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SPU LLVM: Add two dependency chains for SPU verification

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- Should restore performance to match the xorsum builds
This commit is contained in:
Malcolm Jestadt 2025-02-11 00:04:25 -05:00 • committed by Elad
parent 3392f0a271
commit dfd83bc7a4
1 changed files with 28 additions and 3 deletions
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31
rpcs3/Emu/Cell/SPULLVMRecompiler.cpp
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@ -1675,7 +1675,9 @@ public:
llvm::Value* starta_pc = m_ir->CreateAnd(get_pc(starta), 0x3fffc);
llvm::Value* data_addr = m_ir->CreateGEP(get_type<u8>(), m_lsptr, starta_pc);
llvm::Value* acc = nullptr;
llvm::Value* acc0 = nullptr;
llvm::Value* acc1 = nullptr;
bool toggle = true;
// Use a 512bit simple checksum to verify integrity if size is atleast 512b * 3
// This code uses a 512bit vector for all hardware to ensure behavior matches.
@ -1721,10 +1723,21 @@ public:
vls = m_ir->CreateShuffleVector(vls, ConstantAggregateZero::get(vls->getType()), llvm::ArrayRef(indices, 16));
}
acc = acc ? m_ir->CreateAdd(acc, vls) : vls;
// Interleave accumulators for more performance
if (toggle)
{
acc0 = acc0 ? m_ir->CreateAdd(acc0, vls) : vls;
}
else
{
acc1 = acc1 ? m_ir->CreateAdd(acc1, vls) : vls;
}
toggle = !toggle;
check_iterations++;
}
llvm::Value* acc = (acc0 && acc1) ? m_ir->CreateAdd(acc0, acc1): (acc0 ? acc0 : acc1);
// Create the checksum
u32 checksum[16] = {0};
@ -1818,9 +1831,21 @@ public:
}
vls = m_ir->CreateXor(vls, ConstantDataVector::get(m_context, llvm::ArrayRef(words, elements)));
acc = acc ? m_ir->CreateOr(acc, vls) : vls;
// Interleave accumulators for more performance
if (toggle)
{
acc0 = acc0 ? m_ir->CreateAdd(acc0, vls) : vls;
}
else
{
acc1 = acc1 ? m_ir->CreateAdd(acc1, vls) : vls;
}
toggle = !toggle;
check_iterations++;
}
llvm::Value* acc = (acc0 && acc1) ? m_ir->CreateAdd(acc0, acc1): (acc0 ? acc0 : acc1);
// Pattern for PTEST
if (m_use_avx512)
{