6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
280 lines
14 KiB
C++
280 lines
14 KiB
C++
//===- BuildLibCalls.h - Utility builder for libcalls -----------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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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/Analysis/TargetLibraryInfo.h"
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namespace llvm {
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class Value;
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class DataLayout;
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class IRBuilderBase;
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/// Analyze the name and prototype of the given function and set any
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/// applicable attributes. Note that this merely helps optimizations on an
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/// already existing function but does not consider mandatory attributes.
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///
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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 inferNonMandatoryLibFuncAttrs(Module *M, StringRef Name,
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const TargetLibraryInfo &TLI);
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bool inferNonMandatoryLibFuncAttrs(Function &F, const TargetLibraryInfo &TLI);
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/// Calls getOrInsertFunction() and then makes sure to add mandatory
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/// argument attributes.
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FunctionCallee getOrInsertLibFunc(Module *M, const TargetLibraryInfo &TLI,
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LibFunc TheLibFunc, FunctionType *T,
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AttributeList AttributeList);
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FunctionCallee getOrInsertLibFunc(Module *M, const TargetLibraryInfo &TLI,
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LibFunc TheLibFunc, FunctionType *T);
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template <typename... ArgsTy>
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FunctionCallee getOrInsertLibFunc(Module *M, const TargetLibraryInfo &TLI,
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LibFunc TheLibFunc, AttributeList AttributeList,
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Type *RetTy, ArgsTy... Args) {
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SmallVector<Type*, sizeof...(ArgsTy)> ArgTys{Args...};
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return getOrInsertLibFunc(M, TLI, TheLibFunc,
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FunctionType::get(RetTy, ArgTys, false),
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AttributeList);
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}
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/// Same as above, but without the attributes.
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template <typename... ArgsTy>
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FunctionCallee getOrInsertLibFunc(Module *M, const TargetLibraryInfo &TLI,
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LibFunc TheLibFunc, Type *RetTy, ArgsTy... Args) {
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return getOrInsertLibFunc(M, TLI, TheLibFunc, AttributeList{}, RetTy,
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Args...);
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}
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// Avoid an incorrect ordering that'd otherwise compile incorrectly.
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template <typename... ArgsTy>
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FunctionCallee
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getOrInsertLibFunc(Module *M, const TargetLibraryInfo &TLI,
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LibFunc TheLibFunc, AttributeList AttributeList,
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FunctionType *Invalid, ArgsTy... Args) = delete;
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// Handle -mregparm for the given function.
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// Note that this function is a rough approximation that only works for simple
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// function signatures; it does not apply other relevant attributes for
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// function signatures, including sign/zero-extension for arguments and return
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// values.
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void markRegisterParameterAttributes(Function *F);
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/// Check whether the library function is available on target and also that
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/// it in the current Module is a Function with the right type.
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bool isLibFuncEmittable(const Module *M, const TargetLibraryInfo *TLI,
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LibFunc TheLibFunc);
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bool isLibFuncEmittable(const Module *M, const TargetLibraryInfo *TLI,
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StringRef Name);
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/// Check whether the overloaded floating point function
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/// corresponding to \a Ty is available.
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bool hasFloatFn(const Module *M, const TargetLibraryInfo *TLI, Type *Ty,
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LibFunc DoubleFn, LibFunc FloatFn, LibFunc LongDoubleFn);
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/// Get the name of the overloaded floating point function
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/// corresponding to \a Ty. Return the LibFunc in \a TheLibFunc.
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StringRef getFloatFn(const Module *M, const TargetLibraryInfo *TLI, Type *Ty,
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LibFunc DoubleFn, LibFunc FloatFn, LibFunc LongDoubleFn,
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LibFunc &TheLibFunc);
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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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/// 'size_t' type.
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Value *emitStrLen(Value *Ptr, IRBuilderBase &B, const DataLayout &DL,
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const TargetLibraryInfo *TLI);
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/// Emit a call to the strdup 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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/// 'i8*' type.
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Value *emitStrDup(Value *Ptr, IRBuilderBase &B, 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, IRBuilderBase &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, IRBuilderBase &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, IRBuilderBase &B,
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const TargetLibraryInfo *TLI);
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/// Emit a call to the stpcpy function to the builder, for the specified
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/// pointer arguments.
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Value *emitStpCpy(Value *Dst, Value *Src, IRBuilderBase &B,
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const TargetLibraryInfo *TLI);
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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, IRBuilderBase &B,
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const TargetLibraryInfo *TLI);
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/// Emit a call to the stpncpy function to the builder, for the specified
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/// pointer arguments and length.
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Value *emitStpNCpy(Value *Dst, Value *Src, Value *Len, IRBuilderBase &B,
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const TargetLibraryInfo *TLI);
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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 'size_t' and Dst/Src are pointers.
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Value *emitMemCpyChk(Value *Dst, Value *Src, Value *Len, Value *ObjSize,
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IRBuilderBase &B, const DataLayout &DL,
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const TargetLibraryInfo *TLI);
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/// Emit a call to the mempcpy function.
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Value *emitMemPCpy(Value *Dst, Value *Src, Value *Len, IRBuilderBase &B,
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const DataLayout &DL, 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 'int' value, and Len is an 'size_t' value.
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Value *emitMemChr(Value *Ptr, Value *Val, Value *Len, IRBuilderBase &B,
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const DataLayout &DL, const TargetLibraryInfo *TLI);
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/// Emit a call to the memrchr function, analogously to emitMemChr.
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Value *emitMemRChr(Value *Ptr, Value *Val, Value *Len, IRBuilderBase &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, IRBuilderBase &B,
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const DataLayout &DL, const TargetLibraryInfo *TLI);
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/// Emit a call to the bcmp function.
