r225000 - Reapply "DebugInfo: Generalize debug info location handling"

Jay Foad jay.foad at gmail.com
Tue Dec 30 16:01:50 PST 2014


Hi David,

This commit seems to have introduced one regression in "ninja
check-clang" on PowerPC64 Linux, using GCC 4.8.3 as host compiler:

FAIL: Clang :: CodeGenCXX/debug-info-line.cpp (2158 of 7931)
******************** TEST 'Clang :: CodeGenCXX/debug-info-line.cpp'
FAILED ********************
Script:
--
/home/foad/llvm-project/build/./bin/clang -cc1 -internal-isystem
/home/foad/llvm-project/build/bin/../lib/clang/3.6.0/include
-nostdsysteminc -g -std=c++11 -S -emit-llvm
/home/foad/llvm-project/llvm/tools/clang/test/CodeGenCXX/debug-info-line.cpp
-o - | /home/foad/llvm-project/build/./bin/FileCheck
/home/foad/llvm-project/llvm/tools/clang/test/CodeGenCXX/debug-info-line.cpp
/home/foad/llvm-project/build/./bin/clang -cc1 -internal-isystem
/home/foad/llvm-project/build/bin/../lib/clang/3.6.0/include
-nostdsysteminc -triple i686-linux-gnu -g -std=c++11 -S -emit-llvm
/home/foad/llvm-project/llvm/tools/clang/test/CodeGenCXX/debug-info-line.cpp
-o - | /home/foad/llvm-project/build/./bin/FileCheck
/home/foad/llvm-project/llvm/tools/clang/test/CodeGenCXX/debug-info-line.cpp
--
Exit Code: 1

Command Output (stderr):
--
/home/foad/llvm-project/llvm/tools/clang/test/CodeGenCXX/debug-info-line.cpp:706:12:
warning: empty parentheses interpreted as a function declaration
  int *src1();
           ^~
/home/foad/llvm-project/llvm/tools/clang/test/CodeGenCXX/debug-info-line.cpp:706:12:
note: replace parentheses with an initializer to declare a variable
  int *src1();
           ^~
            = nullptr
/home/foad/llvm-project/llvm/tools/clang/test/CodeGenCXX/debug-info-line.cpp:707:11:
warning: empty parentheses interpreted as a function declaration
  int src2();
          ^~
/home/foad/llvm-project/llvm/tools/clang/test/CodeGenCXX/debug-info-line.cpp:707:11:
note: replace parentheses with an initializer to declare a variable
  int src2();
          ^~
           = 0
/home/foad/llvm-project/llvm/tools/clang/test/CodeGenCXX/debug-info-line.cpp:807:11:
warning: empty parentheses interpreted as a function declaration
  int src2();
          ^~
/home/foad/llvm-project/llvm/tools/clang/test/CodeGenCXX/debug-info-line.cpp:807:11:
note: replace parentheses with an initializer to declare a variable
  int src2();
          ^~
           = 0
/home/foad/llvm-project/llvm/tools/clang/test/CodeGenCXX/debug-info-line.cpp:907:11:
warning: empty parentheses interpreted as a function declaration
  int src2();
          ^~
/home/foad/llvm-project/llvm/tools/clang/test/CodeGenCXX/debug-info-line.cpp:907:11:
note: replace parentheses with an initializer to declare a variable
  int src2();
          ^~
           = 0
/home/foad/llvm-project/llvm/tools/clang/test/CodeGenCXX/debug-info-line.cpp:1008:17:
warning: empty parentheses interpreted as a function declaration
  void *void_src();
                ^~
/home/foad/llvm-project/llvm/tools/clang/test/CodeGenCXX/debug-info-line.cpp:1008:17:
note: replace parentheses with an initializer to declare a variable
  void *void_src();
                ^~
                 = nullptr
/home/foad/llvm-project/llvm/tools/clang/test/CodeGenCXX/debug-info-line.cpp:1205:12:
warning: empty parentheses interpreted as a function declaration
  int f12_1();
           ^~
/home/foad/llvm-project/llvm/tools/clang/test/CodeGenCXX/debug-info-line.cpp:1205:12:
note: replace parentheses with an initializer to declare a variable
  int f12_1();
           ^~
            = 0
6 warnings generated.
/home/foad/llvm-project/llvm/tools/clang/test/CodeGenCXX/debug-info-line.cpp:126:11:
error: expected string not found in input
// CHECK: call i32 {{.*}} !dbg [[DBG_F12:!.*]]
          ^
<stdin>:235:8: note: scanning from here
define void @_Z3f12v() #0 {
       ^
<stdin>:236:24: note: possible intended match here
 %1 = call signext i32 @_Z5f12_1v(), !dbg !115
                       ^

--

Thanks,
Jay.

On 30 December 2014 at 19:39, David Blaikie <dblaikie at gmail.com> wrote:
> Author: dblaikie
> Date: Tue Dec 30 13:39:33 2014
> New Revision: 225000
>
> URL: http://llvm.org/viewvc/llvm-project?rev=225000&view=rev
> Log:
> Reapply "DebugInfo: Generalize debug info location handling"
>
> Originally committed in r224385 and reverted in r224441 due to concerns
> this change might've introduced a crash. Turns out this change fixes the
> crash introduced by one of my earlier more specific location handling
> changes (those specific fixes are reverted by this patch, in favor of
> the more general solution).
>
> Recommitted in r224941 and reverted in r224970 after it caused a crash
> when building compiler-rt. Looks to be due to this change zeroing out
> the debug location when emitting default arguments (which were meant to
> inherit their outer expression's location) thus creating call
> instructions without locations - these create problems for inlining and
> must not be created. That is fixed and tested in this version of the
> change.
>
> Original commit message:
>
> This is a more scalable (fixed in mostly one place, rather than many
> places that will need constant improvement/maintenance) solution to
> several commits I've made recently to increase source fidelity for
> subexpressions.
>
> This resetting had to be done at the DebugLoc level (not the
> SourceLocation level) to preserve scoping information (if the resetting
> was done with CGDebugInfo::EmitLocation, it would've caused the tail end
> of an expression's codegen to end up in a potentially different scope
> than the start, even though it was at the same source location). The
> drawback to this is that it might leave CGDebugInfo out of sync. Ideally
> CGDebugInfo shouldn't have a duplicate sense of the current
> SourceLocation, but for now it seems it does... - I don't think I'm
> going to tackle removing that just now.
>
> I expect this'll probably cause some more buildbot fallout & I'll
> investigate that as it comes up.
>
> Also these sort of improvements might be starting to show a weakness/bug
> in LLVM's line table handling: we don't correctly emit is_stmt for
> statements, we just put it on every line table entry. This means one
> statement split over multiple lines appears as multiple 'statements' and
> two statements on one line (without column info) are treated as one
> statement.
