in
def FsFLD0SS : I<0xEF, MRMInitReg, (outs FR32:$dst), (ins),
"pxor\t$dst, $dst", [(set FR32:$dst, fp32imm0)]>,
Requires<[HasSSE1]>, TB, OpSize;
@ -940,7 +940,7 @@ def STMXCSR : PSI<0xAE, MRM3m, (outs), (ins i32mem:$dst),
"stmxcsr\t$dst", [(int_x86_sse_stmxcsr addr:$dst)]>;
// Alias instructions that map zero vector to pxor / xorp* for sse.
let isReMaterializable = 1, neverHasSideEffects = 1 in
let isReMaterializable = 1 in
def V_SET0 : PSI<0x57, MRMInitReg, (outs VR128:$dst), (ins),
"xorps\t$dst, $dst",
[(set VR128:$dst, (v4i32 immAllZerosV))]>;
@ -1141,7 +1141,7 @@ def Int_COMISDrm: PDI<0x2F, MRMSrcMem, (outs), (ins VR128:$src1, f128mem:$src2),
// start with 'Fs'.
// Alias instructions that map fld0 to pxor for sse.
let isReMaterializable = 1, neverHasSideEffects = 1 in
let isReMaterializable = 1 in
def FsFLD0SD : I<0xEF, MRMInitReg, (outs FR64:$dst), (ins),
"pxor\t$dst, $dst", [(set FR64:$dst, fpimm0)]>,
Requires<[HasSSE2]>, TB, OpSize;
@ -2119,7 +2119,7 @@ def MFENCE : I<0xAE, MRM6m, (outs), (ins),
// Alias instructions that map zero vector to pxor / xorp* for sse.
let isReMaterializable = 1, neverHasSideEffects = 1 in
let isReMaterializable = 1 in
def V_SETALLONES : PDI<0x76, MRMInitReg, (outs VR128:$dst), (ins),
"pcmpeqd\t$dst, $dst",
[(set VR128:$dst, (v4i32 immAllOnesV))]>;

7
lib/Target/X86/X86InstrX86-64.td
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@ -201,7 +201,7 @@ def REP_STOSQ : RI<0xAB, RawFrm, (outs), (ins), "{rep;stosq|rep stosq}",
def MOV64rr : RI<0x89, MRMDestReg, (outs GR64:$dst), (ins GR64:$src),
"mov{q}\t{$src, $dst|$dst, $src}", []>;
let isReMaterializable = 1, neverHasSideEffects = 1 in {
let isReMaterializable = 1 in {
def MOV64ri : RIi64<0xB8, AddRegFrm, (outs GR64:$dst), (ins i64imm:$src),
"movabs{q}\t{$src, $dst|$dst, $src}",
[(set GR64:$dst, imm:$src)]>;
@ -1105,14 +1105,13 @@ def PsMOVZX64rm32: I<0x8B, MRMSrcMem, (outs GR64:$dst), (ins i32mem:$src),
// FIXME: remove when we can teach regalloc that xor reg, reg is ok.
// FIXME: AddedComplexity gives MOV64r0 a higher priority than MOV64ri32. Remove
// when we have a better way to specify isel priority.
let Defs = [EFLAGS], AddedComplexity = 1, isReMaterializable = 1,
neverHasSideEffects = 1 in
let Defs = [EFLAGS], AddedComplexity = 1, isReMaterializable = 1 in
def MOV64r0 : RI<0x31, MRMInitReg, (outs GR64:$dst), (ins),
"xor{l}\t${dst:subreg32}, ${dst:subreg32}",
[(set GR64:$dst, 0)]>;
// Materialize i64 constant where top 32-bits are zero.
let AddedComplexity = 1, isReMaterializable = 1, neverHasSideEffects = 1 in
let AddedComplexity = 1, isReMaterializable = 1 in
def MOV64ri64i32 : Ii32<0xB8, AddRegFrm, (outs GR64:$dst), (ins i64i32imm:$src),
"mov{l}\t{$src, ${dst:subreg32}|${dst:subreg32}, $src}",
[(set GR64:$dst, i64immZExt32:$src)]>;