Inlining write barrier

Author: udesou

src/llvm-late-gc-lowering.cpp

@@ -2617,7 +2617,7 @@ bool LateLowerGCFrame::CleanupIR(Function &F, State *S, bool *CFGModified) {
         // FIXME: Currently we call write barrier with the src object (parent).
         // This works fine for object barrier for generational plans (such as stickyimmix), which does not use the target object at all.
         // But for other MMTk plans, we need to be careful.
-        const bool INLINE_WRITE_BARRIER = false;
+        const bool INLINE_WRITE_BARRIER = true;
         if (CI->getCalledOperand() == write_barrier_func) {
             if (MMTK_NEEDS_WRITE_BARRIER == MMTK_OBJECT_BARRIER) {
                 if (INLINE_WRITE_BARRIER) {