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6384206: Phis which are later unneeded are impairing our ability to inline based on static types

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Reviewed-by: rasbold, jrose
This commit is contained in:
Tom Rodriguez 2008-09-17 12:59:52 -07:00
parent eee15b163e
commit 4b1e242299
18 changed files with 1082 additions and 401 deletions
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4
hotspot/src/share/vm/opto/loopopts.cpp
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@ -2667,6 +2667,10 @@ void PhaseIdealLoop::reorg_offsets( IdealLoopTree *loop ) {
// Fix this by adjusting to use the post-increment trip counter.
Node *phi = cl->phi();
if( !phi ) return; // Dead infinite loop
// Shape messed up, probably by iteration_split_impl
if (phi->in(LoopNode::LoopBackControl) != cl->incr()) return;
bool progress = true;
while (progress) {
progress = false;