1 //===- SimplifyLibCalls.h - Library call simplifier -------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file exposes an interface to build some C language libcalls for
11 // optimization passes that need to call the various functions.
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_TRANSFORMS_UTILS_SIMPLIFYLIBCALLS_H
16 #define LLVM_TRANSFORMS_UTILS_SIMPLIFYLIBCALLS_H
22 class TargetLibraryInfo;
23 class LibCallSimplifierImpl;
25 /// LibCallSimplifier - This class implements a collection of optimizations
26 /// that replace well formed calls to library functions with a more optimal
27 /// form. For example, replacing 'printf("Hello!")' with 'puts("Hello!")'.
28 class LibCallSimplifier {
29 /// Impl - A pointer to the actual implementation of the library call
31 LibCallSimplifierImpl *Impl;
33 LibCallSimplifier(const DataLayout *TD, const TargetLibraryInfo *TLI);
34 virtual ~LibCallSimplifier();
36 /// optimizeCall - Take the given call instruction and return a more
37 /// optimal value to replace the instruction with or 0 if a more
38 /// optimal form can't be found.
39 Value *optimizeCall(CallInst *CI);
41 } // End llvm namespace