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Optimize out slti in the x86 jit.

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I'm kinda surprised this actually happens...
This commit is contained in:
Unknown W. Brackets 2013-02-20 21:29:50 -08:00
parent abde404c00
commit dede852c03
1 changed files with 13 additions and 0 deletions
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13
Core/MIPS/x86/CompALU.cpp
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@ -91,6 +91,13 @@ namespace MIPSComp
break;
case 10: // R(rt) = (s32)R(rs) < simm; break; //slti
// There's a mips compiler out there asking it already knows the answer to...
if (gpr.IsImmediate(rs))
{
gpr.SetImmediate32(rt, (s32)gpr.GetImmediate32(rs) < simm);
break;
}
gpr.Lock(rt, rs);
gpr.BindToRegister(rs, true, false);
gpr.BindToRegister(rt, rt == rs, true);
@ -102,6 +109,12 @@ namespace MIPSComp
break;
case 11: // R(rt) = R(rs) < uimm; break; //sltiu
if (gpr.IsImmediate(rs))
{
gpr.SetImmediate32(rt, gpr.GetImmediate32(rs) < uimm);
break;
}
gpr.Lock(rt, rs);
gpr.BindToRegister(rs, true, false);
gpr.BindToRegister(rt, rt == rs, true);