FEX-Emu/FEX
1
0
Fork 0
mirror of https://github.com/FEX-Emu/FEX.git synced 2025-01-07 14:10:23 +00:00
Code Issues Actions 6 Packages Projects Releases Wiki Activity

IR: track whether parity is read

Browse Source 
so we can gate optimizations efficiently

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
This commit is contained in:
Alyssa Rosenzweig 2024-09-06 10:56:30 -04:00
parent e9ab514962
commit 8745455a5b
2 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
FEXCore/Source/Interface/Core/OpcodeDispatcher/Flags.cpp
View File

@ -179,6 +179,9 @@ void OpDispatchBuilder::CalculateOF(uint8_t SrcSize, Ref Res, Ref Src1, Ref Src2
}
Ref OpDispatchBuilder::LoadPFRaw(bool Mask, bool Invert) {
// Most blocks do not read parity, so PF optimization is gated on this flag.
CurrentHeader->ReadsParity = true;
// Evaluate parity on the deferred raw value.
return _Parity(GetRFLAG(FEXCore::X86State::RFLAG_PF_RAW_LOC), Mask, Invert);
}

2
FEXCore/Source/Interface/IR/IR.json
View File

@ -168,7 +168,7 @@
"SwitchGen": false,
"JITDispatchOverride": "NoOp"
},
"IRHeader SSA:$Blocks, u64:$OriginalRIP, u32:$BlockCount, u32:$NumHostInstructions, i1:$HasX87{false}": {
"IRHeader SSA:$Blocks, u64:$OriginalRIP, u32:$BlockCount, u32:$NumHostInstructions, i1:$HasX87{false}, i1:$ReadsParity{false}": {
"SwitchGen": false,
"JITDispatchOverride": "NoOp"
},