From: David Blaikie <dblaikie@gmail.com>
Date: Mon, 9 Feb 2015 18:47:14 +0000 (+0000)
Subject: DebugInfo: Suppress the location of instructions in aggregate default arguments.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=40a73dbd40a7a7813c7bbd0ada5b9561418c800b;p=clang

DebugInfo: Suppress the location of instructions in aggregate default arguments.

Matches the existing code for scalar default arguments. Complex default
arguments probably need the same handling too (test/fix to that coming
next).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@228588 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/CGExprAgg.cpp b/lib/CodeGen/CGExprAgg.cpp
index 80b16dd5ba..7d05d48e85 100644
--- a/lib/CodeGen/CGExprAgg.cpp
+++ b/lib/CodeGen/CGExprAgg.cpp
@@ -1387,7 +1387,12 @@ 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/test/CodeGenCXX/debug-info-line.cpp b/test/CodeGenCXX/debug-info-line.cpp
index f6ce53e2e3..4a06145f50 100644
--- a/test/CodeGenCXX/debug-info-line.cpp
+++ b/test/CodeGenCXX/debug-info-line.cpp
@@ -274,6 +274,17 @@ void f22() {
   }
 }
 
+// CHECK-LABEL: define
+struct f23_struct {
+};
+f23_struct f23_a();
+void f23_b(f23_struct = f23_a());
+void f23() {
+// CHECK: call {{.*}}f23_a{{.*}}, !dbg [[DBG_F23:![0-9]*]]
+#line 2500
+  f23_b();
+}
+
 // CHECK: [[DBG_F1]] = !MDLocation(line: 100,
 // CHECK: [[DBG_FOO_VALUE]] = !MDLocation(line: 200,
 // CHECK: [[DBG_FOO_REF]] = !MDLocation(line: 202,
@@ -302,3 +313,4 @@ void f22() {
 // CHECK: [[DBG_F19_1]] = !MDLocation(line: 2100,
 // CHECK: [[DBG_F19_2]] = !MDLocation(line: 2101,
 // CHECK: [[DBG_F20_1]] = !MDLocation(line: 2200,
+// CHECK: [[DBG_F23]] = !MDLocation(line: 2500,