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8155638: Resource allocated BitMaps are often cleared twice

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Reviewed-by: neliasso, kvn
This commit is contained in:
Stefan Karlsson 2016-06-08 11:15:49 +02:00
parent 47309c3715
commit 23e05cabc5
9 changed files with 9 additions and 40 deletions
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14
hotspot/src/share/vm/compiler/methodLiveness.cpp
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@ -137,11 +137,6 @@ MethodLiveness::MethodLiveness(Arena* arena, ciMethod* method)
_arena = arena;
_method = method;
_bit_map_size_bits = method->max_locals();
#ifdef COMPILER1
_bci_block_start.clear();
#endif
}
void MethodLiveness::compute_liveness() {
@ -587,14 +582,6 @@ MethodLiveness::BasicBlock::BasicBlock(MethodLiveness *analyzer, int start, int
new (analyzer->arena()) GrowableArray<MethodLiveness::BasicBlock*>(analyzer->arena(), 5, 0, NULL);
_exception_predecessors =
new (analyzer->arena()) GrowableArray<MethodLiveness::BasicBlock*>(analyzer->arena(), 5, 0, NULL);
_normal_exit.clear();
_exception_exit.clear();
_entry.clear();
// this initialization is not strictly necessary.
// _gen and _kill are cleared at the beginning of compute_gen_kill_range()
_gen.clear();
_kill.clear();
}
@ -1020,7 +1007,6 @@ MethodLivenessResult MethodLiveness::BasicBlock::get_liveness_at(ciMethod* metho
_last_bci = bci;
}
answer.clear();
answer.set_union(_normal_exit);
answer.set_difference(_kill);
answer.set_union(_gen);