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[ARM32] srawix optimization when source is an immediate.

This commit is contained in:
Ryan Houdek 2014-11-29 03:55:53 +00:00
parent fca0fd9dd5
commit 1dbb39f791
1 changed files with 13 additions and 2 deletions
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15
Source/Core/Core/PowerPC/JitArm32/JitArm_Integer.cpp
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@ -1025,9 +1025,19 @@ void JitArm::srawix(UGeckoInstruction inst)
int s = inst.RS;
int amount = inst.SH;
gpr.BindToRegister(a, a == s);
if (amount != 0)
if (gpr.IsImm(s))
{
s32 imm = (s32)gpr.GetImm(s);
gpr.SetImmediate(a, imm >> amount);
if (amount != 0 && (imm < 0) && (imm << (32 - amount)))
ComputeCarry(true);
else
ComputeCarry(false);
}
else if (amount != 0)
{
gpr.BindToRegister(a, a == s);
ARMReg RA = gpr.R(a);
ARMReg RS = gpr.R(s);
ARMReg tmp = gpr.GetReg();
@ -1049,6 +1059,7 @@ void JitArm::srawix(UGeckoInstruction inst)
}
else
{
gpr.BindToRegister(a, a == s);
ARMReg RA = gpr.R(a);
ARMReg RS = gpr.R(s);
MOV(RA, RS);