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Gracefully handle various scopes while recording source line info. 

llvm-svn: 83317
This commit is contained in:
Devang Patel 2009-10-05 18:03:19 +00:00
parent d7eb7179a2
commit 2089d16140
1 changed files with 21 additions and 4 deletions
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25
llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@ -1958,16 +1958,33 @@ unsigned DwarfDebug::RecordSourceLine(Value *V, unsigned Line, unsigned Col) {
/// label. Returns a unique label ID used to generate a label and provide
/// correspondence to the source line list.
unsigned DwarfDebug::RecordSourceLine(unsigned Line, unsigned Col,
MDNode *Scope) {
MDNode *S) {
if (!MMI)
return 0;
if (TimePassesIsEnabled)
DebugTimer->startTimer();
DICompileUnit CU(Scope);
unsigned Src = GetOrCreateSourceID(CU.getDirectory(),
CU.getFilename());
const char *Dir = NULL;
const char *Fn = NULL;
DIDescriptor Scope(S);
if (Scope.isCompileUnit()) {
DICompileUnit CU(S);
Dir = CU.getDirectory();
Fn = CU.getFilename();
} else if (Scope.isSubprogram()) {
DISubprogram SP(S);
Dir = SP.getDirectory();
Fn = SP.getFilename();
} else if (Scope.isLexicalBlock()) {
DILexicalBlock DB(S);
Dir = DB.getDirectory();
Fn = DB.getFilename();
} else
assert (0 && "Unexpected scope info");
unsigned Src = GetOrCreateSourceID(Dir, Fn);
unsigned ID = MMI->NextLabelID();
Lines.push_back(SrcLineInfo(Line, Col, Src, ID));