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7198606: Improve VM optimization

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Remove incorrect code in OptimizeFill optimization.

Reviewed-by: roland, twisti
This commit is contained in:
Vladimir Kozlov 2012-09-19 13:58:31 -07:00
parent 38b305878c
commit 03d65ced3e
1 changed files with 3 additions and 0 deletions
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3
hotspot/src/share/vm/opto/loopTransform.cpp
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@ -2716,6 +2716,8 @@ bool PhaseIdealLoop::intrinsify_fill(IdealLoopTree* lpt) {
result_mem = new (C, 1) ProjNode(call,TypeFunc::Memory); result_mem = new (C, 1) ProjNode(call,TypeFunc::Memory);
_igvn.register_new_node_with_optimizer(result_mem); _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 // If this fill is tightly coupled to an allocation and overwrites
// the whole body, allow it to take over the zeroing. // the whole body, allow it to take over the zeroing.
AllocateNode* alloc = AllocateNode::Ideal_allocation(base, this); AllocateNode* alloc = AllocateNode::Ideal_allocation(base, this);
@ -2739,6 +2741,7 @@ bool PhaseIdealLoop::intrinsify_fill(IdealLoopTree* lpt) {
#endif #endif
} }
} }
*/
// Redirect the old control and memory edges that are outside the loop. // Redirect the old control and memory edges that are outside the loop.
Node* exit = head->loopexit()->proj_out(0); Node* exit = head->loopexit()->proj_out(0);