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[SandboxIR][Bench] Test RAUW #107440

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Sep 5, 2024
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[SandboxIR][Bench] Test RAUW #107440

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30 changes: 30 additions & 0 deletions llvm/benchmarks/SandboxIRBench.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -106,10 +106,40 @@ template <IR IRTy> static void GetType(benchmark::State &State) {
benchmark::DoNotOptimize(I->getType());
}

static std::string generateRAUWIR(unsigned Size) {
std::stringstream SS;
SS << "define void @foo(i32 %v1, i32 %v2) {\n";
SS << " %def1 = add i32 %v1, %v2\n";
SS << " %def2 = add i32 %v1, %v2\n";
for (auto Cnt : seq<unsigned>(0, Size))
SS << " %add" << Cnt << " = add i32 %def1, %def1\n";
SS << "ret void";
SS << "}";
return SS.str();
}

template <IR IRTy> static void RAUW(benchmark::State &State) {
LLVMContext LLVMCtx;
sandboxir::Context Ctx(LLVMCtx);
std::unique_ptr<llvm::Module> LLVMM;
unsigned NumInstrs = State.range(0);
auto *BB = genIR<IRTy>(LLVMM, LLVMCtx, Ctx, generateRAUWIR, NumInstrs);
auto It = BB->begin();
auto *Def1 = &*It++;
auto *Def2 = &*It++;
for (auto _ : State) {
Def1->replaceAllUsesWith(Def2);
Def2->replaceAllUsesWith(Def1);
}
}

BENCHMARK(GetType<IR::LLVM>);
BENCHMARK(GetType<IR::SBox>);

BENCHMARK(BBWalk<IR::LLVM>)->Args({1024});
BENCHMARK(BBWalk<IR::SBox>)->Args({1024});

BENCHMARK(RAUW<IR::LLVM>)->Args({512});
BENCHMARK(RAUW<IR::SBox>)->Args({512});

BENCHMARK_MAIN();