[optimizing] Add memory barriers in constructors when needed
If a class has final fields we must add a memory barrier before
returning from constructor. This makes sure the fields are visible to
other threads.
Bug: 19851497
Change-Id: If8c485092fc512efb9636cd568cb0543fb27688e
diff --git a/compiler/optimizing/code_generator_x86_64.cc b/compiler/optimizing/code_generator_x86_64.cc
index a3d3490..65b128a 100644
--- a/compiler/optimizing/code_generator_x86_64.cc
+++ b/compiler/optimizing/code_generator_x86_64.cc
@@ -1145,6 +1145,14 @@
UNUSED(constant);
}
+void LocationsBuilderX86_64::VisitMemoryBarrier(HMemoryBarrier* memory_barrier) {
+ memory_barrier->SetLocations(nullptr);
+}
+
+void InstructionCodeGeneratorX86_64::VisitMemoryBarrier(HMemoryBarrier* memory_barrier) {
+ GenerateMemoryBarrier(memory_barrier->GetBarrierKind());
+}
+
void LocationsBuilderX86_64::VisitReturnVoid(HReturnVoid* ret) {
ret->SetLocations(nullptr);
}