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Add function to emit CMP, or TEST when possible

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Also, a spelling mistake.
This commit is contained in:
Sintendo 2015-02-21 11:12:03 +01:00
commit c19482c9a3
4 changed files with 16 additions and 2 deletions
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12
Source/Core/Common/x64Emitter.cpp
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@ -1278,6 +1278,18 @@ void XEmitter::MOV (int bits, const OpArg &a1, const OpArg &a2)
void XEmitter::TEST(int bits, const OpArg &a1, const OpArg &a2) {CheckFlags(); WriteNormalOp(bits, nrmTEST, a1, a2);}
void XEmitter::CMP (int bits, const OpArg &a1, const OpArg &a2) {CheckFlags(); WriteNormalOp(bits, nrmCMP, a1, a2);}
void XEmitter::XCHG(int bits, const OpArg &a1, const OpArg &a2) {WriteNormalOp(bits, nrmXCHG, a1, a2);}
void XEmitter::CMP_or_TEST(int bits, const OpArg &a1, const OpArg &a2)
{
CheckFlags();
if (a1.IsSimpleReg() && a2.IsImm() && a2.offset == 0) // turn 'CMP reg, 0' into shorter 'TEST reg, reg'
{
WriteNormalOp(bits, nrmTEST, a1, a1);
}
else
{
WriteNormalOp(bits, nrmCMP, a1, a2);
}
}
void XEmitter::IMUL(int bits, X64Reg regOp, OpArg a1, OpArg a2)
{