const TargetInstrDesc &II = TII.get(TargetInstrInfo::DBG_LABEL);
ID = DW->RecordInlinedFnEnd(Subprogram);
if (ID)
- // If ID is 0 then this was not an end of inlined region.
+ // Returned ID is 0 if this is unbalanced "end of inlined
+ // scope". This could happen if optimizer eats dbg intrinsics
+ // or "beginning of inlined scope" is not recoginized due to
+ // missing location info. In such cases, do ignore this region.end.
BuildMI(MBB, DL, II).addImm(ID);
} else {
const TargetInstrDesc &II = TII.get(TargetInstrInfo::DBG_LABEL);
unsigned SrcFile = DW->getOrCreateSourceID(CompileUnit.getDirectory(Dir),
CompileUnit.getFilename(FN));
- if (!Subprogram.describes(MF.getFunction()) && !PrevLoc.isUnknown()) {
+ if (!Subprogram.describes(MF.getFunction())) {
// This is a beginning of an inlined function.
+ // If llvm.dbg.func.start is seen in a new block before any
+ // llvm.dbg.stoppoint intrinsic then the location info is unknown.
+ // FIXME : Why DebugLoc is reset at the beginning of each block ?
+ if (PrevLoc.isUnknown())
+ return true;
// Record the source line.
unsigned Line = Subprogram.getLineNumber();
unsigned LabelID = DW->RecordSourceLine(Line, 0, SrcFile);
if (Fast) {
unsigned ID = DW->RecordInlinedFnEnd(Subprogram);
if (ID != 0)
+ // Returned ID is 0 if this is unbalanced "end of inlined
+ // scope". This could happen if optimizer eats dbg intrinsics
+ // or "beginning of inlined scope" is not recoginized due to
+ // missing location info. In such cases, do ignore this region.end.
DAG.setRoot(DAG.getLabel(ISD::DBG_LABEL, getCurDebugLoc(),
getRoot(), ID));
}
if (!Subprogram.describes(MF.getFunction())) {
// This is a beginning of an inlined function.
+ // If llvm.dbg.func.start is seen in a new block before any
+ // llvm.dbg.stoppoint intrinsic then the location info is unknown.
+ // FIXME : Why DebugLoc is reset at the beginning of each block ?
+ if (PrevLoc.isUnknown())
+ return 0;
+
// Record the source line.
unsigned Line = Subprogram.getLineNumber();
unsigned LabelID = DW->RecordSourceLine(Line, 0, SrcFile);