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Add support to attach debug info to an instruction. 

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llvm-svn: 83399
This commit is contained in:
Devang Patel 2009-10-06 18:36:08 +00:00
parent 273cdf096c
commit 5d90d62701
4 changed files with 46 additions and 12 deletions
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17
clang/lib/CodeGen/CGDebugInfo.cpp
View File

@ -879,7 +879,7 @@ void CGDebugInfo::EmitFunctionStart(const char *Name, QualType ReturnType,
getOrCreateType(ReturnType, Unit),
Fn->hasInternalLinkage(), true/*definition*/);
DebugFactory.InsertSubprogramStart(SP, Builder.GetInsertBlock());
// DebugFactory.InsertSubprogramStart(SP, Builder.GetInsertBlock());
// Push function on region stack.
RegionStack.push_back(SP);
@ -903,8 +903,19 @@ void CGDebugInfo::EmitStopPoint(llvm::Function *Fn, CGBuilderTy &Builder) {
// Get the appropriate compile unit.
llvm::DICompileUnit Unit = getOrCreateCompileUnit(CurLoc);
PresumedLoc PLoc = SM.getPresumedLoc(CurLoc);
#ifdef ATTACH_DEBUG_INFO_TO_AN_INSN
llvm::DIDescriptor DR = RegionStack.back();
llvm::DIScope DS = llvm::DIScope(DR.getNode());
llvm::DILocation DO(NULL);
llvm::DILocation DL =
DebugFactory.CreateLocation(PLoc.getLine(), PLoc.getColumn(),
DS, DO);
Builder.SetCurrentDebugLocation(DL.getNode());
#else
DebugFactory.InsertStopPoint(Unit, PLoc.getLine(), PLoc.getColumn(),
Builder.GetInsertBlock());
#endif
}
/// EmitRegionStart- Constructs the debug code for entering a declarative
@ -915,7 +926,9 @@ void CGDebugInfo::EmitRegionStart(llvm::Function *Fn, CGBuilderTy &Builder) {
D = RegionStack.back();
D = DebugFactory.CreateLexicalBlock(D);
RegionStack.push_back(D);
#ifndef ATTACH_DEBUG_INFO_TO_AN_INSN
DebugFactory.InsertRegionStart(D, Builder.GetInsertBlock());
#endif
}
/// EmitRegionEnd - Constructs the debug code for exiting a declarative
@ -926,7 +939,9 @@ void CGDebugInfo::EmitRegionEnd(llvm::Function *Fn, CGBuilderTy &Builder) {
// Provide an region stop point.
EmitStopPoint(Fn, Builder);
#ifndef ATTACH_DEBUG_INFO_TO_AN_INSN
DebugFactory.InsertRegionEnd(RegionStack.back(), Builder.GetInsertBlock());
#endif
RegionStack.pop_back();
}

1
clang/lib/CodeGen/CGDebugInfo.h
View File

@ -148,4 +148,5 @@ private:
} // namespace CodeGen
} // namespace clang
#endif

6
clang/lib/CodeGen/CGExpr.cpp
View File

@ -31,7 +31,11 @@ llvm::AllocaInst *CodeGenFunction::CreateTempAlloca(const llvm::Type *Ty,
const char *Name) {
if (!Builder.isNamePreserving())
Name = "";
return new llvm::AllocaInst(Ty, 0, Name, AllocaInsertPt);
llvm::AllocaInst *AI = new llvm::AllocaInst(Ty, 0, Name, AllocaInsertPt);
#ifdef ATTACH_DEBUG_INFO_TO_AN_INSN
Builder.SetDebugLocation(AI);
#endif
return AI;
}
/// EvaluateExprAsBool - Perform the usual unary conversions on the specified

34
clang/lib/CodeGen/CGStmt.cpp
View File

@ -148,12 +148,13 @@ RValue CodeGenFunction::EmitCompoundStmt(const CompoundStmt &S, bool GetLast,
CGDebugInfo *DI = getDebugInfo();
if (DI) {
#ifdef ATTACH_DEBUG_INFO_TO_AN_INSN
DI->setLocation(S.getLBracLoc());
DI->EmitRegionStart(CurFn, Builder);
#else
EnsureInsertPoint();
DI->setLocation(S.getLBracLoc());
// FIXME: The llvm backend is currently not ready to deal with region_end
// for block scoping. In the presence of always_inline functions it gets so
// confused that it doesn't emit any debug info. Just disable this for now.
//DI->EmitRegionStart(CurFn, Builder);
#endif
}
// Keep track of the current cleanup stack depth.
@ -166,13 +167,13 @@ RValue CodeGenFunction::EmitCompoundStmt(const CompoundStmt &S, bool GetLast,
EmitStmt(*I);
if (DI) {
#ifdef ATTACH_DEBUG_INFO_TO_AN_INSN
DI->setLocation(S.getLBracLoc());
DI->EmitRegionEnd(CurFn, Builder);
#else
EnsureInsertPoint();
DI->setLocation(S.getRBracLoc());
// FIXME: The llvm backend is currently not ready to deal with region_end
// for block scoping. In the presence of always_inline functions it gets so
// confused that it doesn't emit any debug info. Just disable this for now.
//DI->EmitRegionEnd(CurFn, Builder);
DI->setLocation(S.getLBracLoc());
#endif
}
RValue RV;
@ -478,6 +479,13 @@ void CodeGenFunction::EmitForStmt(const ForStmt &S) {
BreakContinueStack.push_back(BreakContinue(AfterFor, ContinueBlock));
// If the condition is true, execute the body of the for stmt.
#ifdef ATTACH_DEBUG_INFO_TO_AN_INSN
CGDebugInfo *DI = getDebugInfo();
if (DI) {
DI->setLocation(S.getSourceRange().getBegin());
DI->EmitRegionStart(CurFn, Builder);
}
#endif
EmitStmt(S.getBody());
BreakContinueStack.pop_back();
@ -490,6 +498,12 @@ void CodeGenFunction::EmitForStmt(const ForStmt &S) {
// Finally, branch back up to the condition for the next iteration.
EmitBranch(CondBlock);
#ifdef ATTACH_DEBUG_INFO_TO_AN_INSN
if (DI) {
DI->setLocation(S.getSourceRange().getEnd());
DI->EmitRegionEnd(CurFn, Builder);
}
#endif
// Emit the fall-through block.
EmitBlock(AfterFor, true);