>
> I don't think we have any IR representation of statements that would
> help us distinguish these cases and identify the beginning of each
> statement - so that might be something we need to add (possibly to the
> lexical scope chain - a scope for each statement). This does cause some
> problems for GDB and possibly other DWARF consumers.
>
> Modified:
>     cfe/trunk/lib/CodeGen/CGBlocks.cpp
>     cfe/trunk/lib/CodeGen/CGClass.cpp
>     cfe/trunk/lib/CodeGen/CGCleanup.cpp
>     cfe/trunk/lib/CodeGen/CGDebugInfo.cpp
>     cfe/trunk/lib/CodeGen/CGDebugInfo.h
>     cfe/trunk/lib/CodeGen/CGDecl.cpp
>     cfe/trunk/lib/CodeGen/CGDeclCXX.cpp
>     cfe/trunk/lib/CodeGen/CGException.cpp
>     cfe/trunk/lib/CodeGen/CGExpr.cpp
>     cfe/trunk/lib/CodeGen/CGExprCXX.cpp
>     cfe/trunk/lib/CodeGen/CGExprComplex.cpp
>     cfe/trunk/lib/CodeGen/CGExprScalar.cpp
>     cfe/trunk/lib/CodeGen/CGStmt.cpp
>     cfe/trunk/lib/CodeGen/CGStmtOpenMP.cpp
>     cfe/trunk/lib/CodeGen/CodeGenFunction.h
>     cfe/trunk/test/CodeGenCXX/PR20038.cpp
>     cfe/trunk/test/CodeGenCXX/debug-info-line.cpp
>     cfe/trunk/test/CodeGenCXX/debug-info-scope.cpp
>
> Modified: cfe/trunk/lib/CodeGen/CGBlocks.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGBlocks.cpp?rev=225000&r1=224999&r2=225000&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGBlocks.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGBlocks.cpp Tue Dec 30 13:39:33 2014
> @@ -874,7 +874,7 @@ llvm::Value *CodeGenFunction::EmitBlockL
>        // locations of subexpressions in the initialization.
>        EmitExprAsInit(&l2r, &blockFieldPseudoVar,
>                       MakeAddrLValue(blockField, type, align),
> -                     /*captured by init*/ false, SourceLocation());
> +                     /*captured by init*/ false);
>      }
>
>      // Activate the cleanup if layout pushed one.
> @@ -1175,7 +1175,7 @@ CodeGenFunction::GenerateBlockFunction(G
>      Alloca->setAlignment(Align);
>      // Set the DebugLocation to empty, so the store is recognized as a
>      // frame setup instruction by llvm::DwarfDebug::beginFunction().
> -    NoLocation NL(*this, Builder);
> +    ApplyDebugLocation NL(*this);
>      Builder.CreateAlignedStore(BlockPointer, Alloca, Align);
>      BlockPointerDbgLoc = Alloca;
>    }
> @@ -1326,9 +1326,9 @@ CodeGenFunction::GenerateCopyHelperFunct
>                                            false,
>                                            false);
>    // Create a scope with an artificial location for the body of this function.
> -  ArtificialLocation AL(*this, Builder);
> +  ApplyDebugLocation NL(*this);
>    StartFunction(FD, C.VoidTy, Fn, FI, args);
> -  AL.Emit();
> +  ArtificialLocation AL(*this);
>
>    llvm::Type *structPtrTy = blockInfo.StructureType->getPointerTo();
>
> @@ -1497,9 +1497,9 @@ CodeGenFunction::GenerateDestroyHelperFu
>                                            nullptr, SC_Static,
>                                            false, false);
>    // Create a scope with an artificial location for the body of this function.
> -  ArtificialLocation AL(*this, Builder);
> +  ApplyDebugLocation NL(*this);
>    StartFunction(FD, C.VoidTy, Fn, FI, args);
> -  AL.Emit();
> +  ArtificialLocation AL(*this);
>
>    llvm::Type *structPtrTy = blockInfo.StructureType->getPointerTo();
>
>
> Modified: cfe/trunk/lib/CodeGen/CGClass.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGClass.cpp?rev=225000&r1=224999&r2=225000&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGClass.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGClass.cpp Tue Dec 30 13:39:33 2014
> @@ -544,6 +544,7 @@ static void EmitMemberInitializer(CodeGe
>                                    CXXCtorInitializer *MemberInit,
>                                    const CXXConstructorDecl *Constructor,
>                                    FunctionArgList &Args) {
> +  ApplyDebugLocation Loc(CGF, MemberInit->getMemberLocation());
>    assert(MemberInit->isAnyMemberInitializer() &&
>           "Must have member initializer!");
>    assert(MemberInit->getInit() && "Must have initializer!");
> @@ -597,26 +598,25 @@ static void EmitMemberInitializer(CodeGe
>    ArrayRef<VarDecl *> ArrayIndexes;
>    if (MemberInit->getNumArrayIndices())
>      ArrayIndexes = MemberInit->getArrayIndexes();
> -  CGF.EmitInitializerForField(Field, LHS, MemberInit->getInit(), ArrayIndexes,
> -                              MemberInit->getMemberLocation());
> +  ApplyDebugLocation DL(CGF, MemberInit->getMemberLocation());
> +  CGF.EmitInitializerForField(Field, LHS, MemberInit->getInit(), ArrayIndexes);
>  }
>
> -void CodeGenFunction::EmitInitializerForField(FieldDecl *Field, LValue LHS,
> -                                              Expr *Init,
> -                                              ArrayRef<VarDecl *> ArrayIndexes,
> -                                              SourceLocation DbgLoc) {
> +void CodeGenFunction::EmitInitializerForField(
> +    FieldDecl *Field, LValue LHS, Expr *Init,
> +    ArrayRef<VarDecl *> ArrayIndexes) {
>    QualType FieldType = Field->getType();
>    switch (getEvaluationKind(FieldType)) {
>    case TEK_Scalar:
>      if (LHS.isSimple()) {
> -      EmitExprAsInit(Init, Field, LHS, false, DbgLoc);
> +      EmitExprAsInit(Init, Field, LHS, false);
>      } else {
>        RValue RHS = RValue::get(EmitScalarExpr(Init));
>        EmitStoreThroughLValue(RHS, LHS);
>      }
>      break;
>    case TEK_Complex:
> -    EmitComplexExprIntoLValue(Init, LHS, /*isInit*/ true, DbgLoc);
> +    EmitComplexExprIntoLValue(Init, LHS, /*isInit*/ true);
>      break;
>    case TEK_Aggregate: {
>      llvm::Value *ArrayIndexVar = nullptr;
> @@ -783,8 +783,6 @@ void CodeGenFunction::EmitConstructorBod
>    // delegation optimization.
