| //=====-- NVPTXTargetStreamer.h - NVPTX Target Streamer ------*- 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIB_TARGET_NVPTX_MCTARGETDESC_NVPTXTARGETSTREAMER_H |
| #define LLVM_LIB_TARGET_NVPTX_MCTARGETDESC_NVPTXTARGETSTREAMER_H |
| |
| #include "llvm/MC/MCStreamer.h" |
| |
| namespace llvm { |
| class MCSection; |
| |
| /// Implments NVPTX-specific streamer. |
| class NVPTXTargetStreamer : public MCTargetStreamer { |
| private: |
| SmallVector<std::string, 4> DwarfFiles; |
| bool HasSections = false; |
| |
| public: |
| NVPTXTargetStreamer(MCStreamer &S); |
| ~NVPTXTargetStreamer() override; |
| |
| /// Outputs the list of the DWARF '.file' directives to the streamer. |
| void outputDwarfFileDirectives(); |
| /// Close last section. |
| void closeLastSection(); |
| |
| /// Record DWARF file directives for later output. |
| /// According to PTX ISA, CUDA Toolkit documentation, 11.5.3. Debugging |
| /// Directives: .file |
| /// (http://docs.nvidia.com/cuda/parallel-thread-execution/index.html#debugging-directives-file), |
| /// The .file directive is allowed only in the outermost scope, i.e., at the |
| /// same level as kernel and device function declarations. Also, the order of |
| /// the .loc and .file directive does not matter, .file directives may follow |
| /// the .loc directives where the file is referenced. |
| /// LLVM emits .file directives immediately the location debug info is |
| /// emitted, i.e. they may be emitted inside functions. We gather all these |
| /// directives and emit them outside of the sections and, thus, outside of the |
| /// functions. |
| void emitDwarfFileDirective(StringRef Directive) override; |
| void changeSection(const MCSection *CurSection, MCSection *Section, |
| const MCExpr *SubSection, raw_ostream &OS) override; |
| /// Emit the bytes in \p Data into the output. |
| /// |
| /// This is used to emit bytes in \p Data as sequence of .byte directives. |
| void emitRawBytes(StringRef Data) override; |
| }; |
| |
| } // end namespace llvm |
| |
| #endif |