hotspot Udiff src/cpu/x86/vm/templateInterpreterGenerator_x86.cpp (original) (raw)

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rev 12543 : imported patch x86 rev 12553 : imported patch always_tag_x86

@@ -1,7 +1,7 @@ /*

• • Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved.

• • Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved.
  • DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  • This code is free software; you can redistribute it and/or modify it
  • under the terms of the GNU General Public License version 2 only, as
  • published by the Free Software Foundation.

@@ -1191,18 +1191,36 @@

// If result is an oop unbox and store it in frame where gc will see it // and result handler will pick it up

{

• Label no_oop, store_result;

• Label no_oop, not_weak, store_result; __ lea(t, ExternalAddress(AbstractInterpreter::result_handler(T_OBJECT))); __ cmpptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); __ jcc(Assembler::notEqual, no_oop); // retrieve result __ pop(ltos);
• // Unbox oop result, e.g. JNIHandles::resolve value. __ testptr(rax, rax);

• __ jcc(Assembler::zero, store_result);

• __ jcc(Assembler::zero, store_result); // Use NULL as-is.
• __ testptr(rax, JNIHandles::weak_tag_mask); // Test for jweak tag.
• __ jcc(Assembler::zero, not_weak);
• // Resolve jweak.
• __ movptr(rax, Address(rax, -JNIHandles::weak_tag_value));

+#if INCLUDE_ALL_GCS

• if (UseG1GC) {

•  __ g1_write_barrier_pre(noreg /* obj */,

•                          rax /* pre_val */,

•                          thread /* thread */,

•                          t /* tmp */,

•                          true /* tosca_live */,

•                          true /* expand_call */);

• }

+#endif // INCLUDE_ALL_GCS

• __ jmp(store_result);
• __ bind(not_weak);
• // Resolve (untagged) jobject. __ movptr(rax, Address(rax, 0)); __ bind(store_result); __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize), rax); // keep stack depth as expected by pushing oop which will eventually be discarded __ push(ltos);

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