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Remove lib/Transforms/Instrumentation/ProfilingUtils.*
They were leftover from the old profiling support. Patch by Alastair Murray. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192605 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
parent
67b28826cd
commit
61bc4be26e
@ -6,7 +6,6 @@ add_llvm_library(LLVMInstrumentation
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GCOVProfiling.cpp
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MemorySanitizer.cpp
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Instrumentation.cpp
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ProfilingUtils.cpp
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ThreadSanitizer.cpp
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)
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@ -17,7 +17,6 @@
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#define DEBUG_TYPE "insert-gcov-profiling"
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#include "llvm/Transforms/Instrumentation.h"
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#include "ProfilingUtils.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/Statistic.h"
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@ -1,169 +0,0 @@
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//===- ProfilingUtils.cpp - Helper functions shared by profilers ----------===//
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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 file implements a few helper functions which are used by profile
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// instrumentation code to instrument the code. This allows the profiler pass
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// to worry about *what* to insert, and these functions take care of *how* to do
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// it.
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//
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//===----------------------------------------------------------------------===//
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#include "ProfilingUtils.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/IR/DerivedTypes.h"
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#include "llvm/IR/Instructions.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/IR/Module.h"
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void llvm::InsertProfilingInitCall(Function *MainFn, const char *FnName,
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GlobalValue *Array,
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PointerType *arrayType) {
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LLVMContext &Context = MainFn->getContext();
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Type *ArgVTy =
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PointerType::getUnqual(Type::getInt8PtrTy(Context));
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PointerType *UIntPtr = arrayType ? arrayType :
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Type::getInt32PtrTy(Context);
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Module &M = *MainFn->getParent();
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Constant *InitFn = M.getOrInsertFunction(FnName, Type::getInt32Ty(Context),
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Type::getInt32Ty(Context),
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ArgVTy, UIntPtr,
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Type::getInt32Ty(Context),
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(Type *)0);
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// This could force argc and argv into programs that wouldn't otherwise have
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// them, but instead we just pass null values in.
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std::vector<Value*> Args(4);
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Args[0] = Constant::getNullValue(Type::getInt32Ty(Context));
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Args[1] = Constant::getNullValue(ArgVTy);
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// Skip over any allocas in the entry block.
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BasicBlock *Entry = MainFn->begin();
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BasicBlock::iterator InsertPos = Entry->begin();
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while (isa<AllocaInst>(InsertPos)) ++InsertPos;
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std::vector<Constant*> GEPIndices(2,
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Constant::getNullValue(Type::getInt32Ty(Context)));
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unsigned NumElements = 0;
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if (Array) {
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Args[2] = ConstantExpr::getGetElementPtr(Array, GEPIndices);
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NumElements =
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cast<ArrayType>(Array->getType()->getElementType())->getNumElements();
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} else {
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// If this profiling instrumentation doesn't have a constant array, just
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// pass null.
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Args[2] = ConstantPointerNull::get(UIntPtr);
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}
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Args[3] = ConstantInt::get(Type::getInt32Ty(Context), NumElements);
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CallInst *InitCall = CallInst::Create(InitFn, Args, "newargc", InsertPos);
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// If argc or argv are not available in main, just pass null values in.
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Function::arg_iterator AI;
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switch (MainFn->arg_size()) {
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default:
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case 2:
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AI = MainFn->arg_begin(); ++AI;
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if (AI->getType() != ArgVTy) {
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Instruction::CastOps opcode = CastInst::getCastOpcode(AI, false, ArgVTy,
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false);
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InitCall->setArgOperand(1,
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CastInst::Create(opcode, AI, ArgVTy, "argv.cast", InitCall));
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} else {
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InitCall->setArgOperand(1, AI);
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}
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/* FALL THROUGH */
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case 1:
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AI = MainFn->arg_begin();
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// If the program looked at argc, have it look at the return value of the
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// init call instead.
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if (!AI->getType()->isIntegerTy(32)) {
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Instruction::CastOps opcode;
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if (!AI->use_empty()) {
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opcode = CastInst::getCastOpcode(InitCall, true, AI->getType(), true);
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AI->replaceAllUsesWith(
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CastInst::Create(opcode, InitCall, AI->getType(), "", InsertPos));
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}
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opcode = CastInst::getCastOpcode(AI, true,
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Type::getInt32Ty(Context), true);
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InitCall->setArgOperand(0,
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CastInst::Create(opcode, AI, Type::getInt32Ty(Context),
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"argc.cast", InitCall));
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} else {
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AI->replaceAllUsesWith(InitCall);
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InitCall->setArgOperand(0, AI);
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}
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case 0: break;
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}
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}
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void llvm::IncrementCounterInBlock(BasicBlock *BB, unsigned CounterNum,
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GlobalValue *CounterArray, bool beginning) {
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// Insert the increment after any alloca or PHI instructions...
