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comparison src/cpu/x86/vm/x86_64.ad @ 4777:e9a5e0a812c8

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7125896: Eliminate nested locks Summary: Nested locks elimination done before lock nodes expansion by looking for outer locks of the same object. Reviewed-by: never, twisti
author kvn
date Sat, 07 Jan 2012 13:26:43 -0800
parents 1dc233a8c7fe
children fd8114661503
comparison
equal deleted inserted replaced
4776:5da7201222d5 4777:e9a5e0a812c8
11509 11509
11510 // ============================================================================ 11510 // ============================================================================
11511 // inlined locking and unlocking 11511 // inlined locking and unlocking
11512 11512
11513 instruct cmpFastLock(rFlagsReg cr, 11513 instruct cmpFastLock(rFlagsReg cr,
11514 rRegP object, rRegP box, rax_RegI tmp, rRegP scr) 11514 rRegP object, rbx_RegP box, rax_RegI tmp, rRegP scr)
11515 %{ 11515 %{
11516 match(Set cr (FastLock object box)); 11516 match(Set cr (FastLock object box));
11517 effect(TEMP tmp, TEMP scr); 11517 effect(TEMP tmp, TEMP scr, USE_KILL box);
11518 11518
11519 ins_cost(300); 11519 ins_cost(300);
11520 format %{ "fastlock $object,$box,$tmp,$scr" %} 11520 format %{ "fastlock $object,$box\t! kills $box,$tmp,$scr" %}
11521 ins_encode(Fast_Lock(object, box, tmp, scr)); 11521 ins_encode(Fast_Lock(object, box, tmp, scr));
11522 ins_pipe(pipe_slow); 11522 ins_pipe(pipe_slow);
11523 %} 11523 %}
11524 11524
11525 instruct cmpFastUnlock(rFlagsReg cr, 11525 instruct cmpFastUnlock(rFlagsReg cr,
11526 rRegP object, rax_RegP box, rRegP tmp) 11526 rRegP object, rax_RegP box, rRegP tmp)
11527 %{ 11527 %{
11528 match(Set cr (FastUnlock object box)); 11528 match(Set cr (FastUnlock object box));
11529 effect(TEMP tmp); 11529 effect(TEMP tmp, USE_KILL box);
11530 11530
11531 ins_cost(300); 11531 ins_cost(300);
11532 format %{ "fastunlock $object, $box, $tmp" %} 11532 format %{ "fastunlock $object,$box\t! kills $box,$tmp" %}
11533 ins_encode(Fast_Unlock(object, box, tmp)); 11533 ins_encode(Fast_Unlock(object, box, tmp));
11534 ins_pipe(pipe_slow); 11534 ins_pipe(pipe_slow);
11535 %} 11535 %}
11536 11536
11537 11537