>    if (CtorType == Ctor_Complete && IsConstructorDelegationValid(Ctor) &&
>        CGM.getTarget().getCXXABI().hasConstructorVariants()) {
> -    if (CGDebugInfo *DI = getDebugInfo())
> -      DI->EmitLocation(Builder, Ctor->getLocEnd());
>      EmitDelegateCXXConstructorCall(Ctor, Ctor_Base, Args, Ctor->getLocEnd());
>      return;
>    }
>
> Modified: cfe/trunk/lib/CodeGen/CGCleanup.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGCleanup.cpp?rev=225000&r1=224999&r2=225000&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGCleanup.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGCleanup.cpp Tue Dec 30 13:39:33 2014
> @@ -861,10 +861,7 @@ void CodeGenFunction::PopCleanupBlock(bo
>
>    // Emit the EH cleanup if required.
>    if (RequiresEHCleanup) {
> -    CGDebugInfo *DI = getDebugInfo();
> -    SaveAndRestoreLocation AutoRestoreLocation(*this, Builder);
> -    if (DI)
> -      DI->EmitLocation(Builder, CurEHLocation);
> +    ApplyDebugLocation AutoRestoreLocation(*this, CurEHLocation);
>
>      CGBuilderTy::InsertPoint SavedIP = Builder.saveAndClearIP();
>
>
> Modified: cfe/trunk/lib/CodeGen/CGDebugInfo.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGDebugInfo.cpp?rev=225000&r1=224999&r2=225000&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGDebugInfo.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGDebugInfo.cpp Tue Dec 30 13:39:33 2014
> @@ -52,54 +52,38 @@ CGDebugInfo::~CGDebugInfo() {
>           "Region stack mismatch, stack not empty!");
>  }
>
> -SaveAndRestoreLocation::SaveAndRestoreLocation(CodeGenFunction &CGF,
> -                                               CGBuilderTy &B)
> -    : DI(CGF.getDebugInfo()), Builder(B) {
> -  if (DI) {
> -    SavedLoc = DI->getLocation();
> -    DI->CurLoc = SourceLocation();
> -  }
> -}
> -
> -SaveAndRestoreLocation::~SaveAndRestoreLocation() {
> -  if (DI)
> -    DI->EmitLocation(Builder, SavedLoc);
> -}
> -
> -NoLocation::NoLocation(CodeGenFunction &CGF, CGBuilderTy &B)
> -    : SaveAndRestoreLocation(CGF, B) {
> -  if (DI)
> -    Builder.SetCurrentDebugLocation(llvm::DebugLoc());
> -}
> -
> -NoLocation::~NoLocation() {
> -  if (DI)
> -    assert(Builder.getCurrentDebugLocation().isUnknown());
> -}
> -
> -ArtificialLocation::ArtificialLocation(CodeGenFunction &CGF, CGBuilderTy &B)
> -    : SaveAndRestoreLocation(CGF, B) {
> -  if (DI)
> -    Builder.SetCurrentDebugLocation(llvm::DebugLoc());
> -}
> -
> -void ArtificialLocation::Emit() {
> -  if (DI) {
> -    // Sync the Builder.
> -    DI->EmitLocation(Builder, SavedLoc);
> -    DI->CurLoc = SourceLocation();
> +ArtificialLocation::ArtificialLocation(CodeGenFunction &CGF)
> +    : ApplyDebugLocation(CGF) {
> +  if (auto *DI = CGF.getDebugInfo()) {
>      // Construct a location that has a valid scope, but no line info.
>      assert(!DI->LexicalBlockStack.empty());
>      llvm::DIDescriptor Scope(DI->LexicalBlockStack.back());
> -    Builder.SetCurrentDebugLocation(llvm::DebugLoc::get(0, 0, Scope));
> +    CGF.Builder.SetCurrentDebugLocation(llvm::DebugLoc::get(0, 0, Scope));
> +  }
> +}
> +
> +ApplyDebugLocation::ApplyDebugLocation(CodeGenFunction &CGF,
> +                                       SourceLocation TemporaryLocation,
> +                                       bool ForceColumnInfo)
> +    : CGF(CGF) {
> +  if (auto *DI = CGF.getDebugInfo()) {
> +    OriginalLocation = CGF.Builder.getCurrentDebugLocation();
> +    if (TemporaryLocation.isInvalid())
> +      CGF.Builder.SetCurrentDebugLocation(llvm::DebugLoc());
> +    else
> +      DI->EmitLocation(CGF.Builder, TemporaryLocation, ForceColumnInfo);
>    }
>  }
>
> -ArtificialLocation::~ArtificialLocation() {
> -  if (DI)
> -    assert(Builder.getCurrentDebugLocation().getLine() == 0);
> +ApplyDebugLocation::~ApplyDebugLocation() {
> +  // Query CGF so the location isn't overwritten when location updates are
> +  // temporarily disabled (for C++ default function arguments)
> +  if (CGF.getDebugInfo())
> +    CGF.Builder.SetCurrentDebugLocation(OriginalLocation);
>  }
>
> +/// ArtificialLocation - An RAII object that temporarily switches to
> +/// an artificial debug location that has a valid scope, but no line
>  void CGDebugInfo::setLocation(SourceLocation Loc) {
>    // If the new location isn't valid return.
>    if (Loc.isInvalid())
>
> Modified: cfe/trunk/lib/CodeGen/CGDebugInfo.h
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGDebugInfo.h?rev=225000&r1=224999&r2=225000&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGDebugInfo.h (original)
> +++ cfe/trunk/lib/CodeGen/CGDebugInfo.h Tue Dec 30 13:39:33 2014
> @@ -448,27 +448,16 @@ private:
>    }
>  };
>
> -/// SaveAndRestoreLocation - An RAII object saves the current location
> -/// and automatically restores it to the original value.
> -class SaveAndRestoreLocation {
> +class ApplyDebugLocation {
>  protected:
> -  SourceLocation SavedLoc;
> -  CGDebugInfo *DI;
> -  CGBuilderTy &Builder;
> -public:
> -  SaveAndRestoreLocation(CodeGenFunction &CGF, CGBuilderTy &B);
> -  /// Autorestore everything back to normal.
> -  ~SaveAndRestoreLocation();
> -};
> +  llvm::DebugLoc OriginalLocation;
> +  CodeGenFunction &CGF;
>
> -/// NoLocation - An RAII object that temporarily disables debug
> -/// locations. This is useful for emitting instructions that should be
> -/// counted towards the function prologue.
