diff options
Diffstat (limited to 'Source/Core/Common/x64Emitter.cpp')
| -rw-r--r-- | Source/Core/Common/x64Emitter.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Source/Core/Common/x64Emitter.cpp b/Source/Core/Common/x64Emitter.cpp index cc3c51da08..7b46863d16 100644 --- a/Source/Core/Common/x64Emitter.cpp +++ b/Source/Core/Common/x64Emitter.cpp @@ -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) { |