89 lines
3.4 KiB
C++
89 lines
3.4 KiB
C++
//===-- llvm/IR/Mangler.h - Self-contained name mangler ---------*- 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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// Unified name mangler for various backends.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_IR_MANGLER_H
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#define LLVM_IR_MANGLER_H
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/Compiler.h"
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namespace llvm {
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class DataLayout;
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class GlobalValue;
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template <typename T> class SmallVectorImpl;
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class Triple;
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class Twine;
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class raw_ostream;
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// TODO: The weird assignment of HybridPatchableTargetSuffix below is a
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// temporary workaround for a linker failure that is only hit when compiling
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// llvm for arm64ec on windows. The description and context of the issue is at
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// https://github.com/llvm/llvm-project/issues/143575.
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// An upstream MSVC bug is filed at
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// https://developercommunity.visualstudio.com/t/MSVC-Linker-Issue-When-Cross-
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// Compiling-L/10920141.
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constexpr char HybridPatchableTargetSuffixArr[] = "$hp_target";
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constexpr std::string_view HybridPatchableTargetSuffix =
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HybridPatchableTargetSuffixArr;
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class Mangler {
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/// We need to give global values the same name every time they are mangled.
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/// This keeps track of the number we give to anonymous ones.
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mutable DenseMap<const GlobalValue*, unsigned> AnonGlobalIDs;
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public:
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/// Print the appropriate prefix and the specified global variable's name.
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/// If the global variable doesn't have a name, this fills in a unique name
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/// for the global.
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LLVM_ABI void getNameWithPrefix(raw_ostream &OS, const GlobalValue *GV,
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bool CannotUsePrivateLabel) const;
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LLVM_ABI void getNameWithPrefix(SmallVectorImpl<char> &OutName,
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const GlobalValue *GV,
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bool CannotUsePrivateLabel) const;
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/// Print the appropriate prefix and the specified name as the global variable
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/// name. GVName must not be empty.
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LLVM_ABI static void getNameWithPrefix(raw_ostream &OS, const Twine &GVName,
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const DataLayout &DL);
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LLVM_ABI static void getNameWithPrefix(SmallVectorImpl<char> &OutName,
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const Twine &GVName,
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const DataLayout &DL);
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};
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LLVM_ABI void emitLinkerFlagsForGlobalCOFF(raw_ostream &OS,
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const GlobalValue *GV,
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const Triple &TT, Mangler &Mangler);
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LLVM_ABI void emitLinkerFlagsForUsedCOFF(raw_ostream &OS, const GlobalValue *GV,
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const Triple &T, Mangler &M);
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/// Returns the ARM64EC mangled function name unless the input is already
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/// mangled.
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LLVM_ABI std::optional<std::string>
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getArm64ECMangledFunctionName(StringRef Name);
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/// Returns the ARM64EC demangled function name, unless the input is not
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/// mangled.
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LLVM_ABI std::optional<std::string>
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getArm64ECDemangledFunctionName(StringRef Name);
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/// Check if an ARM64EC function name is mangled.
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bool inline isArm64ECMangledFunctionName(StringRef Name) {
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return Name[0] == '#' || (Name[0] == '?' && Name.contains("@$$h"));
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}
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} // End llvm namespace
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#endif
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