implement __sync_synchronize and __sync_lock_release,
rdar://6880573
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71637 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGBuiltin.cpp b/lib/CodeGen/CGBuiltin.cpp
index bddbf4c..93901fd 100644
--- a/lib/CodeGen/CGBuiltin.cpp
+++ b/lib/CodeGen/CGBuiltin.cpp
@@ -470,11 +470,23 @@
case Builtin::BI__sync_lock_release_2:
case Builtin::BI__sync_lock_release_4:
case Builtin::BI__sync_lock_release_8:
- case Builtin::BI__sync_lock_release_16:
- assert(0 && "FIXME: Implement");
+ case Builtin::BI__sync_lock_release_16: {
+ Value *Ptr = EmitScalarExpr(E->getArg(0));
+ const llvm::Type *ElTy =
+ cast<llvm::PointerType>(Ptr->getType())->getElementType();
+ Builder.CreateStore(llvm::Constant::getNullValue(ElTy), Ptr, true);
+ return RValue();
+ }
+ case Builtin::BI__sync_synchronize: {
+ Value *C[5];
+ C[0] = C[1] = C[2] = C[3] = llvm::ConstantInt::get(llvm::Type::Int1Ty, 1);
+ C[4] = ConstantInt::get(llvm::Type::Int1Ty, 0);
+ Builder.CreateCall(CGM.getIntrinsic(Intrinsic::memory_barrier), C, C + 5);
+ return RValue();
+ }
+
// Library functions with special handling.
-
case Builtin::BIsqrt:
case Builtin::BIsqrtf:
case Builtin::BIsqrtl: {