BuildLibCalls.h revision 19888ca8b4bfcb4aabc957de3f5dce03f84da00c 
1//===- BuildLibCalls.h - Utility builder for libcalls -----------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file exposes an interface to build some C language libcalls for
11// optimization passes that need to call the various functions.
12//
13//===----------------------------------------------------------------------===//
14
15#ifndef TRANSFORMS_UTILS_BUILDLIBCALLS_H
16#define TRANSFORMS_UTILS_BUILDLIBCALLS_H
17
18#include "llvm/Support/IRBuilder.h"
19
20namespace llvm {
21  class Value;
22  class TargetData;
23
24  /// CastToCStr - Return V if it is an i8*, otherwise cast it to i8*.
25  Value *CastToCStr(Value *V, IRBuilder<> &B);
26
27  /// EmitStrLen - Emit a call to the strlen function to the builder, for the
28  /// specified pointer.  Ptr is required to be some pointer type, and the
29  /// return value has 'intptr_t' type.
30  Value *EmitStrLen(Value *Ptr, IRBuilder<> &B, const TargetData *TD);
31
32  /// EmitStrChr - Emit a call to the strchr function to the builder, for the
33  /// specified pointer and character.  Ptr is required to be some pointer type,
34  /// and the return value has 'i8*' type.
35  Value *EmitStrChr(Value *Ptr, char C, IRBuilder<> &B, const TargetData *TD);
36
37  /// EmitStrCpy - Emit a call to the strcpy function to the builder, for the
38  /// specified pointer arguments.
39  Value *EmitStrCpy(Value *Dst, Value *Src, IRBuilder<> &B,
40                    const TargetData *TD);
41
42  /// EmitStpCpy - Emit a call to the stpcpy function to the builder, for the
43  /// specified pointer arguments.
44  Value *EmitStpCpy(Value *Dst, Value *Src, IRBuilder<> &B,
45                    const TargetData *TD);
46
47  /// EmitStrNCpy - Emit a call to the strncpy function to the builder, for the
48  /// specified pointer arguments and length.
49  Value *EmitStrNCpy(Value *Dst, Value *Src, Value *Len, IRBuilder<> &B,
50                    const TargetData *TD);
51
52  /// EmitMemCpy - Emit a call to the memcpy function to the builder.  This
53  /// always expects that the size has type 'intptr_t' and Dst/Src are pointers.
54  Value *EmitMemCpy(Value *Dst, Value *Src, Value *Len,
55                    unsigned Align, IRBuilder<> &B, const TargetData *TD);
56
57  /// EmitMemMove - Emit a call to the memmove function to the builder.  This
58  /// always expects that the size has type 'intptr_t' and Dst/Src are pointers.
59  Value *EmitMemMove(Value *Dst, Value *Src, Value *Len,
60		                 unsigned Align, IRBuilder<> &B, const TargetData *TD);
61
62  /// EmitMemChr - Emit a call to the memchr function.  This assumes that Ptr is
63  /// a pointer, Val is an i32 value, and Len is an 'intptr_t' value.
64  Value *EmitMemChr(Value *Ptr, Value *Val, Value *Len, IRBuilder<> &B,
65                    const TargetData *TD);
66
67  /// EmitMemCmp - Emit a call to the memcmp function.
68  Value *EmitMemCmp(Value *Ptr1, Value *Ptr2, Value *Len, IRBuilder<> &B,
69                    const TargetData *TD);
70
71  /// EmitMemSet - Emit a call to the memset function
72  Value *EmitMemSet(Value *Dst, Value *Val, Value *Len, IRBuilder<> &B,
73                    const TargetData *TD);
74
75  /// EmitUnaryFloatFnCall - Emit a call to the unary function named 'Name'
76  /// (e.g.  'floor').  This function is known to take a single of type matching
77  /// 'Op' and returns one value with the same type.  If 'Op' is a long double,
78  /// 'l' is added as the suffix of name, if 'Op' is a float, we add a 'f'
79  /// suffix.
80  Value *EmitUnaryFloatFnCall(Value *Op, const char *Name, IRBuilder<> &B,
81                              const AttrListPtr &Attrs);
82
83  /// EmitPutChar - Emit a call to the putchar function.  This assumes that Char
84  /// is an integer.
85  Value *EmitPutChar(Value *Char, IRBuilder<> &B, const TargetData *TD);
86
87  /// EmitPutS - Emit a call to the puts function.  This assumes that Str is
88  /// some pointer.
89  void EmitPutS(Value *Str, IRBuilder<> &B, const TargetData *TD);
90
91  /// EmitFPutC - Emit a call to the fputc function.  This assumes that Char is
92  /// an i32, and File is a pointer to FILE.
93  void EmitFPutC(Value *Char, Value *File, IRBuilder<> &B,
94                 const TargetData *TD);
95
96  /// EmitFPutS - Emit a call to the puts function.  Str is required to be a
97  /// pointer and File is a pointer to FILE.
98  void EmitFPutS(Value *Str, Value *File, IRBuilder<> &B, const TargetData *TD);
99
100  /// EmitFWrite - Emit a call to the fwrite function.  This assumes that Ptr is
101  /// a pointer, Size is an 'intptr_t', and File is a pointer to FILE.
102  void EmitFWrite(Value *Ptr, Value *Size, Value *File, IRBuilder<> &B,
103                  const TargetData *TD);
104}
105
106#endif
107