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CondJump/Arm64: Use cbnz/cbz if faster

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Stefanos Kornilios Mitsis Poiitidis committed 2020-11-06 10:54:52 +02:00
1 parent 709f5cd925
commit f9f80b77e5
1 file changed
+14 -9
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External/FEXCore/Source/Interface/Core/JIT/Arm64/BranchOps.cpp
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+14 -9
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@@ -113,16 +113,21 @@ DEF_OP(CondJump) {
TrueTargetLabel = &TrueIter->second;
}
if (Op->Header.Args[1].IsInvalid()) {
cbnz(GetReg<RA_64>(Op->Header.Args[0].ID()), TrueTargetLabel);
} else {
uint64_t Const;
if (IsInlineConstant(Op->Header.Args[1], &Const))
cmp(GRCMP(Op->Header.Args[0].ID()), Const);
else
cmp(GRCMP(Op->Header.Args[0].ID()), GRCMP(Op->Header.Args[1].ID()));
b(TrueTargetLabel, MapBranchCC(Op->Operation));
uint64_t Const;
bool isConst = IsInlineConstant(Op->Cmp2, &Const);
if (isConst && Const == 0 && Op->Operation.Val == FEXCore::IR::COND_EQ) {
cbz(GRCMP(Op->Cmp1.ID()), TrueTargetLabel);
} else if (isConst && Const == 0 && Op->Operation.Val == FEXCore::IR::COND_NEQ) {
cbnz(GRCMP(Op->Cmp1.ID()), TrueTargetLabel);
} else {
if (isConst)
cmp(GRCMP(Op->Cmp1.ID()), Const);
else
cmp(GRCMP(Op->Cmp1.ID()), GRCMP(Op->Cmp2.ID()));
b(TrueTargetLabel, MapBranchCC(Op->Operation));
}
if (FalseIter == JumpTargets.end()) {