64 lines
2.0 KiB
C++
64 lines
2.0 KiB
C++
//===- InstructionNamer.cpp - Give anonymous instructions names -----------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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/IR/Function.h"
|
|
#include "llvm/IR/Type.h"
|
|
#include "llvm/InitializePasses.h"
|
|
#include "llvm/Pass.h"
|
|
#include "llvm/Transforms/Utils.h"
|
|
using namespace llvm;
|
|
|
|
namespace {
|
|
struct InstNamer : public FunctionPass {
|
|
static char ID; // Pass identification, replacement for typeid
|
|
InstNamer() : FunctionPass(ID) {
|
|
initializeInstNamerPass(*PassRegistry::getPassRegistry());
|
|
}
|
|
|
|
void getAnalysisUsage(AnalysisUsage &Info) const override {
|
|
Info.setPreservesAll();
|
|
}
|
|
|
|
bool runOnFunction(Function &F) override {
|
|
for (auto &Arg : F.args())
|
|
if (!Arg.hasName())
|
|
Arg.setName("arg");
|
|
|
|
for (BasicBlock &BB : F) {
|
|
if (!BB.hasName())
|
|
BB.setName("bb");
|
|
|
|
for (Instruction &I : BB)
|
|
if (!I.hasName() && !I.getType()->isVoidTy())
|
|
I.setName("tmp");
|
|
}
|
|
return true;
|
|
}
|
|
};
|
|
|
|
char InstNamer::ID = 0;
|
|
}
|
|
|
|
INITIALIZE_PASS(InstNamer, "instnamer",
|
|
"Assign names to anonymous instructions", false, false)
|
|
char &llvm::InstructionNamerID = InstNamer::ID;
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// InstructionNamer - Give any unnamed non-void instructions "tmp" names.
|
|
//
|
|
FunctionPass *llvm::createInstructionNamerPass() {
|
|
return new InstNamer();
|
|
}
|