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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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2
hotspot/src/share/vm/oops/methodData.cpp
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@ -801,6 +801,8 @@ bool MethodData::is_speculative_trap_bytecode(Bytecodes::Code code) {
case Bytecodes::_invokeinterface:
case Bytecodes::_if_acmpeq:
case Bytecodes::_if_acmpne:
case Bytecodes::_ifnull:
case Bytecodes::_ifnonnull:
case Bytecodes::_invokestatic:
#ifdef COMPILER2
return UseTypeSpeculation;