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x86 jit: Add a simple speedhack (ignore masking stack pointers) but disable due to low impact.

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This commit is contained in:
Henrik Rydgard 2014-11-09 14:54:39 +01:00
parent a528921f3c
commit a19d0b648a
1 changed files with 6 additions and 2 deletions
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8
Core/MIPS/x86/JitSafeMem.cpp
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@ -145,9 +145,11 @@ OpArg JitSafeMem::PrepareMemoryOpArg(ReadType type)
{
// We may not even need to move into EAX as a temporary.
bool needTemp = alignMask_ != 0xFFFFFFFF;
#ifdef _M_IX86
bool needMask = true; // raddr_ != MIPS_REG_SP; // Commented out this speedhack due to low impact
// We always mask on 32 bit in fast memory mode.
needTemp = needTemp || fast_;
needTemp = needTemp || (fast_ && needMask);
#endif
if (jit_->gpr.R(raddr_).IsSimpleReg() && !needTemp)
@ -177,7 +179,9 @@ OpArg JitSafeMem::PrepareMemoryOpArg(ReadType type)
else
{
#ifdef _M_IX86
jit_->AND(32, R(EAX), Imm32(Memory::MEMVIEW32_MASK));
if (needMask) {
jit_->AND(32, R(EAX), Imm32(Memory::MEMVIEW32_MASK));
}
#endif
}