--- a/src/hotspot/cpu/x86/sharedRuntime_x86_64.cpp Thu May 30 11:42:53 2019 +0200
+++ b/src/hotspot/cpu/x86/sharedRuntime_x86_64.cpp Thu May 30 13:39:13 2019 +0300
@@ -974,6 +974,27 @@
BarrierSetAssembler* bs = BarrierSet::barrier_set()->barrier_set_assembler();
bs->c2i_entry_barrier(masm);
+ // Class initialization barrier for static methods
+ if (VM_Version::supports_fast_class_init_checks()) {
+ Label L_skip_barrier;
+ Register method = rbx;
+
+ { // Bypass the barrier for non-static methods
+ Register flags = rscratch1;
+ __ movl(flags, Address(method, Method::access_flags_offset()));
+ __ testl(flags, JVM_ACC_STATIC);
+ __ jcc(Assembler::zero, L_skip_barrier); // non-static
+ }
+
+ Register klass = rscratch1;
+ __ load_method_holder(klass, method);
+ __ clinit_barrier(klass, r15_thread, &L_skip_barrier /*L_fast_path*/);
+
+ __ jump(RuntimeAddress(SharedRuntime::get_handle_wrong_method_stub())); // slow path
+
+ __ bind(L_skip_barrier);
+ }
+
gen_c2i_adapter(masm, total_args_passed, comp_args_on_stack, sig_bt, regs, skip_fixup);
__ flush();
@@ -2140,6 +2161,17 @@
int vep_offset = ((intptr_t)__ pc()) - start;
+ if (VM_Version::supports_fast_class_init_checks() && method->needs_clinit_barrier()) {
+ Label L_skip_barrier;
+ Register klass = r10;
+ __ mov_metadata(klass, method->method_holder()); // InstanceKlass*
+ __ clinit_barrier(klass, r15_thread, &L_skip_barrier /*L_fast_path*/);
+
+ __ jump(RuntimeAddress(SharedRuntime::get_handle_wrong_method_stub())); // slow path
+
+ __ bind(L_skip_barrier);
+ }
+
#ifdef COMPILER1
// For Object.hashCode, System.identityHashCode try to pull hashCode from object header if available.
if ((InlineObjectHash && method->intrinsic_id() == vmIntrinsics::_hashCode) || (method->intrinsic_id() == vmIntrinsics::_identityHashCode)) {