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7004555: Add new policy for one iteration loops

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Add new policy for one iteration loops (mostly formal pre- loops).

Reviewed-by: never
This commit is contained in:
Vladimir Kozlov 2011-04-08 14:56:22 -07:00
parent fe74e1ba6a
commit 2096fd712c
3 changed files with 164 additions and 56 deletions
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15
hotspot/src/share/vm/opto/loopnode.cpp
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@ -1450,6 +1450,21 @@ void IdealLoopTree::dump_head( ) const {
if (_head->is_CountedLoop()) {
CountedLoopNode *cl = _head->as_CountedLoop();
tty->print(" counted");
Node* init_n = cl->init_trip();
if (init_n != NULL && init_n->is_Con())
tty->print(" [%d,", cl->init_trip()->get_int());
else
tty->print(" [int,");
Node* limit_n = cl->limit();
if (limit_n != NULL && limit_n->is_Con())
tty->print("%d),", cl->limit()->get_int());
else
tty->print("int),");
int stride_con = cl->stride_con();
if (stride_con > 0) tty->print("+");
tty->print("%d", stride_con);
if (cl->is_pre_loop ()) tty->print(" pre" );
if (cl->is_main_loop()) tty->print(" main");
if (cl->is_post_loop()) tty->print(" post");