Mercurial > hg > graal-compiler
diff src/share/vm/opto/phaseX.cpp @ 1826:56601ef83436
6916062: assert(_inserts <= _insert_limit,"hash table overflow") in NodeHash::hash_insert
Summary: Missing check for not empty worklist when puting memory node back on worklist and expecting address type update.
Reviewed-by: never
author | kvn |
---|---|
date | Thu, 30 Sep 2010 18:31:45 -0700 |
parents | 6027dddc26c6 |
children | f95d63e2154a |
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--- a/src/share/vm/opto/phaseX.cpp Wed Sep 29 16:53:42 2010 -0700 +++ b/src/share/vm/opto/phaseX.cpp Thu Sep 30 18:31:45 2010 -0700 @@ -844,10 +844,33 @@ } #endif +#ifdef ASSERT + Node* prev = NULL; + uint rep_cnt = 0; +#endif + uint loop_count = 0; + // Pull from worklist; transform node; // If node has changed: update edge info and put uses on worklist. while( _worklist.size() ) { Node *n = _worklist.pop(); + if (++loop_count >= K * C->unique()) { + debug_only(n->dump(4);) + assert(false, "infinite loop in PhaseIterGVN::optimize"); + C->record_method_not_compilable("infinite loop in PhaseIterGVN::optimize"); + return; + } +#ifdef ASSERT + if (n == prev) { + if (++rep_cnt > 3) { + n->dump(4); + assert(false, "loop in Ideal transformation"); + } + } else { + rep_cnt = 0; + } + prev = n; +#endif if (TraceIterativeGVN && Verbose) { tty->print(" Pop "); NOT_PRODUCT( n->dump(); )