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 LLVM_TRANSFORMS_UTILS_BUILDLIBCALLS_H 16 #define LLVM_TRANSFORMS_UTILS_BUILDLIBCALLS_H 17 18 #include "llvm/IR/IRBuilder.h" 19 20 namespace llvm { 21 class Value; 22 class DataLayout; 23 class TargetLibraryInfo; 24 25 /// CastToCStr - Return V if it is an i8*, otherwise cast it to i8*. 26 Value *CastToCStr(Value *V, IRBuilder<> &B); 27 28 /// EmitStrLen - Emit a call to the strlen function to the builder, for the 29 /// specified pointer. Ptr is required to be some pointer type, and the 30 /// return value has 'intptr_t' type. 31 Value *EmitStrLen(Value *Ptr, IRBuilder<> &B, const DataLayout &DL, 32 const TargetLibraryInfo *TLI); 33 34 /// EmitStrNLen - Emit a call to the strnlen function to the builder, for the 35 /// specified pointer. Ptr is required to be some pointer type, MaxLen must 36 /// be of size_t type, and the return value has 'intptr_t' type. 37 Value *EmitStrNLen(Value *Ptr, Value *MaxLen, IRBuilder<> &B, 38 const DataLayout &DL, const TargetLibraryInfo *TLI); 39 40 /// EmitStrChr - Emit a call to the strchr function to the builder, for the 41 /// specified pointer and character. Ptr is required to be some pointer type, 42 /// and the return value has 'i8*' type. 43 Value *EmitStrChr(Value *Ptr, char C, IRBuilder<> &B, 44 const TargetLibraryInfo *TLI); 45 46 /// EmitStrNCmp - Emit a call to the strncmp function to the builder. 47 Value *EmitStrNCmp(Value *Ptr1, Value *Ptr2, Value *Len, IRBuilder<> &B, 48 const DataLayout &DL, const TargetLibraryInfo *TLI); 49 50 /// EmitStrCpy - Emit a call to the strcpy function to the builder, for the 51 /// specified pointer arguments. 52 Value *EmitStrCpy(Value *Dst, Value *Src, IRBuilder<> &B, 53 const TargetLibraryInfo *TLI, StringRef Name = "strcpy"); 54 55 /// EmitStrNCpy - Emit a call to the strncpy function to the builder, for the 56 /// specified pointer arguments and length. 57 Value *EmitStrNCpy(Value *Dst, Value *Src, Value *Len, IRBuilder<> &B, 58 const TargetLibraryInfo *TLI, StringRef Name = "strncpy"); 59 60 /// EmitMemCpyChk - Emit a call to the __memcpy_chk function to the builder. 61 /// This expects that the Len and ObjSize have type 'intptr_t' and Dst/Src 62 /// are pointers. 63 Value *EmitMemCpyChk(Value *Dst, Value *Src, Value *Len, Value *ObjSize, 64 IRBuilder<> &B, const DataLayout &DL, 65 const TargetLibraryInfo *TLI); 66 67 /// EmitMemChr - Emit a call to the memchr function. This assumes that Ptr is 68 /// a pointer, Val is an i32 value, and Len is an 'intptr_t' value. 69 Value *EmitMemChr(Value *Ptr, Value *Val, Value *Len, IRBuilder<> &B, 70 const DataLayout &DL, const TargetLibraryInfo *TLI); 71 72 /// EmitMemCmp - Emit a call to the memcmp function. 73 Value *EmitMemCmp(Value *Ptr1, Value *Ptr2, Value *Len, IRBuilder<> &B, 74 const DataLayout &DL, const TargetLibraryInfo *TLI); 75 76 /// EmitUnaryFloatFnCall - Emit a call to the unary function named 'Name' 77 /// (e.g. 'floor'). This function is known to take a single of type matching 78 /// 'Op' and returns one value with the same type. If 'Op' is a long double, 79 /// 'l' is added as the suffix of name, if 'Op' is a float, we add a 'f' 80 /// suffix. 81 Value *EmitUnaryFloatFnCall(Value *Op, StringRef Name, IRBuilder<> &B, 82 const AttributeSet &Attrs); 83 84 /// EmitUnaryFloatFnCall - Emit a call to the binary function named 'Name' 85 /// (e.g. 'fmin'). This function is known to take type matching 'Op1' and 86 /// 'Op2' and return one value with the same type. If 'Op1/Op2' are long 87 /// double, 'l' is added as the suffix of name, if 'Op1/Op2' are float, we 88 /// add a 'f' suffix. 89 Value *EmitBinaryFloatFnCall(Value *Op1, Value *Op2, StringRef Name, 90 IRBuilder<> &B, const AttributeSet &Attrs); 91 92 /// EmitPutChar - Emit a call to the putchar function. This assumes that Char 93 /// is an integer. 94 Value *EmitPutChar(Value *Char, IRBuilder<> &B, const TargetLibraryInfo *TLI); 95 96 /// EmitPutS - Emit a call to the puts function. This assumes that Str is 97 /// some pointer. 98 Value *EmitPutS(Value *Str, IRBuilder<> &B, const TargetLibraryInfo *TLI); 99 100 /// EmitFPutC - Emit a call to the fputc function. This assumes that Char is 101 /// an i32, and File is a pointer to FILE. 102 Value *EmitFPutC(Value *Char, Value *File, IRBuilder<> &B, 103 const TargetLibraryInfo *TLI); 104 105 /// EmitFPutS - Emit a call to the puts function. Str is required to be a 106 /// pointer and File is a pointer to FILE. 107 Value *EmitFPutS(Value *Str, Value *File, IRBuilder<> &B, 108 const TargetLibraryInfo *TLI); 109 110 /// EmitFWrite - Emit a call to the fwrite function. This assumes that Ptr is 111 /// a pointer, Size is an 'intptr_t', and File is a pointer to FILE. 112 Value *EmitFWrite(Value *Ptr, Value *Size, Value *File, IRBuilder<> &B, 113 const DataLayout &DL, const TargetLibraryInfo *TLI); 114 } 115 116 #endif 117
