mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-22 07:32:48 +00:00
02680f946b
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106686 91177308-0d34-0410-b5e6-96231b3b80d8
81 lines
3.2 KiB
C++
81 lines
3.2 KiB
C++
//===- llvm/Analysis/MemoryBuiltins.h- Calls to memory builtins -*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This family of functions identifies calls to builtin functions that allocate
|
|
// or free memory.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_ANALYSIS_MEMORYBUILTINS_H
|
|
#define LLVM_ANALYSIS_MEMORYBUILTINS_H
|
|
|
|
namespace llvm {
|
|
class CallInst;
|
|
class PointerType;
|
|
class TargetData;
|
|
class Type;
|
|
class Value;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// malloc Call Utility Functions.
|
|
//
|
|
|
|
/// isMalloc - Returns true if the value is either a malloc call or a bitcast of
|
|
/// the result of a malloc call
|
|
bool isMalloc(const Value *I);
|
|
|
|
/// extractMallocCall - Returns the corresponding CallInst if the instruction
|
|
/// is a malloc call. Since CallInst::CreateMalloc() only creates calls, we
|
|
/// ignore InvokeInst here.
|
|
const CallInst *extractMallocCall(const Value *I);
|
|
CallInst *extractMallocCall(Value *I);
|
|
|
|
/// extractMallocCallFromBitCast - Returns the corresponding CallInst if the
|
|
/// instruction is a bitcast of the result of a malloc call.
|
|
const CallInst *extractMallocCallFromBitCast(const Value *I);
|
|
CallInst *extractMallocCallFromBitCast(Value *I);
|
|
|
|
/// isArrayMalloc - Returns the corresponding CallInst if the instruction
|
|
/// is a call to malloc whose array size can be determined and the array size
|
|
/// is not constant 1. Otherwise, return NULL.
|
|
const CallInst *isArrayMalloc(const Value *I, const TargetData *TD);
|
|
|
|
/// getMallocType - Returns the PointerType resulting from the malloc call.
|
|
/// The PointerType depends on the number of bitcast uses of the malloc call:
|
|
/// 0: PointerType is the malloc calls' return type.
|
|
/// 1: PointerType is the bitcast's result type.
|
|
/// >1: Unique PointerType cannot be determined, return NULL.
|
|
const PointerType *getMallocType(const CallInst *CI);
|
|
|
|
/// getMallocAllocatedType - Returns the Type allocated by malloc call.
|
|
/// The Type depends on the number of bitcast uses of the malloc call:
|
|
/// 0: PointerType is the malloc calls' return type.
|
|
/// 1: PointerType is the bitcast's result type.
|
|
/// >1: Unique PointerType cannot be determined, return NULL.
|
|
const Type *getMallocAllocatedType(const CallInst *CI);
|
|
|
|
/// getMallocArraySize - Returns the array size of a malloc call. If the
|
|
/// argument passed to malloc is a multiple of the size of the malloced type,
|
|
/// then return that multiple. For non-array mallocs, the multiple is
|
|
/// constant 1. Otherwise, return NULL for mallocs whose array size cannot be
|
|
/// determined.
|
|
Value *getMallocArraySize(CallInst *CI, const TargetData *TD,
|
|
bool LookThroughSExt = false);
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// free Call Utility Functions.
|
|
//
|
|
|
|
/// isFreeCall - Returns non-null if the value is a call to the builtin free()
|
|
const CallInst *isFreeCall(const Value *I);
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|