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6743188: incomplete fix for 6700047 C2 failed in idom_no_update

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Reviewed-by: rasbold, kvn
This commit is contained in:
Tom Rodriguez 2008-10-03 13:58:20 -07:00
parent adce6fc49a
commit 043fde10e5
4 changed files with 29 additions and 20 deletions
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12
hotspot/src/share/vm/opto/loopnode.hpp
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@ -325,12 +325,14 @@ public:
// Returns TRUE if loop tree is structurally changed.
bool beautify_loops( PhaseIdealLoop *phase );
// Perform iteration-splitting on inner loops. Split iterations to avoid
// range checks or one-shot null checks.
void iteration_split( PhaseIdealLoop *phase, Node_List &old_new );
// Perform iteration-splitting on inner loops. Split iterations to
// avoid range checks or one-shot null checks. Returns false if the
// current round of loop opts should stop.
bool iteration_split( PhaseIdealLoop *phase, Node_List &old_new );
// Driver for various flavors of iteration splitting
void iteration_split_impl( PhaseIdealLoop *phase, Node_List &old_new );
// Driver for various flavors of iteration splitting. Returns false
// if the current round of loop opts should stop.
bool iteration_split_impl( PhaseIdealLoop *phase, Node_List &old_new );
// Given dominators, try to find loops with calls that must always be
// executed (call dominates loop tail). These loops do not need non-call