CtorUtils.cpp File Reference

#include "llvm/Transforms/Utils/CtorUtils.h"
#include "llvm/ADT/BitVector.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/GlobalVariable.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
#include <numeric>

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Macros
#define	DEBUG_TYPE   "ctor_utils"

Functions
static void	removeGlobalCtors (GlobalVariable *GCL, const BitVector &CtorsToRemove)
	Given a specified llvm.global_ctors list, remove the listed elements.
static std::vector< std::pair< uint32_t, Function * > >	parseGlobalCtors (GlobalVariable *GV)
	Given a llvm.global_ctors list that we can understand, return a list of the functions and null terminator as a vector.
static GlobalVariable *	findGlobalCtors (Module &M)
	Find the llvm.global_ctors list.

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "ctor_utils"

Definition at line 23 of file CtorUtils.cpp.

Function Documentation

findGlobalCtors()

static GlobalVariable * findGlobalCtors ( Module &  M )

static

Find the llvm.global_ctors list.

Definition at line 77 of file CtorUtils.cpp.

References F, llvm::GlobalVariable::getInitializer(), llvm::User::getOperand(), llvm::GlobalVariable::hasUniqueInitializer(), and llvm::User::operands().

Referenced by llvm::optimizeGlobalCtorsList().

parseGlobalCtors()

static std::vector< std::pair< uint32_t, Function * > > parseGlobalCtors ( GlobalVariable *  GV )

static

Given a llvm.global_ctors list that we can understand, return a list of the functions and null terminator as a vector.

Definition at line 64 of file CtorUtils.cpp.

References llvm::GlobalVariable::getInitializer(), llvm::User::getNumOperands(), llvm::User::getOperand(), and llvm::User::operands().

Referenced by llvm::optimizeGlobalCtorsList().

removeGlobalCtors()

static void removeGlobalCtors ( GlobalVariable *  GCL, const BitVector &  CtorsToRemove  )

static

Given a specified llvm.global_ctors list, remove the listed elements.

Definition at line 28 of file CtorUtils.cpp.

References llvm::GlobalVariable::eraseFromParent(), llvm::ConstantArray::get(), llvm::ArrayType::getElementType(), llvm::GlobalVariable::getInitializer(), llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::GlobalValue::getLinkage(), llvm::User::getNumOperands(), llvm::User::getOperand(), llvm::GlobalValue::getParent(), llvm::GlobalValue::getThreadLocalMode(), llvm::ConstantArray::getType(), llvm::Value::getType(), I, llvm::Module::insertGlobalVariable(), llvm::GlobalVariable::isConstant(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::Value::replaceAllUsesWith(), llvm::GlobalVariable::setInitializer(), llvm::SmallVectorBase< Size_T >::size(), llvm::Value::takeName(), llvm::BitVector::test(), and llvm::Value::use_empty().

Referenced by llvm::optimizeGlobalCtorsList().