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6677629: PhaseIterGVN::subsume_node() should call hash_delete() and add_users_to_worklist()

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Use replace_node() method instead of subsume_node().

Reviewed-by: jrose, never
This commit is contained in:
Vladimir Kozlov 2010-06-28 14:54:39 -07:00
parent 8a416b2365
commit 448b83e288
11 changed files with 40 additions and 71 deletions
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8
hotspot/src/share/vm/opto/phaseX.cpp
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@ -1447,16 +1447,12 @@ Node *PhaseCCP::transform_once( Node *n ) {
Node* m = n->out(i);
if( m->is_Phi() ) {
assert(type(m) == Type::TOP, "Unreachable region should not have live phis.");
add_users_to_worklist(m);
hash_delete(m); // Yank from hash before hacking edges
subsume_node(m, nn);
replace_node(m, nn);
--i; // deleted this phi; rescan starting with next position
}
}
}
add_users_to_worklist(n); // Users of about-to-be-constant 'n'
hash_delete(n); // Removed 'n' from table before subsuming it
subsume_node(n,nn); // Update DefUse edges for new constant
replace_node(n,nn); // Update DefUse edges for new constant
}
return nn;
}