> -class NoLocation : public SaveAndRestoreLocation {
>  public:
> -  NoLocation(CodeGenFunction &CGF, CGBuilderTy &B);
> -  /// Autorestore everything back to normal.
> -  ~NoLocation();
> +  ApplyDebugLocation(CodeGenFunction &CGF,
> +                     SourceLocation TemporaryLocation = SourceLocation(),
> +                     bool ForceColumnInfo = false);
> +  ~ApplyDebugLocation();
>  };
>
>  /// ArtificialLocation - An RAII object that temporarily switches to
> @@ -482,16 +471,9 @@ public:
>  /// This is necessary because passing an empty SourceLocation to
>  /// CGDebugInfo::setLocation() will result in the last valid location
>  /// being reused.
> -class ArtificialLocation : public SaveAndRestoreLocation {
> +class ArtificialLocation : public ApplyDebugLocation {
>  public:
> -  ArtificialLocation(CodeGenFunction &CGF, CGBuilderTy &B);
> -
> -  /// Set the current location to line 0, but within the current scope
> -  /// (= the top of the LexicalBlockStack).
> -  void Emit();
> -
> -  /// Autorestore everything back to normal.
> -  ~ArtificialLocation();
> +  ArtificialLocation(CodeGenFunction &CGF);
>  };
>
>
>
> Modified: cfe/trunk/lib/CodeGen/CGDecl.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGDecl.cpp?rev=225000&r1=224999&r2=225000&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGDecl.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGDecl.cpp Tue Dec 30 13:39:33 2014
> @@ -597,14 +597,13 @@ static void drillIntoBlockVariable(CodeG
>  }
>
>  void CodeGenFunction::EmitScalarInit(const Expr *init, const ValueDecl *D,
> -                                     LValue lvalue, bool capturedByInit,
> -                                     SourceLocation DbgLoc) {
> +                                     LValue lvalue, bool capturedByInit) {
>    Qualifiers::ObjCLifetime lifetime = lvalue.getObjCLifetime();
>    if (!lifetime) {
>      llvm::Value *value = EmitScalarExpr(init);
>      if (capturedByInit)
>        drillIntoBlockVariable(*this, lvalue, cast<VarDecl>(D));
> -    EmitStoreThroughLValue(RValue::get(value), lvalue, true, DbgLoc);
> +    EmitStoreThroughLValue(RValue::get(value), lvalue, true);
>      return;
>    }
>
> @@ -1088,6 +1087,7 @@ void CodeGenFunction::EmitAutoVarInit(co
>    if (emission.wasEmittedAsGlobal()) return;
>
>    const VarDecl &D = *emission.Variable;
> +  ApplyDebugLocation DL(*this, D.getLocation());
>    QualType type = D.getType();
>
>    // If this local has an initializer, emit it now.
> @@ -1126,7 +1126,7 @@ void CodeGenFunction::EmitAutoVarInit(co
>    if (!constant) {
>      LValue lv = MakeAddrLValue(Loc, type, alignment);
>      lv.setNonGC(true);
> -    return EmitExprAsInit(Init, &D, lv, capturedByInit, D.getLocation());
> +    return EmitExprAsInit(Init, &D, lv, capturedByInit);
>    }
>
>    if (!emission.IsConstantAggregate) {
> @@ -1192,26 +1192,25 @@ void CodeGenFunction::EmitAutoVarInit(co
>  /// \param capturedByInit true if the variable is a __block variable
>  ///   whose address is potentially changed by the initializer
>  void CodeGenFunction::EmitExprAsInit(const Expr *init, const ValueDecl *D,
> -                                     LValue lvalue, bool capturedByInit,
> -                                     SourceLocation DbgLoc) {
> +                                     LValue lvalue, bool capturedByInit) {
>    QualType type = D->getType();
>
>    if (type->isReferenceType()) {
>      RValue rvalue = EmitReferenceBindingToExpr(init);
>      if (capturedByInit)
>        drillIntoBlockVariable(*this, lvalue, cast<VarDecl>(D));
> -    EmitStoreThroughLValue(rvalue, lvalue, true, DbgLoc);
> +    EmitStoreThroughLValue(rvalue, lvalue, true);
>      return;
>    }
>    switch (getEvaluationKind(type)) {
>    case TEK_Scalar:
> -    EmitScalarInit(init, D, lvalue, capturedByInit, DbgLoc);
> +    EmitScalarInit(init, D, lvalue, capturedByInit);
>      return;
>    case TEK_Complex: {
>      ComplexPairTy complex = EmitComplexExpr(init);
>      if (capturedByInit)
>        drillIntoBlockVariable(*this, lvalue, cast<VarDecl>(D));
> -    EmitStoreOfComplex(complex, lvalue, /*init*/ true, DbgLoc);
> +    EmitStoreOfComplex(complex, lvalue, /*init*/ true);
>      return;
>    }
>    case TEK_Aggregate:
>
> Modified: cfe/trunk/lib/CodeGen/CGDeclCXX.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGDeclCXX.cpp?rev=225000&r1=224999&r2=225000&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGDeclCXX.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGDeclCXX.cpp Tue Dec 30 13:39:33 2014
> @@ -474,11 +474,11 @@ CodeGenFunction::GenerateCXXGlobalInitFu
>                                             ArrayRef<llvm::Function *> Decls,
>                                             llvm::GlobalVariable *Guard) {
>    {
> -    ArtificialLocation AL(*this, Builder);
> +    ApplyDebugLocation NL(*this);
>      StartFunction(GlobalDecl(), getContext().VoidTy, Fn,
>                    getTypes().arrangeNullaryFunction(), FunctionArgList());
>      // Emit an artificial location for this function.
> -    AL.Emit();
> +    ArtificialLocation AL(*this);
>
>      llvm::BasicBlock *ExitBlock = nullptr;
>      if (Guard) {
> @@ -525,11 +525,11 @@ void CodeGenFunction::GenerateCXXGlobalD
>                    const std::vector<std::pair<llvm::WeakVH, llvm::Constant*> >
>                                                  &DtorsAndObjects) {
>    {
> -    ArtificialLocation AL(*this, Builder);
> +    ApplyDebugLocation NL(*this);
>      StartFunction(GlobalDecl(), getContext().VoidTy, Fn,
>                    getTypes().arrangeNullaryFunction(), FunctionArgList());
>      // Emit an artificial location for this function.
> -    AL.Emit();
> +    ArtificialLocation AL(*this);
>
>      // Emit the dtors, in reverse order from construction.
>      for (unsigned i = 0, e = DtorsAndObjects.size(); i != e; ++i) {
>
> Modified: cfe/trunk/lib/CodeGen/CGException.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGException.cpp?rev=225000&r1=224999&r2=225000&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGException.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGException.cpp Tue Dec 30 13:39:33 2014
> @@ -734,9 +734,7 @@ llvm::BasicBlock *CodeGenFunction::EmitL
>
>    // Save the current IR generation state.
