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3113d01af2
Now the pass is just a tiny wrapper around the util. This lets us reuse the logic elsewhere (done here for BuildLibCalls) instead of duplicating it. The next step is to have something like getOrInsertLibFunc that also sets the attributes. Differential Revision: http://reviews.llvm.org/D19470 llvm-svn: 267759
119 lines
5.5 KiB
C++
119 lines
5.5 KiB
C++
//===- BuildLibCalls.h - Utility builder for libcalls -----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file exposes an interface to build some C language libcalls for
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// optimization passes that need to call the various functions.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_UTILS_BUILDLIBCALLS_H
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#define LLVM_TRANSFORMS_UTILS_BUILDLIBCALLS_H
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#include "llvm/IR/IRBuilder.h"
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namespace llvm {
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class Value;
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class DataLayout;
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class TargetLibraryInfo;
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/// Analyze the name and prototype of the given function and set any
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/// applicable attributes.
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/// If the library function is unavailable, this doesn't modify it.
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///
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/// Returns true if any attributes were set and false otherwise.
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bool inferLibFuncAttributes(Function &F, const TargetLibraryInfo &TLI);
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/// Return V if it is an i8*, otherwise cast it to i8*.
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Value *castToCStr(Value *V, IRBuilder<> &B);
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/// Emit a call to the strlen function to the builder, for the specified
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/// pointer. Ptr is required to be some pointer type, and the return value has
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/// 'intptr_t' type.
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Value *emitStrLen(Value *Ptr, IRBuilder<> &B, const DataLayout &DL,
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const TargetLibraryInfo *TLI);
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/// Emit a call to the strnlen function to the builder, for the specified
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/// pointer. Ptr is required to be some pointer type, MaxLen must be of size_t
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/// type, and the return value has 'intptr_t' type.
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Value *emitStrNLen(Value *Ptr, Value *MaxLen, IRBuilder<> &B,
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const DataLayout &DL, const TargetLibraryInfo *TLI);
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/// Emit a call to the strchr function to the builder, for the specified
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/// pointer and character. Ptr is required to be some pointer type, and the
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/// return value has 'i8*' type.
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Value *emitStrChr(Value *Ptr, char C, IRBuilder<> &B,
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const TargetLibraryInfo *TLI);
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/// Emit a call to the strncmp function to the builder.
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Value *emitStrNCmp(Value *Ptr1, Value *Ptr2, Value *Len, IRBuilder<> &B,
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const DataLayout &DL, const TargetLibraryInfo *TLI);
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/// Emit a call to the strcpy function to the builder, for the specified
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/// pointer arguments.
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Value *emitStrCpy(Value *Dst, Value *Src, IRBuilder<> &B,
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const TargetLibraryInfo *TLI, StringRef Name = "strcpy");
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/// Emit a call to the strncpy function to the builder, for the specified
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/// pointer arguments and length.
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Value *emitStrNCpy(Value *Dst, Value *Src, Value *Len, IRBuilder<> &B,
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const TargetLibraryInfo *TLI, StringRef Name = "strncpy");
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/// Emit a call to the __memcpy_chk function to the builder. This expects that
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/// the Len and ObjSize have type 'intptr_t' and Dst/Src are pointers.
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Value *emitMemCpyChk(Value *Dst, Value *Src, Value *Len, Value *ObjSize,
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IRBuilder<> &B, const DataLayout &DL,
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const TargetLibraryInfo *TLI);
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/// Emit a call to the memchr function. This assumes that Ptr is a pointer,
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/// Val is an i32 value, and Len is an 'intptr_t' value.
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Value *emitMemChr(Value *Ptr, Value *Val, Value *Len, IRBuilder<> &B,
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const DataLayout &DL, const TargetLibraryInfo *TLI);
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/// Emit a call to the memcmp function.
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Value *emitMemCmp(Value *Ptr1, Value *Ptr2, Value *Len, IRBuilder<> &B,
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const DataLayout &DL, const TargetLibraryInfo *TLI);
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/// Emit a call to the unary function named 'Name' (e.g. 'floor'). This
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/// function is known to take a single of type matching 'Op' and returns one
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/// value with the same type. If 'Op' is a long double, 'l' is added as the
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/// suffix of name, if 'Op' is a float, we add a 'f' suffix.
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Value *emitUnaryFloatFnCall(Value *Op, StringRef Name, IRBuilder<> &B,
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const AttributeSet &Attrs);
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/// Emit a call to the binary function named 'Name' (e.g. 'fmin'). This
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/// function is known to take type matching 'Op1' and 'Op2' and return one
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/// value with the same type. If 'Op1/Op2' are long double, 'l' is added as
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/// the suffix of name, if 'Op1/Op2' are float, we add a 'f' suffix.
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Value *emitBinaryFloatFnCall(Value *Op1, Value *Op2, StringRef Name,
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IRBuilder<> &B, const AttributeSet &Attrs);
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/// Emit a call to the putchar function. This assumes that Char is an integer.
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Value *emitPutChar(Value *Char, IRBuilder<> &B, const TargetLibraryInfo *TLI);
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/// Emit a call to the puts function. This assumes that Str is some pointer.
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Value *emitPutS(Value *Str, IRBuilder<> &B, const TargetLibraryInfo *TLI);
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/// Emit a call to the fputc function. This assumes that Char is an i32, and
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/// File is a pointer to FILE.
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Value *emitFPutC(Value *Char, Value *File, IRBuilder<> &B,
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const TargetLibraryInfo *TLI);
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/// Emit a call to the puts function. Str is required to be a pointer and
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/// File is a pointer to FILE.
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Value *emitFPutS(Value *Str, Value *File, IRBuilder<> &B,
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const TargetLibraryInfo *TLI);
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/// Emit a call to the fwrite function. This assumes that Ptr is a pointer,
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/// Size is an 'intptr_t', and File is a pointer to FILE.
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Value *emitFWrite(Value *Ptr, Value *Size, Value *File, IRBuilder<> &B,
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const DataLayout &DL, const TargetLibraryInfo *TLI);
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}
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#endif
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