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SPU LLVM: Reduce dot comparison result with addv

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Malcolm 2026-05-30 22:55:17 -04:00 committed by Elad
parent 35f65c2244
commit fa5b899411
1 changed files with 18 additions and 19 deletions
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37
rpcs3/Emu/Cell/SPULLVMRecompiler.cpp
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@ -2140,33 +2140,32 @@ public:
accumulate_pair(pending_cmp, llvm::ConstantInt::get(pending_cmp->getType(), -1, true)); accumulate_pair(pending_cmp, llvm::ConstantInt::get(pending_cmp->getType(), -1, true));
} }
llvm::Value* expected = nullptr;
if (m_use_dotprod) if (m_use_dotprod)
{ {
u32 expected_words[4]; llvm::Value* acc = m_ir->CreateAdd(m_ir->CreateAdd(acc0, acc1), m_ir->CreateAdd(acc2, acc3));
expected_words[0] = expected_hits * 4 * 0xff * 0xff; acc = m_ir->CreateCall(get_intrinsic<u32, u32[4]>(llvm::Intrinsic::aarch64_neon_uaddv), {acc});
expected_words[1] = expected_words[0];
expected_words[2] = expected_words[0]; constexpr u64 dot_match_value = 0xff * 0xff;
expected_words[3] = expected_words[0]; const u32 expected = static_cast<u32>(expected_hits * 16 * dot_match_value);
expected = ConstantDataVector::get(m_context, llvm::ArrayRef(expected_words, 4)); const auto cond = m_ir->CreateICmpNE(acc, m_ir->getInt32(expected));
m_ir->CreateCondBr(cond, label_diff, label_body, m_md_unlikely);
} }
else else
{ {
u16 expected_words[8]; u16 expected_words[8];
std::fill_n(expected_words, 8, static_cast<u16>(expected_hits)); std::fill_n(expected_words, 8, static_cast<u16>(expected_hits));
expected = ConstantDataVector::get(m_context, llvm::ArrayRef(expected_words, 8)); const auto expected = ConstantDataVector::get(m_context, llvm::ArrayRef(expected_words, 8));
llvm::Value* acc = m_ir->CreateAdd(m_ir->CreateAdd(acc0, acc1), m_ir->CreateAdd(acc2, acc3));
acc = m_ir->CreateXor(acc, expected);
acc = m_ir->CreateBitCast(acc, get_type<u64[2]>());
llvm::Value* elem = m_ir->CreateExtractElement(acc, u64{0});
elem = m_ir->CreateOr(elem, m_ir->CreateExtractElement(acc, u64{1}));
const auto cond = m_ir->CreateICmpNE(elem, m_ir->getInt64(0));
m_ir->CreateCondBr(cond, label_diff, label_body, m_md_unlikely);
} }
llvm::Value* acc = m_ir->CreateAdd(m_ir->CreateAdd(acc0, acc1), m_ir->CreateAdd(acc2, acc3));
acc = m_ir->CreateXor(acc, expected);
acc = m_ir->CreateBitCast(acc, get_type<u64[2]>());
llvm::Value* elem = m_ir->CreateExtractElement(acc, u64{0});
elem = m_ir->CreateOr(elem, m_ir->CreateExtractElement(acc, u64{1}));
const auto cond = m_ir->CreateICmpNE(elem, m_ir->getInt64(0));
m_ir->CreateCondBr(cond, label_diff, label_body, m_md_unlikely);
} }
#else #else
else else