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OpcodeDispatcher: fuse eor+ror in sha256

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This reduces instructions a ton.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
This commit is contained in:
Alyssa Rosenzweig 2024-01-31 16:14:03 -04:00
parent f616beb992
commit 515aa4ce3e
1 changed files with 2 additions and 2 deletions
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4
FEXCore/Source/Interface/Core/OpcodeDispatcher/Crypto.cpp
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@ -237,10 +237,10 @@ void OpDispatchBuilder::SHA256RNDS2Op(OpcodeArgs) {
return _Xor(OpSize::i32Bit, _Xor(OpSize::i32Bit, _And(OpSize::i32Bit, A, B), _And(OpSize::i32Bit, A, C)), _And(OpSize::i32Bit, B, C));
};
const auto Sigma0 = [this](OrderedNode *A) -> OrderedNode* {
return _Xor(OpSize::i32Bit, _Xor(OpSize::i32Bit, _Ror(OpSize::i32Bit, A, _Constant(32, 2)), _Ror(OpSize::i32Bit, A, _Constant(32, 13))), _Ror(OpSize::i32Bit, A, _Constant(32, 22)));
return _XorShift(OpSize::i32Bit, _XorShift(OpSize::i32Bit, _Ror(OpSize::i32Bit, A, _Constant(32, 2)), A, ShiftType::ROR, 13), A, ShiftType::ROR, 22);
};
const auto Sigma1 = [this](OrderedNode *E) -> OrderedNode* {
return _Xor(OpSize::i32Bit, _Xor(OpSize::i32Bit, _Ror(OpSize::i32Bit, E, _Constant(32, 6)), _Ror(OpSize::i32Bit, E, _Constant(32, 11))), _Ror(OpSize::i32Bit, E, _Constant(32, 25)));
return _XorShift(OpSize::i32Bit, _XorShift(OpSize::i32Bit, _Ror(OpSize::i32Bit, E, _Constant(32, 6)), E, ShiftType::ROR, 11), E, ShiftType::ROR, 25);
};
OrderedNode *Dest = LoadSource(FPRClass, Op, Op->Dest, Op->Flags);