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8031755: Type speculation should be used to optimize explicit null checks

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Feed profiling data about reference nullness to type speculation.

Reviewed-by: kvn, iveresov
This commit is contained in:
Roland Westrelin 2014-03-31 09:08:53 +02:00
parent f5d6f0ceb8
commit fa3b0a8f47
16 changed files with 683 additions and 418 deletions
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hotspot/src/share/vm/runtime/deoptimization.cpp
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@ -1839,6 +1839,7 @@ const char* Deoptimization::_trap_reason_name[Reason_LIMIT] = {
"predicate",
"loop_limit_check",
"speculate_class_check",
"speculate_null_check",
"rtm_state_change"
};
const char* Deoptimization::_trap_action_name[Action_LIMIT] = {