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Don't attempt to SimplifyShortMoveForm in 64-bit mode.

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llvm-svn: 111182
This commit is contained in:
Eli Friedman 2010-08-16 21:03:32 +00:00
parent fb8b05726f
commit b9707bb261
1 changed files with 13 additions and 9 deletions
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22
lib/Target/X86/X86MCInstLower.cpp
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@ -252,7 +252,13 @@ static void SimplifyShortImmForm(MCInst &Inst, unsigned Opcode) {
}
/// \brief Simplify things like MOV32rm to MOV32o32a.
static void SimplifyShortMoveForm(MCInst &Inst, unsigned Opcode) {
static void SimplifyShortMoveForm(X86AsmPrinter &Printer, MCInst &Inst,
unsigned Opcode) {
// Don't make these simplifications in 64-bit mode; other assemblers don't
// perform them because they make the code larger.
if (Printer.getSubtarget().is64Bit())
return;
bool IsStore = Inst.getOperand(0).isReg() && Inst.getOperand(1).isReg();
unsigned AddrBase = IsStore;
unsigned RegOp = IsStore ? 0 : 5;
@ -458,15 +464,13 @@ void X86MCInstLower::Lower(const MachineInstr *MI, MCInst &OutMI) const {
// MOV64ao8, MOV64o8a
// XCHG16ar, XCHG32ar, XCHG64ar
case X86::MOV8mr_NOREX:
case X86::MOV8mr: SimplifyShortMoveForm(OutMI, X86::MOV8ao8); break;
case X86::MOV8mr: SimplifyShortMoveForm(AsmPrinter, OutMI, X86::MOV8ao8); break;
case X86::MOV8rm_NOREX:
case X86::MOV8rm: SimplifyShortMoveForm(OutMI, X86::MOV8o8a); break;
case X86::MOV16mr: SimplifyShortMoveForm(OutMI, X86::MOV16ao16); break;
case X86::MOV16rm: SimplifyShortMoveForm(OutMI, X86::MOV16o16a); break;
case X86::MOV32mr: SimplifyShortMoveForm(OutMI, X86::MOV32ao32); break;
case X86::MOV32rm: SimplifyShortMoveForm(OutMI, X86::MOV32o32a); break;
case X86::MOV64mr: SimplifyShortMoveForm(OutMI, X86::MOV64ao64); break;
case X86::MOV64rm: SimplifyShortMoveForm(OutMI, X86::MOV64o64a); break;
case X86::MOV8rm: SimplifyShortMoveForm(AsmPrinter, OutMI, X86::MOV8o8a); break;
case X86::MOV16mr: SimplifyShortMoveForm(AsmPrinter, OutMI, X86::MOV16ao16); break;
case X86::MOV16rm: SimplifyShortMoveForm(AsmPrinter, OutMI, X86::MOV16o16a); break;
case X86::MOV32mr: SimplifyShortMoveForm(AsmPrinter, OutMI, X86::MOV32ao32); break;
case X86::MOV32rm: SimplifyShortMoveForm(AsmPrinter, OutMI, X86::MOV32o32a); break;
case X86::ADC8ri: SimplifyShortImmForm(OutMI, X86::ADC8i8); break;
case X86::ADC16ri: SimplifyShortImmForm(OutMI, X86::ADC16i16); break;