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remove unnecessary push/pop from 64-bit build (IR.cpp) 

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@2271 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
hrydgard 2009-02-16 01:00:08 +00:00
parent 55b7e79d49
commit daf11ee708
1 changed files with 7 additions and 2 deletions
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9
Source/Core/Core/Src/PowerPC/Jit64IL/IR.cpp
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@ -1072,7 +1072,7 @@ static void regEmitMemLoad(RegInfo& RI, InstLoc I, unsigned Size) {
if (regReadUse(RI, I))
RI.regs[reg] = I;
return;
}
}
}
X64Reg reg;
OpArg addr = regBuildMemAddress(RI, I, getOp1(I), 1, Size, &reg, false);
@ -1082,18 +1082,23 @@ static void regEmitMemLoad(RegInfo& RI, InstLoc I, unsigned Size) {
}
RI.Jit->TEST(32, R(ECX), Imm32(0x0C000000));
FixupBranch argh = RI.Jit->J_CC(CC_Z);
if (reg != EAX)
#ifdef _M_IX86 // we don't allocate EAX on x64 so no reason to save it.
if (reg != EAX) {
RI.Jit->PUSH(32, R(EAX));
}
#endif
switch (Size)
{
case 32: RI.Jit->ABI_CallFunctionR(thunks.ProtectFunction((void *)&Memory::Read_U32, 1), ECX); break;
case 16: RI.Jit->ABI_CallFunctionR(thunks.ProtectFunction((void *)&Memory::Read_U16, 1), ECX); break;
case 8: RI.Jit->ABI_CallFunctionR(thunks.ProtectFunction((void *)&Memory::Read_U8, 1), ECX); break;
}
#ifdef _M_IX86
if (reg != EAX) {
RI.Jit->MOV(32, R(reg), R(EAX));
RI.Jit->POP(32, R(EAX));
}
#endif
FixupBranch arg2 = RI.Jit->J();
RI.Jit->SetJumpTarget(argh);
RI.Jit->UnsafeLoadRegToReg(ECX, reg, Size, 0, false);