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BackendX64: ArithmeticShiftRight: Fix incorrect immediate size for SAR

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This commit is contained in:
MerryMage 2016-08-02 12:00:11 +01:00
parent 6097a21955
commit 864081d1a0
1 changed files with 2 additions and 2 deletions
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4
src/backend_x64/emit_x64.cpp
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@ -497,10 +497,10 @@ void EmitX64::EmitArithmeticShiftRight(IR::Block& block, IR::Inst* inst) {
auto shift_arg = inst->GetArg(1);
if (shift_arg.IsImmediate()) {
u32 shift = shift_arg.GetU8();
u8 shift = shift_arg.GetU8();
X64Reg result = reg_alloc.UseDefRegister(inst->GetArg(0), inst);
code->SAR(32, R(result), Imm32(shift < 31 ? shift : 31));
code->SAR(32, R(result), Imm8(shift < 31 ? shift : 31));
} else {
X64Reg shift = reg_alloc.UseScratchRegister(shift_arg.GetInst(), {HostLoc::RCX});
X64Reg result = reg_alloc.UseDefRegister(inst->GetArg(0), inst);