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Value *emitBCmp(Value *Ptr1, Value *Ptr2, Value *Len, IRBuilderBase &B,
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const DataLayout &DL, const TargetLibraryInfo *TLI);
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/// Emit a call to the memccpy function.
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Value *emitMemCCpy(Value *Ptr1, Value *Ptr2, Value *Val, Value *Len,
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IRBuilderBase &B, const TargetLibraryInfo *TLI);
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/// Emit a call to the snprintf function.
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Value *emitSNPrintf(Value *Dest, Value *Size, Value *Fmt,
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ArrayRef<Value *> Args, IRBuilderBase &B,
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const TargetLibraryInfo *TLI);
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/// Emit a call to the sprintf function.
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Value *emitSPrintf(Value *Dest, Value *Fmt, ArrayRef<Value *> VariadicArgs,
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IRBuilderBase &B, const TargetLibraryInfo *TLI);
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/// Emit a call to the strcat function.
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Value *emitStrCat(Value *Dest, Value *Src, IRBuilderBase &B,
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const TargetLibraryInfo *TLI);
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/// Emit a call to the strlcpy function.
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Value *emitStrLCpy(Value *Dest, Value *Src, Value *Size, IRBuilderBase &B,
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const TargetLibraryInfo *TLI);
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/// Emit a call to the strlcat function.
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Value *emitStrLCat(Value *Dest, Value *Src, Value *Size, IRBuilderBase &B,
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const TargetLibraryInfo *TLI);
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/// Emit a call to the strncat function.
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Value *emitStrNCat(Value *Dest, Value *Src, Value *Size, IRBuilderBase &B,
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const TargetLibraryInfo *TLI);
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/// Emit a call to the vsnprintf function.
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Value *emitVSNPrintf(Value *Dest, Value *Size, Value *Fmt, Value *VAList,
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IRBuilderBase &B, const TargetLibraryInfo *TLI);
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/// Emit a call to the vsprintf function.
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Value *emitVSPrintf(Value *Dest, Value *Fmt, Value *VAList, IRBuilderBase &B,
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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, const TargetLibraryInfo *TLI,
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StringRef Name, IRBuilderBase &B,
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const AttributeList &Attrs);
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/// Emit a call to the unary function DoubleFn, FloatFn or LongDoubleFn,
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/// depending of the type of Op.
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Value *emitUnaryFloatFnCall(Value *Op, const TargetLibraryInfo *TLI,
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LibFunc DoubleFn, LibFunc FloatFn,
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LibFunc LongDoubleFn, IRBuilderBase &B,
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const AttributeList &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,
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const TargetLibraryInfo *TLI,
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StringRef Name, IRBuilderBase &B,
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const AttributeList &Attrs);
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/// Emit a call to the binary function DoubleFn, FloatFn or LongDoubleFn,
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/// depending of the type of Op1.
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Value *emitBinaryFloatFnCall(Value *Op1, Value *Op2,
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const TargetLibraryInfo *TLI, LibFunc DoubleFn,
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LibFunc FloatFn, LibFunc LongDoubleFn,
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IRBuilderBase &B, const AttributeList &Attrs);
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/// Emit a call to the putchar function. This assumes that Char is an 'int'.
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Value *emitPutChar(Value *Char, IRBuilderBase &B,
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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, IRBuilderBase &B, const TargetLibraryInfo *TLI);
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/// Emit a call to the fputc function. This assumes that Char is an 'int', and
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/// File is a pointer to FILE.
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Value *emitFPutC(Value *Char, Value *File, IRBuilderBase &B,
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const TargetLibraryInfo *TLI);
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/// Emit a call to the fputs 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, IRBuilderBase &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 'size_t', and File is a pointer to FILE.
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Value *emitFWrite(Value *Ptr, Value *Size, Value *File, IRBuilderBase &B,
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const DataLayout &DL, const TargetLibraryInfo *TLI);
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/// Emit a call to the malloc function.
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Value *emitMalloc(Value *Num, IRBuilderBase &B, const DataLayout &DL,
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const TargetLibraryInfo *TLI);
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/// Emit a call to the calloc function.
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Value *emitCalloc(Value *Num, Value *Size, IRBuilderBase &B,
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const TargetLibraryInfo &TLI);
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/// Emit a call to the hot/cold operator new function.
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Value *emitHotColdNew(Value *Num, IRBuilderBase &B,
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const TargetLibraryInfo *TLI, LibFunc NewFunc,
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uint8_t HotCold);
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Value *emitHotColdNewNoThrow(Value *Num, Value *NoThrow, IRBuilderBase &B,
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const TargetLibraryInfo *TLI, LibFunc NewFunc,
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uint8_t HotCold);
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Value *emitHotColdNewAligned(Value *Num, Value *Align, IRBuilderBase &B,
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const TargetLibraryInfo *TLI, LibFunc NewFunc,
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uint8_t HotCold);
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Value *emitHotColdNewAlignedNoThrow(Value *Num, Value *Align, Value *NoThrow,
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IRBuilderBase &B,
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const TargetLibraryInfo *TLI,
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LibFunc NewFunc, uint8_t HotCold);
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Value *emitHotColdSizeReturningNew(Value *Num, IRBuilderBase &B,
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const TargetLibraryInfo *TLI,
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LibFunc NewFunc, uint8_t HotCold);
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Value *emitHotColdSizeReturningNewAligned(Value *Num, Value *Align,
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IRBuilderBase &B,
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const TargetLibraryInfo *TLI,
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LibFunc NewFunc, uint8_t HotCold);
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}
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#endif
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