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-rw-r--r--include/llvm/Analysis/MallocHelper.h85
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diff --git a/include/llvm/Analysis/MallocHelper.h b/include/llvm/Analysis/MallocHelper.h
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-//===- llvm/Analysis/MallocHelper.h ---- Identify malloc calls --*- 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 malloc, bitcasts of malloc
-// calls, and the types and array sizes associated with them.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_ANALYSIS_MALLOCHELPER_H
-#define LLVM_ANALYSIS_MALLOCHELPER_H
-
-namespace llvm {
-class CallInst;
-class LLVMContext;
-class PointerType;
-class TargetData;
-class Type;
-class Value;
-
-//===----------------------------------------------------------------------===//
-// malloc Call Utility Functions.
-//
-
-/// isMalloc - Returns true if the 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
-/// matches the malloc call IR generated by CallInst::CreateMalloc(). This
-/// means that it is a malloc call with one bitcast use AND the malloc call's
-/// size argument is:
-/// 1. a constant not equal to the size of the malloced type
-/// or
-/// 2. the result of a multiplication by the size of the malloced type
-/// Otherwise it returns NULL.
-/// The unique bitcast is needed to determine the type/size of the array
-/// allocation.
-CallInst* isArrayMalloc(Value* I, LLVMContext &Context, const TargetData* TD);
-const CallInst* isArrayMalloc(const Value* I, LLVMContext &Context,
- const TargetData* TD);
-
-/// getMallocType - Returns the PointerType resulting from the malloc call.
-/// This PointerType is the result type of the call's only bitcast use.
-/// If there is no unique bitcast use, then return NULL.
-const PointerType* getMallocType(const CallInst* CI);
-
-/// getMallocAllocatedType - Returns the Type allocated by malloc call. This
-/// Type is the result type of the call's only bitcast use. If there is no
-/// unique bitcast use, then return NULL.
-const Type* getMallocAllocatedType(const CallInst* CI);
-
-/// getMallocArraySize - Returns the array size of a malloc call. For array
-/// mallocs, the size is computated in 1 of 3 ways:
-/// 1. If the element type is of size 1, then array size is the argument to
-/// malloc.
-/// 2. Else if the malloc's argument is a constant, the array size is that
-/// argument divided by the element type's size.
-/// 3. Else the malloc argument must be a multiplication and the array size is
-/// the first operand of the multiplication.
-/// For non-array mallocs, the computed size is constant 1.
-/// This function returns NULL for all mallocs whose array size cannot be
-/// determined.
-Value* getMallocArraySize(CallInst* CI, LLVMContext &Context,
- const TargetData* TD);
-
-} // End llvm namespace
-
-#endif
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