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https://github.com/c64scene-ar/llvm-6502.git
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2e9d5f912a
use the old behavior, the flag is -O0. This change allows for finer-grained control over which optimizations are run at different -O levels. Most of this work was pretty mechanical. The majority of the fixes came from verifying that a "fast" variable wasn't used anymore. The JIT still uses a "Fast" flag. I'm not 100% sure if it's necessary to change it there... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70270 91177308-0d34-0410-b5e6-96231b3b80d8
132 lines
4.4 KiB
C++
132 lines
4.4 KiB
C++
//===-- llvm/CodeGen/DwarfWriter.h - Dwarf Framework ------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains support for writing Dwarf debug and exception info into
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// asm files. For Details on the Dwarf 3 specfication see DWARF Debugging
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// Information Format V.3 reference manual http://dwarf.freestandards.org ,
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//
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// The role of the Dwarf Writer class is to extract information from the
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// MachineModuleInfo object, organize it in Dwarf form and then emit it into asm
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// the current asm file using data and high level Dwarf directives.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CODEGEN_DWARFWRITER_H
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#define LLVM_CODEGEN_DWARFWRITER_H
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#include "llvm/Pass.h"
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namespace llvm {
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class AsmPrinter;
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class DwarfDebug;
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class DwarfException;
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class MachineModuleInfo;
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class MachineFunction;
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class MachineInstr;
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class Value;
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class Module;
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class GlobalVariable;
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class TargetAsmInfo;
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class raw_ostream;
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class Instruction;
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class DISubprogram;
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class DIVariable;
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//===----------------------------------------------------------------------===//
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// DwarfWriter - Emits Dwarf debug and exception handling directives.
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//
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class DwarfWriter : public ImmutablePass {
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private:
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/// DD - Provides the DwarfWriter debug implementation.
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///
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DwarfDebug *DD;
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/// DE - Provides the DwarfWriter exception implementation.
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///
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DwarfException *DE;
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public:
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static char ID; // Pass identification, replacement for typeid
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DwarfWriter();
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virtual ~DwarfWriter();
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//===--------------------------------------------------------------------===//
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// Main entry points.
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//
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/// BeginModule - Emit all Dwarf sections that should come prior to the
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/// content.
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void BeginModule(Module *M, MachineModuleInfo *MMI, raw_ostream &OS,
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AsmPrinter *A, const TargetAsmInfo *T);
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/// EndModule - Emit all Dwarf sections that should come after the content.
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///
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void EndModule();
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/// BeginFunction - Gather pre-function debug information. Assumes being
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/// emitted immediately after the function entry point.
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void BeginFunction(MachineFunction *MF);
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/// EndFunction - Gather and emit post-function debug information.
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///
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void EndFunction(MachineFunction *MF);
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/// ValidDebugInfo - Return true if V represents valid debug info value.
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bool ValidDebugInfo(Value *V, unsigned OptLevel);
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/// RecordSourceLine - Register a source line with debug info. Returns a
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/// unique label ID used to generate a label and provide correspondence to
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/// the source line list.
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unsigned RecordSourceLine(unsigned Line, unsigned Col, unsigned Src);
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/// getOrCreateSourceID - Look up the source id with the given directory and
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/// source file names. If none currently exists, create a new id and insert it
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/// in the SourceIds map. This can update DirectoryIds and SourceFileIds maps
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/// as well.
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unsigned getOrCreateSourceID(const std::string &DirName,
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const std::string &FileName);
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/// RecordRegionStart - Indicate the start of a region.
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unsigned RecordRegionStart(GlobalVariable *V);
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/// RecordRegionEnd - Indicate the end of a region.
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unsigned RecordRegionEnd(GlobalVariable *V);
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/// getRecordSourceLineCount - Count source lines.
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unsigned getRecordSourceLineCount();
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/// RecordVariable - Indicate the declaration of a local variable.
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///
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void RecordVariable(GlobalVariable *GV, unsigned FrameIndex,
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const MachineInstr *MI);
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/// ShouldEmitDwarfDebug - Returns true if Dwarf debugging declarations should
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/// be emitted.
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bool ShouldEmitDwarfDebug() const;
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//// RecordInlinedFnStart - Indicate the start of a inlined function.
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void RecordInlinedFnStart(Instruction *I, DISubprogram &SP, unsigned LabelID,
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unsigned Src, unsigned Line, unsigned Col);
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/// RecordInlinedFnEnd - Indicate the end of inlined subroutine.
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unsigned RecordInlinedFnEnd(DISubprogram &SP);
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/// RecordVariableScope - Record scope for the variable declared by
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/// DeclareMI. DeclareMI must describe TargetInstrInfo::DECLARE.
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void RecordVariableScope(DIVariable &DV, const MachineInstr *DeclareMI);
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};
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} // end llvm namespace
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#endif
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