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Mark MOVDQ(A/U)rm as ReMaterializable. Mark all MOVDQ(A/U) instructions as neverHasSideEffects.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169477 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Craig Topper 2012-12-06 06:49:16 +00:00
parent 824ec7d01a
commit ab69b25f4b
2 changed files with 9 additions and 4 deletions
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3
lib/Target/X86/X86InstrInfo.cpp
View File

@ -1551,16 +1551,19 @@ X86InstrInfo::isReallyTriviallyReMaterializable(const MachineInstr *MI,
case X86::MOVUPSrm:
case X86::MOVAPDrm:
case X86::MOVDQArm:
case X86::MOVDQUrm:
case X86::VMOVSSrm:
case X86::VMOVSDrm:
case X86::VMOVAPSrm:
case X86::VMOVUPSrm:
case X86::VMOVAPDrm:
case X86::VMOVDQArm:
case X86::VMOVDQUrm:
case X86::VMOVAPSYrm:
case X86::VMOVUPSYrm:
case X86::VMOVAPDYrm:
case X86::VMOVDQAYrm:
case X86::VMOVDQUYrm:
case X86::MMX_MOVD64rm:
case X86::MMX_MOVQ64rm:
case X86::FsVMOVAPSrm:

10
lib/Target/X86/X86InstrSSE.td
View File

@ -3499,13 +3499,13 @@ def VMOVDQArr : VPDI<0x6F, MRMSrcReg, (outs VR128:$dst), (ins VR128:$src),
def VMOVDQAYrr : VPDI<0x6F, MRMSrcReg, (outs VR256:$dst), (ins VR256:$src),
"movdqa\t{$src, $dst|$dst, $src}", [], IIC_SSE_MOVA_P_RR>,
VEX, VEX_L;
}
def VMOVDQUrr : VSSI<0x6F, MRMSrcReg, (outs VR128:$dst), (ins VR128:$src),
"movdqu\t{$src, $dst|$dst, $src}", [], IIC_SSE_MOVU_P_RR>,
VEX;
def VMOVDQUYrr : VSSI<0x6F, MRMSrcReg, (outs VR256:$dst), (ins VR256:$src),
"movdqu\t{$src, $dst|$dst, $src}", [], IIC_SSE_MOVU_P_RR>,
VEX, VEX_L;
}
// For Disassembler
let isCodeGenOnly = 1 in {
@ -3525,7 +3525,8 @@ def VMOVDQUYrr_REV : VSSI<0x7F, MRMDestReg, (outs VR256:$dst), (ins VR256:$src),
IIC_SSE_MOVU_P_RR>, VEX, VEX_L;
}
let canFoldAsLoad = 1, mayLoad = 1 in {
let canFoldAsLoad = 1, mayLoad = 1, isReMaterializable = 1,
neverHasSideEffects = 1 in {
def VMOVDQArm : VPDI<0x6F, MRMSrcMem, (outs VR128:$dst), (ins i128mem:$src),
"movdqa\t{$src, $dst|$dst, $src}", [], IIC_SSE_MOVA_P_RM>,
VEX;
@ -3542,7 +3543,7 @@ let Predicates = [HasAVX] in {
}
}
let mayStore = 1 in {
let mayStore = 1, neverHasSideEffects = 1 in {
def VMOVDQAmr : VPDI<0x7F, MRMDestMem, (outs),
(ins i128mem:$dst, VR128:$src),
"movdqa\t{$src, $dst|$dst, $src}", [], IIC_SSE_MOVA_P_MR>,
@ -3580,7 +3581,8 @@ def MOVDQUrr_REV : I<0x7F, MRMDestReg, (outs VR128:$dst), (ins VR128:$src),
[], IIC_SSE_MOVU_P_RR>, XS, Requires<[UseSSE2]>;
}
let canFoldAsLoad = 1, mayLoad = 1 in {
let canFoldAsLoad = 1, mayLoad = 1, isReMaterializable = 1,
neverHasSideEffects = 1 in {
def MOVDQArm : PDI<0x6F, MRMSrcMem, (outs VR128:$dst), (ins i128mem:$src),
"movdqa\t{$src, $dst|$dst, $src}",
[/*(set VR128:$dst, (alignedloadv2i64 addr:$src))*/],