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pass manager do it's thing." Fixes crash when compiling -g files and suppresses dwarf statements if no debug info is present. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25100 91177308-0d34-0410-b5e6-96231b3b80d8
70 lines
2.3 KiB
C++
70 lines
2.3 KiB
C++
//===-- llvm/CodeGen/MachineDebugInfo.cpp -----------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by James M. Laskey and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Collect debug information for a module. This information should be in a
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// neutral form that can be used by different debugging schemes.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/MachineDebugInfo.h"
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using namespace llvm;
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// Handle the Pass registration stuff necessary to use TargetData's.
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namespace {
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RegisterPass<MachineDebugInfo> X("machinedebuginfo", "Debug Information");
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}
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/// doInitialization - Initialize the debug state for a new module.
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///
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bool MachineDebugInfo::doInitialization() {
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return false;
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}
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/// doFinalization - Tear down the debug state after completion of a module.
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///
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bool MachineDebugInfo::doFinalization() {
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return false;
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}
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/// getUniqueSourceID - Register a source file with debug info. Returns an id.
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///
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unsigned MachineDebugInfo::getUniqueSourceID(const std::string &fname,
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const std::string &dirname) {
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// Compose a key
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const std::string path = dirname + "/" + fname;
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// Check if the source file is already recorded
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std::map<std::string, unsigned>::iterator
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SMI = SourceMap.lower_bound(path);
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// If already there return existing id
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if (SMI != SourceMap.end() && SMI->first == path) return SMI->second;
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// Bump up the count
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++SourceCount;
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// Record the count
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SourceMap.insert(SMI, std::make_pair(path, SourceCount));
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// Return id
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return SourceCount;
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}
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/// getSourceFiles - Return a vector of files. Vector index + 1 equals id.
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///
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std::vector<std::string> MachineDebugInfo::getSourceFiles() const {
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std::vector<std::string> Sources(SourceCount);
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for (std::map<std::string, unsigned>::const_iterator SMI = SourceMap.begin(),
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E = SourceMap.end();
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SMI != E; SMI++) {
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unsigned Index = SMI->second - 1;
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const std::string &Path = SMI->first;
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Sources[Index] = Path;
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}
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return Sources;
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}
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