| //===- InstructionNamer.cpp - Give anonymous instructions names -----------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This is a little utility pass that gives instructions names, this is mostly |
| // useful when diffing the effect of an optimization because deleting an |
| // unnamed instruction can change all other instruction numbering, making the |
| // diff very noisy. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/Transforms/Scalar.h" |
| #include "llvm/Function.h" |
| #include "llvm/Pass.h" |
| #include "llvm/Type.h" |
| using namespace llvm; |
| |
| namespace { |
| struct InstNamer : public FunctionPass { |
| static char ID; // Pass identification, replacement for typeid |
| InstNamer() : FunctionPass(&ID) {} |
| |
| bool runOnFunction(Function &F) { |
| for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB) |
| for (BasicBlock::iterator I = BB->begin(), E = BB->end(); I != E; ++I) |
| if (!I->hasName() && I->getType() != Type::VoidTy) |
| I->setName("tmp"); |
| return true; |
| } |
| }; |
| |
| char InstNamer::ID = 0; |
| static RegisterPass<InstNamer> X("instnamer", |
| "Assign names to anonymous instructions"); |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // |
| // InstructionNamer - Give any unnamed non-void instructions "tmp" names. |
| // |
| FunctionPass *llvm::createInstructionNamerPass() { |
| return new InstNamer(); |
| } |