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LLVM DSL: reimplement pshufb, add 'calli'

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Implement postponed custom intrinsic replacement.
Make bitcast operator static like other ones.
This commit is contained in:
Nekotekina 2021-09-03 12:21:05 +03:00
parent 86ead1b93b
commit 4b8ee85995
4 changed files with 345 additions and 189 deletions
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62
rpcs3/Emu/CPU/CPUTranslator.cpp
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@ -12,6 +12,43 @@ cpu_translator::cpu_translator(llvm::Module* _module, bool is_be)
, m_module(_module)
, m_is_be(is_be)
{
register_intrinsic("x86_pshufb", [&](llvm::CallInst* ci) -> llvm::Value*
{
const auto data0 = ci->getOperand(0);
const auto index = ci->getOperand(1);
const auto zeros = llvm::ConstantAggregateZero::get(get_type<u8[16]>());
if (m_use_ssse3)
{
return m_ir->CreateCall(get_intrinsic(llvm::Intrinsic::x86_ssse3_pshuf_b_128), {data0, index});
}
else
{
// Emulate PSHUFB (TODO)
const auto mask = m_ir->CreateAnd(index, 0xf);
const auto loop = llvm::BasicBlock::Create(m_context, "", m_ir->GetInsertBlock()->getParent());
const auto prev = ci->getParent();
const auto next = prev->splitBasicBlock(ci->getNextNode());
llvm::cast<llvm::BranchInst>(m_ir->GetInsertBlock()->getTerminator())->setOperand(0, loop);
llvm::Value* result;
//m_ir->CreateBr(loop);
m_ir->SetInsertPoint(loop);
const auto i = m_ir->CreatePHI(get_type<u32>(), 2);
const auto v = m_ir->CreatePHI(get_type<u8[16]>(), 2);
i->addIncoming(m_ir->getInt32(0), prev);
i->addIncoming(m_ir->CreateAdd(i, m_ir->getInt32(1)), loop);
v->addIncoming(zeros, prev);
result = m_ir->CreateInsertElement(v, m_ir->CreateExtractElement(data0, m_ir->CreateExtractElement(mask, i)), i);
v->addIncoming(result, loop);
m_ir->CreateCondBr(m_ir->CreateICmpULT(i, m_ir->getInt32(16)), loop, next);
m_ir->SetInsertPoint(next->getFirstNonPHI());
result = m_ir->CreateSelect(m_ir->CreateICmpSLT(index, zeros), zeros, result);
return result;
}
});
}
void cpu_translator::initialize(llvm::LLVMContext& context, llvm::ExecutionEngine& engine)
@ -250,4 +287,29 @@ llvm::Constant* cpu_translator::make_const_vector<v128>(v128 v, llvm::Type* t, u
fmt::throw_exception("[line %u] No supported constant type", _line);
}
void cpu_translator::replace_intrinsics(llvm::Function& f)
{
for (auto& bb : f)
{
for (auto bit = bb.begin(); bit != bb.end();)
{
if (auto ci = llvm::dyn_cast<llvm::CallInst>(&*bit))
{
if (auto cf = ci->getCalledFunction())
{
if (auto it = m_intrinsics.find(std::string_view(cf->getName().data(), cf->getName().size())); it != m_intrinsics.end())
{
m_ir->SetInsertPoint(ci);
ci->replaceAllUsesWith(it->second(ci));
bit = ci->eraseFromParent();
continue;
}
}
}
++bit;
}
}
}
#endif

460
rpcs3/Emu/CPU/CPUTranslator.h
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File diff suppressed because it is too large Load Diff

1
rpcs3/Emu/Cell/PPUTranslator.cpp
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@ -262,6 +262,7 @@ Function* PPUTranslator::Translate(const ppu_function& info)
}
}
replace_intrinsics(*m_function);
return m_function;
}

11
rpcs3/Emu/Cell/SPURecompiler.cpp
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@ -4908,6 +4908,11 @@ public:
pm.add(createAggressiveDCEPass());
//pm.add(createLintPass()); // Check
for (auto& f : *m_module)
{
replace_intrinsics(f);
}
for (const auto& func : m_functions)
{
const auto f = func.second.fn ? func.second.fn : func.second.chunk;
@ -5376,6 +5381,12 @@ public:
pm.add(createAggressiveDCEPass());
//pm.add(createLintPass());
for (auto& f : *_module)
{
replace_intrinsics(f);
//pm.run(f);
}
std::string log;
raw_string_ostream out(log);