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must be called in the pass's constructor. This function uses static dependency declarations to recursively initialize the pass's dependencies. Clients that only create passes through the createFooPass() APIs will require no changes. Clients that want to use the CommandLine options for passes will need to manually call the appropriate initialization functions in PassInitialization.h before parsing commandline arguments. I have tested this with all standard configurations of clang and llvm-gcc on Darwin. It is possible that there are problems with the static dependencies that will only be visible with non-standard options. If you encounter any crash in pass registration/creation, please send the testcase to me directly. llvm-svn: 116820
65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
//===- InstructionNamer.cpp - Give anonymous instructions names -----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This is a little utility pass that gives instructions names, this is mostly
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// useful when diffing the effect of an optimization because deleting an
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// unnamed instruction can change all other instruction numbering, making the
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// diff very noisy.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Transforms/Scalar.h"
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#include "llvm/Function.h"
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#include "llvm/Pass.h"
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#include "llvm/Type.h"
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using namespace llvm;
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namespace {
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struct InstNamer : public FunctionPass {
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static char ID; // Pass identification, replacement for typeid
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InstNamer() : FunctionPass(ID) {
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initializeInstNamerPass(*PassRegistry::getPassRegistry());
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}
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void getAnalysisUsage(AnalysisUsage &Info) const {
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Info.setPreservesAll();
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}
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bool runOnFunction(Function &F) {
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for (Function::arg_iterator AI = F.arg_begin(), AE = F.arg_end();
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AI != AE; ++AI)
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if (!AI->hasName() && !AI->getType()->isVoidTy())
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AI->setName("arg");
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for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB) {
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if (!BB->hasName())
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BB->setName("bb");
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for (BasicBlock::iterator I = BB->begin(), E = BB->end(); I != E; ++I)
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if (!I->hasName() && !I->getType()->isVoidTy())
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I->setName("tmp");
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}
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return true;
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}
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};
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char InstNamer::ID = 0;
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}
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INITIALIZE_PASS(InstNamer, "instnamer",
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"Assign names to anonymous instructions", false, false)
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char &llvm::InstructionNamerID = InstNamer::ID;
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//===----------------------------------------------------------------------===//
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//
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// InstructionNamer - Give any unnamed non-void instructions "tmp" names.
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//
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FunctionPass *llvm::createInstructionNamerPass() {
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return new InstNamer();
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}
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