Patch to issue error when target of MacOS and iOS
does not support large load/store of atomic objects.
// rdar://13973577
llvm-svn: 182781
diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
index cdc546c..da24667 100644
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -908,10 +908,18 @@
SubExprs.push_back(TheCall->getArg(3)); // Weak
break;
}
+
+ AtomicExpr *AE = new (Context) AtomicExpr(TheCall->getCallee()->getLocStart(),
+ SubExprs, ResultType, Op,
+ TheCall->getRParenLoc());
+
+ if ((Op == AtomicExpr::AO__c11_atomic_load ||
+ (Op == AtomicExpr::AO__c11_atomic_store)) &&
+ Context.AtomicUsesUnsupportedLibcall(AE))
+ Diag(AE->getLocStart(), diag::err_atomic_load_store_uses_lib) <<
+ ((Op == AtomicExpr::AO__c11_atomic_load) ? 0 : 1);
- return Owned(new (Context) AtomicExpr(TheCall->getCallee()->getLocStart(),
- SubExprs, ResultType, Op,
- TheCall->getRParenLoc()));
+ return Owned(AE);
}