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JITIL: compare instruction folding.

This commit is contained in:
magumagu 2014-06-23 22:17:45 -07:00 committed by Pierre Bourdon
parent 5bb428c685
commit c8dd557dde
2 changed files with 54 additions and 1 deletions
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2
Source/Core/Core/PowerPC/Jit64IL/IR_X86.cpp
View File

@ -1721,7 +1721,7 @@ static void DoWriteCode(IRBuilder* ibuild, JitIL* Jit, u32 exitAddress) {
case ICmpNe: flag = CC_E; break;
case ICmpUgt: flag = CC_BE; break;
case ICmpUlt: flag = CC_AE; break;
case ICmpUge: flag = CC_L; break;
case ICmpUge: flag = CC_B; break;
case ICmpUle: flag = CC_A; break;
case ICmpSgt: flag = CC_LE; break;
case ICmpSlt: flag = CC_GE; break;

53
Source/Core/Core/PowerPC/JitILCommon/IR.cpp
View File

@ -356,6 +356,25 @@ InstLoc IRBuilder::FoldUOp(unsigned Opcode, InstLoc Op1, unsigned extra) {
return getOp1(Op1);
}
}
if (Opcode == FastCRGTSet)
{
if (getOpcode(*Op1) == ICmpCRSigned)
return EmitICmpSgt(getOp1(Op1), getOp2(Op1));
if (getOpcode(*Op1) == ICmpCRUnsigned)
return EmitICmpUgt(getOp1(Op1), getOp2(Op1));
}
if (Opcode == FastCRLTSet)
{
if (getOpcode(*Op1) == ICmpCRSigned)
return EmitICmpSlt(getOp1(Op1), getOp2(Op1));
if (getOpcode(*Op1) == ICmpCRUnsigned)
return EmitICmpUlt(getOp1(Op1), getOp2(Op1));
}
if (Opcode == FastCREQSet)
{
if (getOpcode(*Op1) == ICmpCRSigned || getOpcode(*Op1) == ICmpCRUnsigned)
return EmitICmpEq(getOp1(Op1), getOp2(Op1));
}
return EmitUOp(Opcode, Op1, extra);
}
@ -778,6 +797,35 @@ InstLoc IRBuilder::FoldOr(InstLoc Op1, InstLoc Op2) {
return EmitBiOp(Or, Op1, Op2);
}
static unsigned ICmpInverseOp(unsigned op)
{
switch (op)
{
case ICmpEq:
return ICmpNe;
case ICmpNe:
return ICmpEq;
case ICmpUlt:
return ICmpUge;
case ICmpUgt:
return ICmpUle;
case ICmpUle:
return ICmpUgt;
case ICmpUge:
return ICmpUlt;
case ICmpSlt:
return ICmpSge;
case ICmpSgt:
return ICmpSle;
case ICmpSle:
return ICmpSgt;
case ICmpSge:
return ICmpSlt;
}
PanicAlert("Bad opcode");
return Nop;
}
InstLoc IRBuilder::FoldXor(InstLoc Op1, InstLoc Op2) {
simplifyCommutative(Xor, Op1, Op2);
@ -794,6 +842,11 @@ InstLoc IRBuilder::FoldXor(InstLoc Op1, InstLoc Op2) {
GetImmValue(getOp2(Op1));
return FoldXor(getOp1(Op1), EmitIntConst(RHS));
}
if (isICmp(getOpcode(*Op1)) && GetImmValue(Op2) == 1)
{
return FoldBiOp(ICmpInverseOp(getOpcode(*Op1)), getOp1(Op1), getOp2(Op1));
}
}
if (Op1 == Op2) return EmitIntConst(0);