src/llvm/include/llvm/Transforms/Utils/BuildLibCalls.h

   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 *TD,
  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 *TD, 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, const DataLayout *TD,
  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 *TD, 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 DataLayout *TD, const TargetLibraryInfo *TLI,
  54                     StringRef Name = "strcpy");
  55
  56   /// EmitStrNCpy - Emit a call to the strncpy function to the builder, for the
  57   /// specified pointer arguments and length.
  58   Value *EmitStrNCpy(Value *Dst, Value *Src, Value *Len, IRBuilder<> &B,
  59                      const DataLayout *TD, const TargetLibraryInfo *TLI,
  60                      StringRef Name = "strncpy");
  61
  62   /// EmitMemCpyChk - Emit a call to the __memcpy_chk function to the builder.
  63   /// This expects that the Len and ObjSize have type 'intptr_t' and Dst/Src
  64   /// are pointers.
  65   Value *EmitMemCpyChk(Value *Dst, Value *Src, Value *Len, Value *ObjSize,
  66                        IRBuilder<> &B, const DataLayout *TD,
  67                        const TargetLibraryInfo *TLI);
  68
  69   /// EmitMemChr - Emit a call to the memchr function.  This assumes that Ptr is
  70   /// a pointer, Val is an i32 value, and Len is an 'intptr_t' value.
  71   Value *EmitMemChr(Value *Ptr, Value *Val, Value *Len, IRBuilder<> &B,
  72                     const DataLayout *TD, const TargetLibraryInfo *TLI);
  73
  74   /// EmitMemCmp - Emit a call to the memcmp function.
  75   Value *EmitMemCmp(Value *Ptr1, Value *Ptr2, Value *Len, IRBuilder<> &B,
  76                     const DataLayout *TD, const TargetLibraryInfo *TLI);
  77
  78   /// EmitUnaryFloatFnCall - Emit a call to the unary function named 'Name'
  79   /// (e.g.  'floor').  This function is known to take a single of type matching
  80   /// 'Op' and returns one value with the same type.  If 'Op' is a long double,
  81   /// 'l' is added as the suffix of name, if 'Op' is a float, we add a 'f'
  82   /// suffix.
  83   Value *EmitUnaryFloatFnCall(Value *Op, StringRef Name, IRBuilder<> &B,
  84                               const AttributeSet &Attrs);
  85
  86   /// EmitUnaryFloatFnCall - Emit a call to the binary function named 'Name'
  87   /// (e.g. 'fmin').  This function is known to take type matching 'Op1' and
  88   /// 'Op2' and return one value with the same type.  If 'Op1/Op2' are long
  89   /// double, 'l' is added as the suffix of name, if 'Op1/Op2' are float, we
  90   /// add a 'f' suffix.
  91   Value *EmitBinaryFloatFnCall(Value *Op1, Value *Op2, StringRef Name,
  92                                   IRBuilder<> &B, const AttributeSet &Attrs);
  93
  94   /// EmitPutChar - Emit a call to the putchar function.  This assumes that Char
  95   /// is an integer.
  96   Value *EmitPutChar(Value *Char, IRBuilder<> &B, const DataLayout *TD,
  97                      const TargetLibraryInfo *TLI);
  98
  99   /// EmitPutS - Emit a call to the puts function.  This assumes that Str is
 100   /// some pointer.
 101   Value *EmitPutS(Value *Str, IRBuilder<> &B, const DataLayout *TD,
 102                   const TargetLibraryInfo *TLI);
 103
 104   /// EmitFPutC - Emit a call to the fputc function.  This assumes that Char is
 105   /// an i32, and File is a pointer to FILE.
 106   Value *EmitFPutC(Value *Char, Value *File, IRBuilder<> &B,
 107                    const DataLayout *TD, const TargetLibraryInfo *TLI);
 108
 109   /// EmitFPutS - Emit a call to the puts function.  Str is required to be a
 110   /// pointer and File is a pointer to FILE.
 111   Value *EmitFPutS(Value *Str, Value *File, IRBuilder<> &B, const DataLayout *TD,
 112                    const TargetLibraryInfo *TLI);
 113
 114   /// EmitFWrite - Emit a call to the fwrite function.  This assumes that Ptr is
 115   /// a pointer, Size is an 'intptr_t', and File is a pointer to FILE.
 116   Value *EmitFWrite(Value *Ptr, Value *Size, Value *File, IRBuilder<> &B,
 117                     const DataLayout *TD, const TargetLibraryInfo *TLI);
 118 }
 119
 120 #endif