DebugInfo: Refactor default arg handling into a common place (instead of handling in repeatedly for aggregate, complex, and scalar types)

llvm-svn: 228591

4 files changed, 18 insertions, 21 deletions

diff --git a/clang/lib/CodeGen/CGCall.cpp b/clang/lib/CodeGen/CGCall.cpp
index 3c296ae4681..95fad1a1143 100644
--- a/clang/lib/CodeGen/CGCall.cpp
+++ b/clang/lib/CodeGen/CGCall.cpp
@@ -2734,8 +2734,22 @@ struct DestroyUnpassedArg : EHScopeStack::Cleanup {
 
 }
 
+struct DisableDebugLocationUpdates {
+  CodeGenFunction &CGF;
+  bool disabledDebugInfo;
+  DisableDebugLocationUpdates(CodeGenFunction &CGF, const Expr *E) : CGF(CGF) {
+    if ((disabledDebugInfo = isa<CXXDefaultArgExpr>(E) && CGF.getDebugInfo()))
+      CGF.disableDebugInfo();
+  }
+  ~DisableDebugLocationUpdates() {
+    if (disabledDebugInfo)
+      CGF.enableDebugInfo();
+  }
+};
+
 void CodeGenFunction::EmitCallArg(CallArgList &args, const Expr *E,
                                   QualType type) {
+  DisableDebugLocationUpdates Dis(*this, E);
   if (const ObjCIndirectCopyRestoreExpr *CRE
         = dyn_cast<ObjCIndirectCopyRestoreExpr>(E)) {
     assert(getLangOpts().ObjCAutoRefCount);
diff --git a/clang/lib/CodeGen/CGExprAgg.cpp b/clang/lib/CodeGen/CGExprAgg.cpp
index 7d05d48e85d..80b16dd5ba3 100644
--- a/clang/lib/CodeGen/CGExprAgg.cpp
+++ b/clang/lib/CodeGen/CGExprAgg.cpp
@@ -1387,12 +1387,7 @@ void CodeGenFunction::EmitAggExpr(const Expr *E, AggValueSlot Slot) {
   // Optimize the slot if possible.
   CheckAggExprForMemSetUse(Slot, E, *this);
  
-  bool hasDebugInfo = getDebugInfo();
-  if (isa<CXXDefaultArgExpr>(E))
-    disableDebugInfo();
   AggExprEmitter(*this, Slot).Visit(const_cast<Expr*>(E));
-  if (isa<CXXDefaultArgExpr>(E) && hasDebugInfo)
-    enableDebugInfo();
 }
 
 LValue CodeGenFunction::EmitAggExprToLValue(const Expr *E) {
diff --git a/clang/lib/CodeGen/CGExprComplex.cpp b/clang/lib/CodeGen/CGExprComplex.cpp
index b4c652c3d8b..3a39b337b3e 100644
--- a/clang/lib/CodeGen/CGExprComplex.cpp
+++ b/clang/lib/CodeGen/CGExprComplex.cpp
@@ -1033,14 +1033,8 @@ ComplexPairTy CodeGenFunction::EmitComplexExpr(const Expr *E, bool IgnoreReal,
   assert(E && getComplexType(E->getType()) &&
          "Invalid complex expression to emit");
 
-  bool hasDebugInfo = getDebugInfo();
-  if (isa<CXXDefaultArgExpr>(E))
-    disableDebugInfo();
-  auto R = ComplexExprEmitter(*this, IgnoreReal, IgnoreImag)
-                .Visit(const_cast<Expr *>(E));
-  if (isa<CXXDefaultArgExpr>(E) && hasDebugInfo)
-    enableDebugInfo();
-  return R;
+  return ComplexExprEmitter(*this, IgnoreReal, IgnoreImag)
+      .Visit(const_cast<Expr *>(E));
 }
 
 void CodeGenFunction::EmitComplexExprIntoLValue(const Expr *E, LValue dest,
diff --git a/clang/lib/CodeGen/CGExprScalar.cpp b/clang/lib/CodeGen/CGExprScalar.cpp
index 951895f5f04..3e7cd4011de 100644
--- a/clang/lib/CodeGen/CGExprScalar.cpp
+++ b/clang/lib/CodeGen/CGExprScalar.cpp
@@ -3393,14 +3393,8 @@ Value *CodeGenFunction::EmitScalarExpr(const Expr *E, bool IgnoreResultAssign) {
   assert(E && hasScalarEvaluationKind(E->getType()) &&
          "Invalid scalar expression to emit");
 
-  bool hasDebugInfo = getDebugInfo();
-  if (isa<CXXDefaultArgExpr>(E))
-    disableDebugInfo();
-  Value *V = ScalarExprEmitter(*this, IgnoreResultAssign)
-    .Visit(const_cast<Expr*>(E));
-  if (isa<CXXDefaultArgExpr>(E) && hasDebugInfo)
-    enableDebugInfo();
-  return V;
+  return ScalarExprEmitter(*this, IgnoreResultAssign)
+      .Visit(const_cast<Expr *>(E));
 }
 
 /// EmitScalarConversion - Emit a conversion from the specified type to the