Mercurial > hg > openjdk > jdk6 > hotspot
changeset 2439:b122c11c6c5f jdk6-b27
7198606: Improve VM optimization
Summary: Remove incorrect code in OptimizeFill optimization.
Reviewed-by: roland, twisti
| author | kvn |
|---|---|
| date | Wed, 19 Sep 2012 13:58:31 -0700 |
| parents | 15ddddb87e6c |
| children | cd74fab0a5e3 |
| files | src/share/vm/opto/loopTransform.cpp |
| diffstat | 1 files changed, 3 insertions(+), 0 deletions(-) [+] |
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--- a/src/share/vm/opto/loopTransform.cpp Tue Jun 19 15:45:14 2012 -0700 +++ b/src/share/vm/opto/loopTransform.cpp Wed Sep 19 13:58:31 2012 -0700 @@ -2721,6 +2721,8 @@ result_mem = new (C, 1) ProjNode(call,TypeFunc::Memory); _igvn.register_new_node_with_optimizer(result_mem); +/* Disable following optimization until proper fix (add missing checks). + // If this fill is tightly coupled to an allocation and overwrites // the whole body, allow it to take over the zeroing. AllocateNode* alloc = AllocateNode::Ideal_allocation(base, this); @@ -2744,6 +2746,7 @@ #endif } } +*/ // Redirect the old control and memory edges that are outside the loop. Node* exit = head->loopexit()->proj_out(0);