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8031752: Failed speculative optimizations should be reattempted when root of compilation is different

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Support for speculative traps that keep track of the root of the compilation in which a trap occurs.

Reviewed-by: kvn, twisti
This commit is contained in:
Roland Westrelin 2014-02-25 18:16:24 +01:00
parent 532b570e81
commit 493557fc90
16 changed files with 772 additions and 164 deletions
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6
hotspot/src/share/vm/runtime/globals.hpp
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@ -3078,9 +3078,15 @@ class CommandLineFlags {
product(intx, PerMethodTrapLimit, 100, \
"Limit on traps (of one kind) in a method (includes inlines)") \
\
experimental(intx, PerMethodSpecTrapLimit, 5000, \
"Limit on speculative traps (of one kind) in a method (includes inlines)") \
\
product(intx, PerBytecodeTrapLimit, 4, \
"Limit on traps (of one kind) at a particular BCI") \
\
experimental(intx, SpecTrapLimitExtraEntries, 3, \
"Extra method data trap entries for speculation") \
\
develop(intx, InlineFrequencyRatio, 20, \
"Ratio of call site execution to caller method invocation") \
\