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JitArm64: subfic - Conditionally skip temp reg allocation

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This commit is contained in:
Bram Speeckaert 2024-05-04 17:20:18 +02:00
parent 2c91367429
commit 5d647251f7
1 changed files with 8 additions and 4 deletions
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12
Source/Core/Core/PowerPC/JitArm64/JitArm64_Integer.cpp
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@ -1392,13 +1392,17 @@ void JitArm64::subfic(UGeckoInstruction inst)
}
else
{
gpr.BindToRegister(d, d == a);
const bool allocate_reg = d == a;
gpr.BindToRegister(d, allocate_reg);
// d = imm - a
ARM64Reg WA = gpr.GetReg();
ARM64Reg RD = gpr.R(d);
ARM64Reg WA = allocate_reg ? gpr.GetReg() : RD;
MOVI2R(WA, imm);
CARRY_IF_NEEDED(SUB, SUBS, gpr.R(d), WA, gpr.R(a));
gpr.Unlock(WA);
CARRY_IF_NEEDED(SUB, SUBS, RD, WA, gpr.R(a));
if (allocate_reg)
gpr.Unlock(WA);
ComputeCarry();
}