>    CGBuilderTy::InsertPoint savedIP = Builder.saveAndClearIP();
> -  SaveAndRestoreLocation AutoRestoreLocation(*this, Builder);
> -  if (CGDebugInfo *DI = getDebugInfo())
> -    DI->EmitLocation(Builder, CurEHLocation);
> +  ApplyDebugLocation AutoRestoreLocation(*this, CurEHLocation);
>
>    const EHPersonality &personality = EHPersonality::get(CGM);
>
>
> Modified: cfe/trunk/lib/CodeGen/CGExpr.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGExpr.cpp?rev=225000&r1=224999&r2=225000&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGExpr.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGExpr.cpp Tue Dec 30 13:39:33 2014
> @@ -1438,11 +1438,7 @@ RValue CodeGenFunction::EmitLoadOfGlobal
>  /// lvalue, where both are guaranteed to the have the same type, and that type
>  /// is 'Ty'.
>  void CodeGenFunction::EmitStoreThroughLValue(RValue Src, LValue Dst,
> -                                             bool isInit,
> -                                             SourceLocation DbgLoc) {
> -  if (auto *DI = getDebugInfo())
> -    DI->EmitLocation(Builder, DbgLoc);
> -
> +                                             bool isInit) {
>    if (!Dst.isSimple()) {
>      if (Dst.isVectorElt()) {
>        // Read/modify/write the vector, inserting the new element.
> @@ -2408,9 +2404,6 @@ LValue CodeGenFunction::EmitArraySubscri
>      // The element count here is the total number of non-VLA elements.
>      llvm::Value *numElements = getVLASize(vla).first;
>
> -    if (auto *DI = getDebugInfo())
> -      DI->EmitLocation(Builder, E->getLocStart());
> -
>      // Effectively, the multiply by the VLA size is part of the GEP.
>      // GEP indexes are signed, and scaling an index isn't permitted to
>      // signed-overflow, so we use the same semantics for our explicit
> @@ -2456,9 +2449,6 @@ LValue CodeGenFunction::EmitArraySubscri
>      // Propagate the alignment from the array itself to the result.
>      ArrayAlignment = ArrayLV.getAlignment();
>
> -    if (auto *DI = getDebugInfo())
> -      DI->EmitLocation(Builder, E->getLocStart());
> -
>      if (getLangOpts().isSignedOverflowDefined())
>        Address = Builder.CreateGEP(ArrayPtr, Args, "arrayidx");
>      else
> @@ -2466,8 +2456,6 @@ LValue CodeGenFunction::EmitArraySubscri
>    } else {
>      // The base must be a pointer, which is not an aggregate.  Emit it.
>      llvm::Value *Base = EmitScalarExpr(E->getBase());
> -    if (auto *DI = getDebugInfo())
> -      DI->EmitLocation(Builder, E->getLocStart());
>      if (getLangOpts().isSignedOverflowDefined())
>        Address = Builder.CreateGEP(Base, Idx, "arrayidx");
>      else
> @@ -3024,18 +3012,15 @@ RValue CodeGenFunction::EmitRValueForFie
>
>  RValue CodeGenFunction::EmitCallExpr(const CallExpr *E,
>                                       ReturnValueSlot ReturnValue) {
> -  if (CGDebugInfo *DI = getDebugInfo()) {
> -    SourceLocation Loc = E->getLocStart();
> -    // Force column info to be generated so we can differentiate
> -    // multiple call sites on the same line in the debug info.
> -    // FIXME: This is insufficient. Two calls coming from the same macro
> -    // expansion will still get the same line/column and break debug info. It's
> -    // possible that LLVM can be fixed to not rely on this uniqueness, at which
> -    // point this workaround can be removed.
> -    const FunctionDecl* Callee = E->getDirectCallee();
> -    bool ForceColumnInfo = Callee && Callee->isInlineSpecified();
> -    DI->EmitLocation(Builder, Loc, ForceColumnInfo);
> -  }
> +  // Force column info to be generated so we can differentiate
> +  // multiple call sites on the same line in the debug info.
> +  // FIXME: This is insufficient. Two calls coming from the same macro
> +  // expansion will still get the same line/column and break debug info. It's
> +  // possible that LLVM can be fixed to not rely on this uniqueness, at which
> +  // point this workaround can be removed.
> +  ApplyDebugLocation DL(*this, E->getLocStart(),
> +                        E->getDirectCallee() &&
> +                            E->getDirectCallee()->isInlineSpecified());
>
>    // Builtins never have block type.
>    if (E->getCallee()->getType()->isBlockPointerType())
> @@ -3151,8 +3136,6 @@ LValue CodeGenFunction::EmitBinaryOperat
>
>      RValue RV = EmitAnyExpr(E->getRHS());
>      LValue LV = EmitCheckedLValue(E->getLHS(), TCK_Store);
> -    if (CGDebugInfo *DI = getDebugInfo())
> -      DI->EmitLocation(Builder, E->getLocStart());
>      EmitStoreThroughLValue(RV, LV);
>      return LV;
>    }
>
> Modified: cfe/trunk/lib/CodeGen/CGExprCXX.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGExprCXX.cpp?rev=225000&r1=224999&r2=225000&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGExprCXX.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGExprCXX.cpp Tue Dec 30 13:39:33 2014
> @@ -187,8 +187,6 @@ RValue CodeGenFunction::EmitCXXMemberOrO
>          unsigned ArgsToSkip = isa<CXXOperatorCallExpr>(CE) ? 1 : 0;
>          llvm::Value *RHS =
>              EmitLValue(*(CE->arg_begin() + ArgsToSkip)).getAddress();
> -        if (auto *DI = getDebugInfo())
> -          DI->EmitLocation(Builder, CE->getLocStart());
>          EmitAggregateAssign(This, RHS, CE->getType());
>          return RValue::get(This);
>        }
> @@ -754,15 +752,13 @@ static llvm::Value *EmitCXXNewAllocSize(
>  }
>
>  static void StoreAnyExprIntoOneUnit(CodeGenFunction &CGF, const Expr *Init,
> -                                    QualType AllocType, llvm::Value *NewPtr,
> -                                    SourceLocation DbgLoc = SourceLocation()) {
> +                                    QualType AllocType, llvm::Value *NewPtr) {
>    // FIXME: Refactor with EmitExprAsInit.
