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comparison src/cpu/x86/vm/stubGenerator_x86_64.cpp @ 671:d0994e5bebce

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6822204: volatile fences should prefer lock:addl to actual mfence instructions Reviewed-by: kvn, phh
author never
date Thu, 26 Mar 2009 14:31:45 -0700
parents bd441136a5ce
children df6caf649ff7
comparison
equal deleted inserted replaced
668:90a66aa50514 671:d0994e5bebce
635 // 635 //
636 // Result: 636 // Result:
637 address generate_orderaccess_fence() { 637 address generate_orderaccess_fence() {
638 StubCodeMark mark(this, "StubRoutines", "orderaccess_fence"); 638 StubCodeMark mark(this, "StubRoutines", "orderaccess_fence");
639 address start = __ pc(); 639 address start = __ pc();
640 __ mfence(); 640 __ membar(Assembler::StoreLoad);
641 __ ret(0); 641 __ ret(0);
642 642
643 return start; 643 return start;
644 } 644 }
645 645