Support for C1x _Atomic specifier (see testcase). This is primarily being committed at the moment to help support C++0x <atomic>, but it should be a solid base for implementing the full specification of C1x _Atomic.

Thanks to Jeffrey Yasskin for the thorough review!



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141330 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/CodeGen/CodeGenFunction.cpp b/lib/CodeGen/CodeGenFunction.cpp
index 12def6728f..2c6e7b0acd 100644
--- a/lib/CodeGen/CodeGenFunction.cpp
+++ b/lib/CodeGen/CodeGenFunction.cpp
@@ -87,6 +87,10 @@ bool CodeGenFunction::hasAggregateLLVMType(QualType type) {
   case Type::ObjCObject:
   case Type::ObjCInterface:
     return true;
+
+  // In IRGen, atomic types are just the underlying type
+  case Type::Atomic:
+    return hasAggregateLLVMType(type->getAs<AtomicType>()->getValueType());
   }
   llvm_unreachable("unknown type kind!");
 }
@@ -983,6 +987,10 @@ void CodeGenFunction::EmitVariablyModifiedType(QualType type) {
     case Type::FunctionNoProto:
       type = cast<FunctionType>(ty)->getResultType();
       break;
+
+    case Type::Atomic:
+      type = cast<AtomicType>(ty)->getValueType();
+      break;
     }
   } while (type->isVariablyModifiedType());
 }