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//=====-- 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
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