llvm/llvm/lib/Transforms/Utils/Instrumentation.cpp

//===-- Instrumentation.cpp - TransformUtils Infrastructure ---------------===//
//
// 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 file defines the common initialization infrastructure for the
// Instrumentation library.
//
//===----------------------------------------------------------------------===//

#include "llvm/Transforms/Utils/Instrumentation.h"
#include "llvm/IR/DiagnosticInfo.h"
#include "llvm/IR/DiagnosticPrinter.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/Module.h"
#include "llvm/TargetParser/Triple.h"

usingnamespacellvm;

static cl::opt<bool> ClIgnoreRedundantInstrumentation(
    "ignore-redundant-instrumentation",
    cl::desc("Ignore redundant instrumentation"), cl::Hidden, cl::init(false));

/// Check if module has flag attached, if not add the flag.
bool llvm::checkIfAlreadyInstrumented(Module &M, StringRef Flag) { … }

/// Moves I before IP. Returns new insert point.
static BasicBlock::iterator moveBeforeInsertPoint(BasicBlock::iterator I,
                                                  BasicBlock::iterator IP) { … }

/// Instrumentation passes often insert conditional checks into entry blocks.
/// Call this function before splitting the entry block to move instructions
/// that must remain in the entry block up before the split point. Static
/// allocas and llvm.localescape calls, for example, must remain in the entry
/// block.
BasicBlock::iterator llvm::PrepareToSplitEntryBlock(BasicBlock &BB,
                                                    BasicBlock::iterator IP) { … }

// Create a constant for Str so that we can pass it to the run-time lib.
GlobalVariable *llvm::createPrivateGlobalForString(Module &M, StringRef Str,
                                                   bool AllowMerging,
                                                   Twine NamePrefix) { … }

Comdat *llvm::getOrCreateFunctionComdat(Function &F, Triple &T) { … }

void llvm::setGlobalVariableLargeSection(const Triple &TargetTriple,
                                         GlobalVariable &GV) { … }