Promote atomic type sizes up to a power of two, capped by

MaxAtomicPromoteWidth.  Fix a ton of terrible bugs with
_Atomic types and (non-intrinsic-mediated) loads and stores
thereto.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176658 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 2 deletions

diff --git a/lib/CodeGen/CGDecl.cpp b/lib/CodeGen/CGDecl.cpp
index bb5d6389d2..0e001301ae 100644
--- a/lib/CodeGen/CGDecl.cpp
+++ b/lib/CodeGen/CGDecl.cpp
@@ -1129,11 +1129,15 @@ void CodeGenFunction::EmitExprAsInit(const Expr *init,
     return;
   }
   case TEK_Aggregate:
-    // TODO: how can we delay here if D is captured by its initializer?
-    EmitAggExpr(init, AggValueSlot::forLValue(lvalue,
+    if (type->isAtomicType()) {
+      EmitAtomicInit(const_cast<Expr*>(init), lvalue);
+    } else {
+      // TODO: how can we delay here if D is captured by its initializer?
+      EmitAggExpr(init, AggValueSlot::forLValue(lvalue,
                                               AggValueSlot::IsDestructed,
                                          AggValueSlot::DoesNotNeedGCBarriers,
                                               AggValueSlot::IsNotAliased));
+    }
     MaybeEmitStdInitializerListCleanup(lvalue.getAddress(), init);
     return;
   }