>    CharUnits Alignment = CGF.getContext().getTypeAlignInChars(AllocType);
>    switch (CGF.getEvaluationKind(AllocType)) {
>    case TEK_Scalar:
>      CGF.EmitScalarInit(Init, nullptr,
> -                       CGF.MakeAddrLValue(NewPtr, AllocType, Alignment), false,
> -                       DbgLoc);
> +                       CGF.MakeAddrLValue(NewPtr, AllocType, Alignment), false);
>      return;
>    case TEK_Complex:
>      CGF.EmitComplexExprIntoLValue(Init, CGF.MakeAddrLValue(NewPtr, AllocType,
> @@ -1020,12 +1016,12 @@ static void EmitNewInitializer(CodeGenFu
>                                 llvm::Value *NewPtr,
>                                 llvm::Value *NumElements,
>                                 llvm::Value *AllocSizeWithoutCookie) {
> +  ApplyDebugLocation DL(CGF, E->getStartLoc());
>    if (E->isArray())
>      CGF.EmitNewArrayInitializer(E, ElementType, NewPtr, NumElements,
>                                  AllocSizeWithoutCookie);
>    else if (const Expr *Init = E->getInitializer())
> -    StoreAnyExprIntoOneUnit(CGF, Init, E->getAllocatedType(), NewPtr,
> -                            E->getStartLoc());
> +    StoreAnyExprIntoOneUnit(CGF, Init, E->getAllocatedType(), NewPtr);
>  }
>
>  /// Emit a call to an operator new or operator delete function, as implicitly
> @@ -1269,9 +1265,6 @@ llvm::Value *CodeGenFunction::EmitCXXNew
>                 E->placement_arg_end(), /* CalleeDecl */ nullptr,
>                 /*ParamsToSkip*/ 1);
>
> -  if (auto *DI = getDebugInfo())
> -    DI->EmitLocation(Builder, E->getLocStart());
> -
>    // Emit the allocation call.  If the allocator is a global placement
>    // operator, just "inline" it directly.
>    RValue RV;
>
> Modified: cfe/trunk/lib/CodeGen/CGExprComplex.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGExprComplex.cpp?rev=225000&r1=224999&r2=225000&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGExprComplex.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGExprComplex.cpp Tue Dec 30 13:39:33 2014
> @@ -81,8 +81,7 @@ public:
>
>    /// EmitStoreOfComplex - Store the specified real/imag parts into the
>    /// specified value pointer.
> -  void EmitStoreOfComplex(ComplexPairTy Val, LValue LV, bool isInit,
> -                          SourceLocation DbgLoc);
> +  void EmitStoreOfComplex(ComplexPairTy Val, LValue LV, bool isInit);
>
>    /// EmitComplexToComplexCast - Emit a cast from complex value Val to DestType.
>    ComplexPairTy EmitComplexToComplexCast(ComplexPairTy Val, QualType SrcType,
> @@ -335,11 +334,7 @@ ComplexPairTy ComplexExprEmitter::EmitLo
>  /// EmitStoreOfComplex - Store the specified real/imag parts into the
>  /// specified value pointer.
>  void ComplexExprEmitter::EmitStoreOfComplex(ComplexPairTy Val, LValue lvalue,
> -                                            bool isInit,
> -                                            SourceLocation DbgLoc) {
> -  if (auto *DI = CGF.getDebugInfo())
> -    DI->EmitLocation(CGF.Builder, DbgLoc);
> -
> +                                            bool isInit) {
>    if (lvalue.getType()->isAtomicType())
>      return CGF.EmitAtomicStore(RValue::getComplex(Val), lvalue, isInit);
>
> @@ -869,7 +864,7 @@ EmitCompoundAssignLValue(const CompoundA
>    // Truncate the result and store it into the LHS lvalue.
>    if (LHSTy->isAnyComplexType()) {
>      ComplexPairTy ResVal = EmitComplexToComplexCast(Result, OpInfo.Ty, LHSTy);
> -    EmitStoreOfComplex(ResVal, LHS, /*isInit*/ false, E->getLocStart());
> +    EmitStoreOfComplex(ResVal, LHS, /*isInit*/ false);
>      Val = RValue::getComplex(ResVal);
>    } else {
>      llvm::Value *ResVal =
> @@ -914,7 +909,7 @@ LValue ComplexExprEmitter::EmitBinAssign
>    LValue LHS = CGF.EmitLValue(E->getLHS());
>
>    // Store the result value into the LHS lvalue.
> -  EmitStoreOfComplex(Val, LHS, /*isInit*/ false, E->getLocStart());
> +  EmitStoreOfComplex(Val, LHS, /*isInit*/ false);
>
>    return LHS;
>  }
> @@ -1042,19 +1037,18 @@ ComplexPairTy CodeGenFunction::EmitCompl
>  }
>
>  void CodeGenFunction::EmitComplexExprIntoLValue(const Expr *E, LValue dest,
> -                                                bool isInit,
> -                                                SourceLocation DbgLoc) {
> +                                                bool isInit) {
>    assert(E && getComplexType(E->getType()) &&
>           "Invalid complex expression to emit");
>    ComplexExprEmitter Emitter(*this);
>    ComplexPairTy Val = Emitter.Visit(const_cast<Expr*>(E));
> -  Emitter.EmitStoreOfComplex(Val, dest, isInit, DbgLoc);
> +  Emitter.EmitStoreOfComplex(Val, dest, isInit);
>  }
>
>  /// EmitStoreOfComplex - Store a complex number into the specified l-value.
>  void CodeGenFunction::EmitStoreOfComplex(ComplexPairTy V, LValue dest,
> -                                         bool isInit, SourceLocation DbgLoc) {
> -  ComplexExprEmitter(*this).EmitStoreOfComplex(V, dest, isInit, DbgLoc);
> +                                         bool isInit) {
> +  ComplexExprEmitter(*this).EmitStoreOfComplex(V, dest, isInit);
>  }
>
>  /// EmitLoadOfComplex - Load a complex number from the specified address.
>
> Modified: cfe/trunk/lib/CodeGen/CGExprScalar.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGExprScalar.cpp?rev=225000&r1=224999&r2=225000&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGExprScalar.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGExprScalar.cpp Tue Dec 30 13:39:33 2014
> @@ -196,6 +196,7 @@ public:
>    //===--------------------------------------------------------------------===//
>
>    Value *Visit(Expr *E) {
> +    ApplyDebugLocation DL(CGF, E->getLocStart());
>      return StmtVisitor<ScalarExprEmitter, Value*>::Visit(E);
>    }
>
> @@ -3042,7 +3043,7 @@ Value *ScalarExprEmitter::VisitBinLAnd(c
>    // Emit an unconditional branch from this block to ContBlock.
>    {
>      // There is no need to emit line number for unconditional branch.
