Mercurial > hg > truffle
diff src/cpu/x86/vm/x86_64.ad @ 4777:e9a5e0a812c8
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 |
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--- a/src/cpu/x86/vm/x86_64.ad Sat Jan 07 10:39:23 2012 -0800 +++ b/src/cpu/x86/vm/x86_64.ad Sat Jan 07 13:26:43 2012 -0800 @@ -11511,13 +11511,13 @@ // inlined locking and unlocking instruct cmpFastLock(rFlagsReg cr, - rRegP object, rRegP box, rax_RegI tmp, rRegP scr) + rRegP object, rbx_RegP box, rax_RegI tmp, rRegP scr) %{ match(Set cr (FastLock object box)); - effect(TEMP tmp, TEMP scr); + effect(TEMP tmp, TEMP scr, USE_KILL box); ins_cost(300); - format %{ "fastlock $object,$box,$tmp,$scr" %} + format %{ "fastlock $object,$box\t! kills $box,$tmp,$scr" %} ins_encode(Fast_Lock(object, box, tmp, scr)); ins_pipe(pipe_slow); %} @@ -11526,10 +11526,10 @@ rRegP object, rax_RegP box, rRegP tmp) %{ match(Set cr (FastUnlock object box)); - effect(TEMP tmp); + effect(TEMP tmp, USE_KILL box); ins_cost(300); - format %{ "fastunlock $object, $box, $tmp" %} + format %{ "fastunlock $object,$box\t! kills $box,$tmp" %} ins_encode(Fast_Unlock(object, box, tmp)); ins_pipe(pipe_slow); %}