diff options
| author | Stephen Hines <srhines@google.com> | 2019-07-02 16:25:20 -0700 |
|---|---|---|
| committer | Ali B <abittin@gmail.com> | 2019-07-05 19:33:16 +0300 |
| commit | 9afee4e65dc5f9f5eb371683729ff67b8df81d03 (patch) | |
| tree | 4cf241d6c9044f91ee8c06e6920174d06f8de0b6 /clang-r353983e/include/llvm/CodeGen/GCMetadataPrinter.h | |
| parent | 2f19bd722c4c825320d1511c1ed83161b7f95d51 (diff) | |
clang 9.0.5 (based on r353983e) from build 5696680.
Bug: http://b/135931688
Bug: http://b/136008926
Test: N/A
Change-Id: I922d17410047d2e2df4625615352c588ee71b203
Diffstat (limited to 'clang-r353983e/include/llvm/CodeGen/GCMetadataPrinter.h')
| -rw-r--r-- | clang-r353983e/include/llvm/CodeGen/GCMetadataPrinter.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/clang-r353983e/include/llvm/CodeGen/GCMetadataPrinter.h b/clang-r353983e/include/llvm/CodeGen/GCMetadataPrinter.h new file mode 100644 index 00000000..f9527c9f --- /dev/null +++ b/clang-r353983e/include/llvm/CodeGen/GCMetadataPrinter.h @@ -0,0 +1,72 @@ +//===- llvm/CodeGen/GCMetadataPrinter.h - Prints asm GC tables --*- C++ -*-===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// The abstract base class GCMetadataPrinter supports writing GC metadata tables +// as assembly code. This is a separate class from GCStrategy in order to allow +// users of the LLVM JIT to avoid linking with the AsmWriter. +// +// Subclasses of GCMetadataPrinter must be registered using the +// GCMetadataPrinterRegistry. This is separate from the GCStrategy itself +// because these subclasses are logically plugins for the AsmWriter. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_CODEGEN_GCMETADATAPRINTER_H +#define LLVM_CODEGEN_GCMETADATAPRINTER_H + +#include "llvm/Support/Registry.h" + +namespace llvm { + +class AsmPrinter; +class GCMetadataPrinter; +class GCModuleInfo; +class GCStrategy; +class Module; +class StackMaps; + +/// GCMetadataPrinterRegistry - The GC assembly printer registry uses all the +/// defaults from Registry. +using GCMetadataPrinterRegistry = Registry<GCMetadataPrinter>; + +/// GCMetadataPrinter - Emits GC metadata as assembly code. Instances are +/// created, managed, and owned by the AsmPrinter. +class GCMetadataPrinter { +private: + friend class AsmPrinter; + + GCStrategy *S; + +protected: + // May only be subclassed. + GCMetadataPrinter(); + +public: + GCMetadataPrinter(const GCMetadataPrinter &) = delete; + GCMetadataPrinter &operator=(const GCMetadataPrinter &) = delete; + virtual ~GCMetadataPrinter(); + + GCStrategy &getStrategy() { return *S; } + + /// Called before the assembly for the module is generated by + /// the AsmPrinter (but after target specific hooks.) + virtual void beginAssembly(Module &M, GCModuleInfo &Info, AsmPrinter &AP) {} + + /// Called after the assembly for the module is generated by + /// the AsmPrinter (but before target specific hooks) + virtual void finishAssembly(Module &M, GCModuleInfo &Info, AsmPrinter &AP) {} + + /// Called when the stack maps are generated. Return true if + /// stack maps with a custom format are generated. Otherwise + /// returns false and the default format will be used. + virtual bool emitStackMaps(StackMaps &SM, AsmPrinter &AP) { return false; } +}; + +} // end namespace llvm + +#endif // LLVM_CODEGEN_GCMETADATAPRINTER_H |
