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comparison src/share/vm/opto/macro.cpp @ 3345:bad7ecd0b6ed

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5091921: Sign flip issues in loop optimizer Summary: Fix integer overflow problem in the code generated by loop optimizer. Reviewed-by: never
author kvn
date Wed, 04 May 2011 13:12:42 -0700
parents 149bb459be66
children 293f68bda347
comparison
equal deleted inserted replaced
3344:0139aac70fb5 3345:bad7ecd0b6ed
2152 Node * n = C->macro_node(i-1); 2152 Node * n = C->macro_node(i-1);
2153 bool success = false; 2153 bool success = false;
2154 debug_only(int old_macro_count = C->macro_count();); 2154 debug_only(int old_macro_count = C->macro_count(););
2155 if (n->is_AbstractLock()) { 2155 if (n->is_AbstractLock()) {
2156 success = eliminate_locking_node(n->as_AbstractLock()); 2156 success = eliminate_locking_node(n->as_AbstractLock());
2157 } else if (n->Opcode() == Op_LoopLimit) {
2158 // Remove it from macro list and put on IGVN worklist to optimize.
2159 C->remove_macro_node(n);
2160 _igvn._worklist.push(n);
2161 success = true;
2157 } else if (n->Opcode() == Op_Opaque1 || n->Opcode() == Op_Opaque2) { 2162 } else if (n->Opcode() == Op_Opaque1 || n->Opcode() == Op_Opaque2) {
2158 _igvn.replace_node(n, n->in(1)); 2163 _igvn.replace_node(n, n->in(1));
2159 success = true; 2164 success = true;
2160 } 2165 }
2161 assert(success == (C->macro_count() < old_macro_count), "elimination reduces macro count"); 2166 assert(success == (C->macro_count() < old_macro_count), "elimination reduces macro count");