--- a/hotspot/src/share/vm/opto/ifnode.cpp Thu Jul 21 11:25:07 2011 -0700
+++ b/hotspot/src/share/vm/opto/ifnode.cpp Tue Jul 26 19:35:23 2011 -0700
@@ -1009,6 +1009,13 @@
int prev_op = prev_dom->Opcode();
Node *top = igvn->C->top(); // Shortcut to top
+ // Loop predicates may have depending checks which should not
+ // be skipped. For example, range check predicate has two checks
+ // for lower and upper bounds.
+ ProjNode* unc_proj = proj_out(1 - prev_dom->as_Proj()->_con)->as_Proj();
+ if (PhaseIdealLoop::is_uncommon_trap_proj(unc_proj, Deoptimization::Reason_predicate))
+ prev_dom = idom;
+
// Now walk the current IfNode's projections.
// Loop ends when 'this' has no more uses.
for (DUIterator_Last imin, i = last_outs(imin); i >= imin; --i) {
@@ -1019,9 +1026,9 @@
// or TOP if the dominating projection is of opposite type.
// Data-target will be used as the new control edge for the non-CFG
// nodes like Casts and Loads.
- Node *data_target = (ifp->Opcode() == prev_op ) ? prev_dom : top;
+ Node *data_target = (ifp->Opcode() == prev_op) ? prev_dom : top;
// Control-target is just the If's immediate dominator or TOP.
- Node *ctrl_target = (ifp->Opcode() == prev_op ) ? idom : top;
+ Node *ctrl_target = (ifp->Opcode() == prev_op) ? idom : top;
// For each child of an IfTrue/IfFalse projection, reroute.
// Loop ends when projection has no more uses.