> -    SuppressDebugLocation S(Builder);
> +    ApplyDebugLocation DL(CGF);
>      CGF.EmitBlock(ContBlock);
>    }
>    // Insert an entry into the phi node for the edge with the value of RHSCond.
>
> Modified: cfe/trunk/lib/CodeGen/CGStmt.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGStmt.cpp?rev=225000&r1=224999&r2=225000&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGStmt.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGStmt.cpp Tue Dec 30 13:39:33 2014
> @@ -565,7 +565,7 @@ void CodeGenFunction::EmitIfStmt(const I
>    if (const Stmt *Else = S.getElse()) {
>      {
>        // There is no need to emit line number for unconditional branch.
> -      SuppressDebugLocation S(Builder);
> +      ApplyDebugLocation DL(*this);
>        EmitBlock(ElseBlock);
>      }
>      {
> @@ -574,7 +574,7 @@ void CodeGenFunction::EmitIfStmt(const I
>      }
>      {
>        // There is no need to emit line number for unconditional branch.
> -      SuppressDebugLocation S(Builder);
> +      ApplyDebugLocation DL(*this);
>        EmitBranch(ContBlock);
>      }
>    }
>
> Modified: cfe/trunk/lib/CodeGen/CGStmtOpenMP.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGStmtOpenMP.cpp?rev=225000&r1=224999&r2=225000&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGStmtOpenMP.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGStmtOpenMP.cpp Tue Dec 30 13:39:33 2014
> @@ -86,13 +86,13 @@ static void EmitOMPIfClause(CodeGenFunct
>    // Emit the 'else' code if present.
>    {
>      // There is no need to emit line number for unconditional branch.
> -    SuppressDebugLocation SDL(CGF.Builder);
> +    ApplyDebugLocation DL(CGF);
>      CGF.EmitBlock(ElseBlock);
>    }
>    CodeGen(/*ThenBlock*/ false);
>    {
>      // There is no need to emit line number for unconditional branch.
> -    SuppressDebugLocation SDL(CGF.Builder);
> +    ApplyDebugLocation DL(CGF);
>      CGF.EmitBranch(ContBlock);
>    }
>    // Emit the continuation block for code after the if.
>
> Modified: cfe/trunk/lib/CodeGen/CodeGenFunction.h
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CodeGenFunction.h?rev=225000&r1=224999&r2=225000&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CodeGenFunction.h (original)
> +++ cfe/trunk/lib/CodeGen/CodeGenFunction.h Tue Dec 30 13:39:33 2014
> @@ -93,19 +93,6 @@ enum TypeEvaluationKind {
>    TEK_Aggregate
>  };
>
> -class SuppressDebugLocation {
> -  llvm::DebugLoc CurLoc;
> -  llvm::IRBuilderBase &Builder;
> -public:
> -  SuppressDebugLocation(llvm::IRBuilderBase &Builder)
> -      : CurLoc(Builder.getCurrentDebugLocation()), Builder(Builder) {
> -    Builder.SetCurrentDebugLocation(llvm::DebugLoc());
> -  }
> -  ~SuppressDebugLocation() {
> -    Builder.SetCurrentDebugLocation(CurLoc);
> -  }
> -};
> -
>  /// CodeGenFunction - This class organizes the per-function state that is used
>  /// while generating LLVM code.
>  class CodeGenFunction : public CodeGenTypeCache {
> @@ -1300,8 +1287,7 @@ public:
>                          FunctionArgList &Args);
>
>    void EmitInitializerForField(FieldDecl *Field, LValue LHS, Expr *Init,
> -                               ArrayRef<VarDecl *> ArrayIndexes,
> -                               SourceLocation DbgLoc = SourceLocation());
> +                               ArrayRef<VarDecl *> ArrayIndexes);
>
>    /// InitializeVTablePointer - Initialize the vtable pointer of the given
>    /// subobject.
> @@ -1546,7 +1532,7 @@ public:
>    /// EmitExprAsInit - Emits the code necessary to initialize a
>    /// location in memory with the given initializer.
>    void EmitExprAsInit(const Expr *init, const ValueDecl *D, LValue lvalue,
> -                      bool capturedByInit, SourceLocation DbgLoc);
> +                      bool capturedByInit);
>
>    /// hasVolatileMember - returns true if aggregate type has a volatile
>    /// member.
> @@ -1833,8 +1819,7 @@ public:
>    void EmitVarDecl(const VarDecl &D);
>
>    void EmitScalarInit(const Expr *init, const ValueDecl *D, LValue lvalue,
> -                      bool capturedByInit,
> -                      SourceLocation DbgLoc = SourceLocation());
> +                      bool capturedByInit);
>    void EmitScalarInit(llvm::Value *init, LValue lvalue);
>
>    typedef void SpecialInitFn(CodeGenFunction &Init, const VarDecl &D,
> @@ -2164,8 +2149,7 @@ public:
>    /// EmitStoreThroughLValue - Store the specified rvalue into the specified
>    /// lvalue, where both are guaranteed to the have the same type, and that type
>    /// is 'Ty'.
> -  void EmitStoreThroughLValue(RValue Src, LValue Dst, bool isInit = false,
> -                              SourceLocation DbgLoc = SourceLocation());
> +  void EmitStoreThroughLValue(RValue Src, LValue Dst, bool isInit = false);
>    void EmitStoreThroughExtVectorComponentLValue(RValue Src, LValue Dst);
>    void EmitStoreThroughGlobalRegLValue(RValue Src, LValue Dst);
>
> @@ -2537,12 +2521,10 @@ public:
>
>    /// EmitComplexExprIntoLValue - Emit the given expression of complex
>    /// type and place its result into the specified l-value.
> -  void EmitComplexExprIntoLValue(const Expr *E, LValue dest, bool isInit,
> -                                 SourceLocation DbgLoc = SourceLocation());
> +  void EmitComplexExprIntoLValue(const Expr *E, LValue dest, bool isInit);
>
>    /// EmitStoreOfComplex - Store a complex number into the specified l-value.
> -  void EmitStoreOfComplex(ComplexPairTy V, LValue dest, bool isInit,
> -                          SourceLocation DbgLoc = SourceLocation());
> +  void EmitStoreOfComplex(ComplexPairTy V, LValue dest, bool isInit);
>
>    /// EmitLoadOfComplex - Load a complex number from the specified l-value.
