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Merge pull request #3545 from alyssarosenzweig/opt/pf-scalar

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Use scalar integer code to calculate PF
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Alyssa Rosenzweig authored and GitHub committed 2024-04-02 11:28:53 -04:00
2 parents b632f7215c 5c590b9a50
commit bd0b5eceb8
14 files changed
+337 -324
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FEXCore/Source/Interface/Core/OpcodeDispatcher.cpp
+5 -9
View File
@@ -775,24 +775,20 @@ void OpDispatchBuilder::CALLAbsoluteOp(OpcodeArgs) {
_ExitFunction(JMPPCOffset); // If we get here then leave the function now
}
OrderedNode *OpDispatchBuilder::SelectBit(OrderedNode *Cmp, bool TrueIsNonzero, IR::OpSize ResultSize, OrderedNode *TrueValue, OrderedNode *FalseValue) {
OrderedNode *OpDispatchBuilder::SelectBit(OrderedNode *Cmp, IR::OpSize ResultSize, OrderedNode *TrueValue, OrderedNode *FalseValue) {
uint64_t TrueConst, FalseConst;
if (IsValueConstant(WrapNode(TrueValue), &TrueConst) &&
IsValueConstant(WrapNode(FalseValue), &FalseConst) &&
TrueConst == 1 &&
FalseConst == 0) {
if (!TrueIsNonzero)
Cmp = _Not(OpSize::i32Bit, Cmp);
return _And(ResultSize, Cmp, _Constant(1));
}
SaveNZCV();
_TestNZ(OpSize::i32Bit, Cmp, _Constant(1));
return _NZCVSelect(ResultSize,
TrueIsNonzero ? CondClassType{COND_NEQ} : CondClassType{COND_EQ},
TrueValue, FalseValue);
return _NZCVSelect(ResultSize, CondClassType{COND_NEQ},
TrueValue, FalseValue);
}
std::pair<bool, CondClassType> OpDispatchBuilder::DecodeNZCVCondition(uint8_t OP) const {
@@ -857,10 +853,10 @@ OrderedNode *OpDispatchBuilder::SelectCC(uint8_t OP, IR::OpSize ResultSize, Orde
}
case 0xA: { // JP - Jump if PF == 1
// Raw value contains inverted PF in bottom bit
return SelectBit(LoadPFRaw(), false, ResultSize, TrueValue, FalseValue);
return SelectBit(LoadPFRaw(true), ResultSize, TrueValue, FalseValue);
}
case 0xB: { // JNP - Jump if PF == 0
return SelectBit(LoadPFRaw(), true, ResultSize, TrueValue, FalseValue);
return SelectBit(LoadPFRaw(false), ResultSize, TrueValue, FalseValue);
}
default:
LOGMAN_MSG_A_FMT("Unknown CC Op: 0x{:x}\n", OP);