r285625 - DebugInfo: support for DW_TAG_atomic_type

[Victor Leschuk via cfe-commits]

Author: vleschuk
Date: Mon Oct 31 14:09:47 2016
New Revision: 285625

URL: http://llvm.org/viewvc/llvm-project?rev=285625&view=rev
Log:
DebugInfo: support for DW_TAG_atomic_type

Mark C11 _Atomic variables with DW_TAG_atomic_type tag.

Differential Revision: https://reviews.llvm.org/D26145

Added:
    cfe/trunk/test/CodeGen/debug-info-atomic.c
Modified:
    cfe/trunk/lib/CodeGen/CGDebugInfo.cpp

Modified: cfe/trunk/lib/CodeGen/CGDebugInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGDebugInfo.cpp?rev=285625&r1=285624&r2=285625&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CGDebugInfo.cpp (original)
+++ cfe/trunk/lib/CodeGen/CGDebugInfo.cpp Mon Oct 31 14:09:47 2016
@@ -2287,9 +2287,8 @@ llvm::DIType *CGDebugInfo::CreateType(co
 }
 
 llvm::DIType *CGDebugInfo::CreateType(const AtomicType *Ty, llvm::DIFile *U) {
-  // Ignore the atomic wrapping
-  // FIXME: What is the correct representation?
-  return getOrCreateType(Ty->getValueType(), U);
+  auto *FromTy = getOrCreateType(Ty->getValueType(), U);
+  return DBuilder.createQualifiedType(llvm::dwarf::DW_TAG_atomic_type, FromTy);
 }
 
 llvm::DIType* CGDebugInfo::CreateType(const PipeType *Ty,

Added: cfe/trunk/test/CodeGen/debug-info-atomic.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/debug-info-atomic.c?rev=285625&view=auto
==============================================================================
--- cfe/trunk/test/CodeGen/debug-info-atomic.c (added)
+++ cfe/trunk/test/CodeGen/debug-info-atomic.c Mon Oct 31 14:09:47 2016
@@ -0,0 +1,7 @@
+// RUN: %clang -g -c -std=c11 -S -emit-llvm -o - %s | FileCheck %s
+
+// CHECK: !DIGlobalVariable(name: "i"{{.*}}type: !5, isLocal: false, isDefinition: true)
+// CHECK: !5 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !6)
+// CHECK: !6 = !DIDerivedType(tag: DW_TAG_atomic_type, baseType: !7)
+// CHECK: !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+_Atomic const int i;