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[X86] Add TB_NO_REVERSE to some memory folding table entries where the register form requires 64-bit mode, but the memory form does not. 

We don't know if its safe to unfold if we're in 32-bit mode.

This is simlar to what was done to some load opcodes in r363523.

I think its pretty unlikely we will try to unfold these anyway so
I don't think this is testable.

llvm-svn: 363595
This commit is contained in:
Craig Topper 2019-06-17 18:38:07 +00:00
parent 546006b64e
commit f3f968adcd
1 changed files with 3 additions and 3 deletions
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6
llvm/lib/Target/X86/X86InstrFoldTables.cpp
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@ -307,7 +307,7 @@ static const X86MemoryFoldTableEntry MemoryFoldTable0[] = {
{ X86::MOVDQUrr, X86::MOVDQUmr, TB_FOLDED_STORE },
{ X86::MOVPDI2DIrr, X86::MOVPDI2DImr, TB_FOLDED_STORE },
{ X86::MOVPQIto64rr, X86::MOVPQI2QImr, TB_FOLDED_STORE | TB_NO_REVERSE },
{ X86::MOVSDto64rr, X86::MOVSDto64mr, TB_FOLDED_STORE },
{ X86::MOVSDto64rr, X86::MOVSDto64mr, TB_FOLDED_STORE | TB_NO_REVERSE },
{ X86::MOVSS2DIrr, X86::MOVSS2DImr, TB_FOLDED_STORE },
{ X86::MOVUPDrr, X86::MOVUPDmr, TB_FOLDED_STORE },
{ X86::MOVUPSrr, X86::MOVUPSmr, TB_FOLDED_STORE },
@ -391,8 +391,8 @@ static const X86MemoryFoldTableEntry MemoryFoldTable0[] = {
{ X86::VMOVPDI2DIrr, X86::VMOVPDI2DImr, TB_FOLDED_STORE },
{ X86::VMOVPQIto64Zrr, X86::VMOVPQI2QIZmr, TB_FOLDED_STORE | TB_NO_REVERSE },
{ X86::VMOVPQIto64rr, X86::VMOVPQI2QImr, TB_FOLDED_STORE | TB_NO_REVERSE },
{ X86::VMOVSDto64Zrr, X86::VMOVSDto64Zmr, TB_FOLDED_STORE },
{ X86::VMOVSDto64rr, X86::VMOVSDto64mr, TB_FOLDED_STORE },
{ X86::VMOVSDto64Zrr, X86::VMOVSDto64Zmr, TB_FOLDED_STORE | TB_NO_REVERSE },
{ X86::VMOVSDto64rr, X86::VMOVSDto64mr, TB_FOLDED_STORE | TB_NO_REVERSE },
{ X86::VMOVSS2DIZrr, X86::VMOVSS2DIZmr, TB_FOLDED_STORE },
{ X86::VMOVSS2DIrr, X86::VMOVSS2DImr, TB_FOLDED_STORE },
{ X86::VMOVUPDYrr, X86::VMOVUPDYmr, TB_FOLDED_STORE },