1 //===- SandboxVectorizer.cpp - Vectorizer based on Sandbox IR -------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "llvm/Transforms/Vectorize/SandboxVectorizer/SandboxVectorizer.h" 10 #include "llvm/Analysis/TargetTransformInfo.h" 11 #include "llvm/SandboxIR/PassManager.h" 12 #include "llvm/SandboxIR/SandboxIR.h" 13 #include "llvm/Support/CommandLine.h" 14 #include "llvm/Transforms/Vectorize/SandboxVectorizer/Passes/BottomUpVec.h" 15 16 using namespace llvm; 17 18 #define SV_NAME "sandbox-vectorizer" 19 #define DEBUG_TYPE SV_NAME 20 21 cl::opt<bool> 22 PrintPassPipeline("sbvec-print-pass-pipeline", cl::init(false), cl::Hidden, 23 cl::desc("Prints the pass pipeline and returns.")); 24 25 PreservedAnalyses SandboxVectorizerPass::run(Function &F, 26 FunctionAnalysisManager &AM) { 27 TTI = &AM.getResult<TargetIRAnalysis>(F); 28 29 bool Changed = runImpl(F); 30 if (!Changed) 31 return PreservedAnalyses::all(); 32 33 PreservedAnalyses PA; 34 PA.preserveSet<CFGAnalyses>(); 35 return PA; 36 } 37 38 bool SandboxVectorizerPass::runImpl(Function &LLVMF) { 39 // If the target claims to have no vector registers early return. 40 if (!TTI->getNumberOfRegisters(TTI->getRegisterClassForType(true))) { 41 LLVM_DEBUG(dbgs() << "SBVec: Target has no vector registers, return.\n"); 42 return false; 43 } 44 LLVM_DEBUG(dbgs() << "SBVec: Analyzing " << LLVMF.getName() << ".\n"); 45 // Early return if the attribute NoImplicitFloat is used. 46 if (LLVMF.hasFnAttribute(Attribute::NoImplicitFloat)) { 47 LLVM_DEBUG(dbgs() << "SBVec: NoImplicitFloat attribute, return.\n"); 48 return false; 49 } 50 51 sandboxir::Context Ctx(LLVMF.getContext()); 52 // Create SandboxIR for `LLVMF`. 53 sandboxir::Function &F = *Ctx.createFunction(&LLVMF); 54 // Create the passes and register them with the PassRegistry. 55 sandboxir::PassRegistry PR; 56 auto &PM = static_cast<sandboxir::FunctionPassManager &>( 57 PR.registerPass(std::make_unique<sandboxir::FunctionPassManager>("pm"))); 58 auto &BottomUpVecPass = static_cast<sandboxir::FunctionPass &>( 59 PR.registerPass(std::make_unique<sandboxir::BottomUpVec>())); 60 61 // Create the default pass pipeline. 62 PM.addPass(&BottomUpVecPass); 63 64 if (PrintPassPipeline) { 65 PM.printPipeline(outs()); 66 return false; 67 } 68 69 // Run the pass pipeline. 70 bool Change = PM.runOnFunction(F); 71 return Change; 72 } 73