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6940726: Use BIS instruction for allocation prefetch on Sparc

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Use BIS instruction for allocation prefetch on Sparc

Reviewed-by: twisti
This commit is contained in:
Vladimir Kozlov 2010-04-07 12:39:27 -07:00
parent 629d139cac
commit f6934fd3b7
6 changed files with 93 additions and 7 deletions
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3
hotspot/src/share/vm/runtime/globals.hpp
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@ -2708,7 +2708,8 @@ class CommandLineFlags {
product(intx, AllocatePrefetchStyle, 1, \
"0 = no prefetch, " \
"1 = prefetch instructions for each allocation, " \
"2 = use TLAB watermark to gate allocation prefetch") \
"2 = use TLAB watermark to gate allocation prefetch, " \
"3 = use BIS instruction on Sparc for allocation prefetch") \
\
product(intx, AllocatePrefetchDistance, -1, \
"Distance to prefetch ahead of allocation pointer") \