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EmitX64: Correct EmitPack2x32To1x64 implementation

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This commit is contained in:
MerryMage 2016-08-05 18:41:25 +01:00
parent 742eeb8913
commit 4c0a85f3b3
1 changed files with 6 additions and 6 deletions
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12
src/backend_x64/emit_x64.cpp
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@ -278,14 +278,14 @@ void EmitX64::EmitGetOverflowFromOp(IR::Block&, IR::Inst*) {
}
void EmitX64::EmitPack2x32To1x64(IR::Block&, IR::Inst* inst) {
OpArg hi;
OpArg lo;
X64Reg result;
std::tie(hi, result) = reg_alloc.UseDefOpArg(inst->GetArg(1), inst, any_gpr);
OpArg lo = reg_alloc.UseOpArg(inst->GetArg(0), any_gpr);
std::tie(lo, result) = reg_alloc.UseDefOpArg(inst->GetArg(0), inst, any_gpr);
X64Reg hi = reg_alloc.UseScratchRegister(inst->GetArg(1), any_gpr);
code->MOVZX(64, 32, result, hi);
code->SHL(64, R(result), Imm8(32));
code->OR(64, R(result), lo);
code->SHL(64, R(hi), Imm8(32));
code->MOVZX(64, 32, result, lo);
code->OR(64, R(result), R(hi));
}
void EmitX64::EmitLeastSignificantWord(IR::Block&, IR::Inst* inst) {