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7074017: Introduce MemBarAcquireLock/MemBarReleaseLock nodes for monitor enter/exit code paths

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Replace MemBarAcquire/MemBarRelease nodes on the monitor enter/exit code paths with new MemBarAcquireLock/MemBarReleaseLock nodes

Reviewed-by: kvn, twisti
This commit is contained in:
Roland Westrelin 2011-08-02 18:36:40 +02:00
parent 9cd1a00e3f
commit b543a07b9a
11 changed files with 45 additions and 83 deletions
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10
hotspot/src/share/vm/opto/matcher.hpp
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@ -441,16 +441,6 @@ public:
else { fatal("SoftMatchFailure is not allowed except in product"); }
}
// Used by the DFA in dfa_sparc.cpp. Check for a prior FastLock
// acting as an Acquire and thus we don't need an Acquire here. We
// retain the Node to act as a compiler ordering barrier.
static bool prior_fast_lock( const Node *acq );
// Used by the DFA in dfa_sparc.cpp. Check for a following
// FastUnLock acting as a Release and thus we don't need a Release
// here. We retain the Node to act as a compiler ordering barrier.
static bool post_fast_unlock( const Node *rel );
// Check for a following volatile memory barrier without an
// intervening load and thus we don't need a barrier here. We
// retain the Node to act as a compiler ordering barrier.