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BasicBlock::iterator InsertPos = beginning ? BB->getFirstInsertionPt() :
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BB->getTerminator();
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while (isa<AllocaInst>(InsertPos))
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++InsertPos;
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LLVMContext &Context = BB->getContext();
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// Create the getelementptr constant expression
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std::vector<Constant*> Indices(2);
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Indices[0] = Constant::getNullValue(Type::getInt32Ty(Context));
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Indices[1] = ConstantInt::get(Type::getInt32Ty(Context), CounterNum);
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Constant *ElementPtr =
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ConstantExpr::getGetElementPtr(CounterArray, Indices);
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// Load, increment and store the value back.
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Value *OldVal = new LoadInst(ElementPtr, "OldFuncCounter", InsertPos);
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Value *NewVal = BinaryOperator::Create(Instruction::Add, OldVal,
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ConstantInt::get(Type::getInt32Ty(Context), 1),
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"NewFuncCounter", InsertPos);
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new StoreInst(NewVal, ElementPtr, InsertPos);
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}
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void llvm::InsertProfilingShutdownCall(Function *Callee, Module *Mod) {
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// llvm.global_dtors is an array of type { i32, void ()* }. Prepare those
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// types.
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Type *GlobalDtorElems[2] = {
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Type::getInt32Ty(Mod->getContext()),
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FunctionType::get(Type::getVoidTy(Mod->getContext()), false)->getPointerTo()
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};
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StructType *GlobalDtorElemTy =
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StructType::get(Mod->getContext(), GlobalDtorElems, false);
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// Construct the new element we'll be adding.
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Constant *Elem[2] = {
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ConstantInt::get(Type::getInt32Ty(Mod->getContext()), 65535),
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ConstantExpr::getBitCast(Callee, GlobalDtorElems[1])
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};
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// If llvm.global_dtors exists, make a copy of the things in its list and
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// delete it, to replace it with one that has a larger array type.
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std::vector<Constant *> dtors;
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if (GlobalVariable *GlobalDtors = Mod->getNamedGlobal("llvm.global_dtors")) {
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if (ConstantArray *InitList =
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dyn_cast<ConstantArray>(GlobalDtors->getInitializer())) {
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for (unsigned i = 0, e = InitList->getType()->getNumElements();
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i != e; ++i)
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dtors.push_back(cast<Constant>(InitList->getOperand(i)));
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}
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GlobalDtors->eraseFromParent();
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}
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// Build up llvm.global_dtors with our new item in it.
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GlobalVariable *GlobalDtors = new GlobalVariable(
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*Mod, ArrayType::get(GlobalDtorElemTy, 1), false,
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GlobalValue::AppendingLinkage, NULL, "llvm.global_dtors");
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dtors.push_back(ConstantStruct::get(GlobalDtorElemTy, Elem));
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GlobalDtors->setInitializer(ConstantArray::get(
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cast<ArrayType>(GlobalDtors->getType()->getElementType()), dtors));
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}
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@ -1,36 +0,0 @@
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//===- ProfilingUtils.h - Helper functions shared by profilers --*- C++ -*-===//
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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 file defines a few helper functions which are used by profile
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// instrumentation code to instrument the code. This allows the profiler pass
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// to worry about *what* to insert, and these functions take care of *how* to do
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// it.
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//
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//===----------------------------------------------------------------------===//
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#ifndef PROFILINGUTILS_H
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#define PROFILINGUTILS_H
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namespace llvm {
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class BasicBlock;
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class Function;
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class GlobalValue;
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class Module;
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class PointerType;
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void InsertProfilingInitCall(Function *MainFn, const char *FnName,
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GlobalValue *Arr = 0,
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PointerType *arrayType = 0);
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void IncrementCounterInBlock(BasicBlock *BB, unsigned CounterNum,
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GlobalValue *CounterArray,
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bool beginning = true);
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void InsertProfilingShutdownCall(Function *Callee, Module *Mod);
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}
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#endif
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