48 lines
1.4 KiB
C++
48 lines
1.4 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/Transforms/Utils/InstructionNamer.h"
|
|
#include "llvm/IR/Function.h"
|
|
#include "llvm/IR/PassManager.h"
|
|
#include "llvm/IR/Type.h"
|
|
|
|
using namespace llvm;
|
|
|
|
namespace {
|
|
void nameInstructions(Function &F) {
|
|
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("i");
|
|
}
|
|
}
|
|
}
|
|
|
|
} // namespace
|
|
|
|
PreservedAnalyses InstructionNamerPass::run(Function &F,
|
|
FunctionAnalysisManager &FAM) {
|
|
nameInstructions(F);
|
|
return PreservedAnalyses::all();
|
|
}
|