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Do not treat beginning of inlined scope as beginning of normal function scope if the location info is missing. 

Insetad of doing ...
if (inlined_subroutine && known_location)
  DW_TAG_inline_subroutine
else
  DW_TAG_subprogram

do

if (inlined_subroutine) {
 if (known_location)
   DW_TAG_inline_subroutine
} else {
 DW_TAG_subprogram
}

llvm-svn: 69300
This commit is contained in:
Devang Patel 2009-04-16 17:55:30 +00:00
parent 1a99f441e6
commit dab01f3fd6
2 changed files with 20 additions and 2 deletions
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12
llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
View File

@ -362,7 +362,10 @@ bool FastISel::SelectCall(User *I) {
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);
@ -387,9 +390,14 @@ bool FastISel::SelectCall(User *I) {
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);

10
llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
View File

@ -3966,6 +3966,10 @@ SelectionDAGLowering::visitIntrinsicCall(CallInst &I, unsigned Intrinsic) {
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));
}
@ -4000,6 +4004,12 @@ SelectionDAGLowering::visitIntrinsicCall(CallInst &I, unsigned Intrinsic) {
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);