>    ComplexPairTy EmitLoadOfComplex(LValue src, SourceLocation loc);
>
> Modified: cfe/trunk/test/CodeGenCXX/PR20038.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/PR20038.cpp?rev=225000&r1=224999&r2=225000&view=diff
> ==============================================================================
> --- cfe/trunk/test/CodeGenCXX/PR20038.cpp (original)
> +++ cfe/trunk/test/CodeGenCXX/PR20038.cpp Tue Dec 30 13:39:33 2014
> @@ -1,4 +1,4 @@
> -// RUN: %clang_cc1 -triple %itanium_abi_triple -g -emit-llvm  %s -o - | FileCheck %s
> +// RUN: %clang_cc1 -triple %itanium_abi_triple -g -mllvm -no-discriminators -emit-llvm  %s -o - | FileCheck %s
>
>  struct C {
>    ~C();
> @@ -8,9 +8,7 @@ extern bool b;
>  // CHECK: call {{.*}}, !dbg [[DTOR_CALL2_LOC:![0-9]*]]
>  // CHECK: [[FUN1:.*]] = {{.*}}; [ DW_TAG_subprogram ] {{.*}} [def] [fun1]
>  // CHECK: [[FUN2:.*]] = {{.*}}; [ DW_TAG_subprogram ] {{.*}} [def] [fun2]
> -// CHECK: [[DTOR_CALL1_LOC]] = !{i32 [[@LINE+2]], i32 0, [[FUN1_BLOCK:.*]], null}
> -// CHECK: [[FUN1_BLOCK]] = !{!"0xb{{[^,]*}}", {{[^,]*}}, [[FUN1]]}
> +// CHECK: [[DTOR_CALL1_LOC]] = !{i32 [[@LINE+1]], i32 0, [[FUN1]], null}
>  void fun1() { b && (C(), 1); }
> -// CHECK: [[DTOR_CALL2_LOC]] = !{i32 [[@LINE+2]], i32 0, [[FUN2_BLOCK1:.*]], null}
> -// CHECK: [[FUN2_BLOCK1]] = !{!"0xb{{[^,]*}}", {{[^,]*}}, [[FUN2]]}
> +// CHECK: [[DTOR_CALL2_LOC]] = !{i32 [[@LINE+1]], i32 0, [[FUN2]], null}
>  bool fun2() { return (C(), b) && 0; }
>
> Modified: cfe/trunk/test/CodeGenCXX/debug-info-line.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/debug-info-line.cpp?rev=225000&r1=224999&r2=225000&view=diff
> ==============================================================================
> --- cfe/trunk/test/CodeGenCXX/debug-info-line.cpp (original)
> +++ cfe/trunk/test/CodeGenCXX/debug-info-line.cpp Tue Dec 30 13:39:33 2014
> @@ -1,4 +1,5 @@
>  // RUN: %clang_cc1 -g -std=c++11 -S -emit-llvm %s -o - | FileCheck %s
> +// RUN: %clang_cc1 -triple i686-linux-gnu -g -std=c++11 -S -emit-llvm %s -o - | FileCheck %s
>
>  int &src();
>  int *sink();
> @@ -110,6 +111,23 @@ void f10() {
>        new (void_src()) int(src()));
>  }
>
> +// CHECK-LABEL: define
> +__complex double f11() {
> +  __complex double f;
> +// CHECK: store {{.*}} !dbg [[DBG_F11:!.*]]
> +#line 1200
> +  return f;
> +}
> +
> +// CHECK-LABEL: define
> +void f12() {
> +  int f12_1();
> +  void f12_2(int = f12_1());
> +// CHECK: call i32 {{.*}} !dbg [[DBG_F12:!.*]]
> +#line 1300
> +  f12_2();
> +}
> +
>  // CHECK: [[DBG_F1]] = !{i32 100,
>  // CHECK: [[DBG_FOO_VALUE]] = !{i32 200,
>  // CHECK: [[DBG_FOO_REF]] = !{i32 202,
> @@ -124,3 +142,5 @@ void f10() {
>  // CHECK: [[DBG_F9]] = !{i32 1000,
>  // CHECK: [[DBG_F10_ICMP]] = !{i32 1100,
>  // CHECK: [[DBG_F10_STORE]] = !{i32 1100,
> +// CHECK: [[DBG_F11]] = !{i32 1200,
> +// CHECK: [[DBG_F12]] = !{i32 1300,
>
> Modified: cfe/trunk/test/CodeGenCXX/debug-info-scope.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/debug-info-scope.cpp?rev=225000&r1=224999&r2=225000&view=diff
> ==============================================================================
> --- cfe/trunk/test/CodeGenCXX/debug-info-scope.cpp (original)
> +++ cfe/trunk/test/CodeGenCXX/debug-info-scope.cpp Tue Dec 30 13:39:33 2014
> @@ -36,12 +36,12 @@ void func() {
>    // CHECK: = !{!"0x100\00{{.*}}", [[FOR:![0-9]*]], {{.*}} ; [ DW_TAG_auto_variable ] [i] [line [[@LINE+2]]]
>    // CHECK: [[FOR]] = !{!"0xb\00[[@LINE+1]]\00{{.*}}", !{{.*}}} ; [ DW_TAG_lexical_block ]
>    for (int i = 0; i != 10; ++i) {
> -  // FIXME: Do not include scopes that have only other scopes (and no variables
> -  // or using declarations) as direct children, they just waste
> -  // space/relocations/etc.
> -  // CHECK: = !{!"0x100\00{{.*}}", [[FOR_COMPOUND:![0-9]*]], {{.*}} ; [ DW_TAG_auto_variable ] [b] [line [[@LINE+3]]]
> -  // CHECK: [[FOR_COMPOUND]] = !{!"0xb\00[[@LINE-5]]\00{{.*}}", !{{[0-9]+}}, [[FOR_BODY:![0-9]+]]} ; [ DW_TAG_lexical_block ]
> -  // CHECK: [[FOR_BODY]] = !{!"0xb\00[[@LINE-6]]\00{{.*}}", !{{[0-9]+}}, [[FOR]]} ; [ DW_TAG_lexical_block ]
> +    // FIXME: Do not include scopes that have only other scopes (and no variables
> +    // or using declarations) as direct children, they just waste
> +    // space/relocations/etc.
> +    // CHECK: [[FOR_LOOP_INCLUDING_COND:!.*]] = !{!"0xb\00[[@LINE-4]]\00{{.*}}", !{{[0-9]+}}, [[FOR]]} ; [ DW_TAG_lexical_block ]
> +    // CHECK: = !{!"0x100\00{{.*}}", [[FOR_COMPOUND:![0-9]*]], {{.*}} ; [ DW_TAG_auto_variable ] [b] [line [[@LINE+2]]]
> +    // CHECK: [[FOR_COMPOUND]] = !{!"0xb\00[[@LINE-6]]\00{{.*}}", !{{[0-9]+}}, [[FOR_LOOP_INCLUDING_COND]]} ; [ DW_TAG_lexical_block ]
>      bool b = i % 2;
>    }
>
>
>
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