diff options
Diffstat (limited to 'src/share/vm/opto/block.cpp')
| -rw-r--r-- | src/share/vm/opto/block.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/share/vm/opto/block.cpp b/src/share/vm/opto/block.cpp index c6b94a45a..be861b643 100644 --- a/src/share/vm/opto/block.cpp +++ b/src/share/vm/opto/block.cpp @@ -467,6 +467,10 @@ void PhaseCFG::insert_goto_at(uint block_no, uint succ_no) { // get successor block succ_no assert(succ_no < in->_num_succs, "illegal successor number"); Block* out = in->_succs[succ_no]; + // Compute frequency of the new block. Do this before inserting + // new block in case succ_prob() needs to infer the probability from + // surrounding blocks. + float freq = in->_freq * in->succ_prob(succ_no); // get ProjNode corresponding to the succ_no'th successor of the in block ProjNode* proj = in->_nodes[in->_nodes.size() - in->_num_succs + succ_no]->as_Proj(); // create region for basic block @@ -491,6 +495,8 @@ void PhaseCFG::insert_goto_at(uint block_no, uint succ_no) { } // remap predecessor's successor to new block in->_succs.map(succ_no, block); + // Set the frequency of the new block + block->_freq = freq; // add new basic block to basic block list _blocks.insert(block_no + 1, block); _num_blocks++; |