diff options
| -rw-r--r-- | include/llvm/CodeGen/DAGISelHeader.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/DAGISelHeader.h b/include/llvm/CodeGen/DAGISelHeader.h index d800281bd5..63d15cda6c 100644 --- a/include/llvm/CodeGen/DAGISelHeader.h +++ b/include/llvm/CodeGen/DAGISelHeader.h @@ -336,6 +336,10 @@ SDNode *SelectCodeCommon(SDNode *NodeToMatch, const unsigned char *MatcherTable, // update the chain results when the pattern is complete. SmallVector<SDNode*, 3> ChainNodesMatched; + DEBUG(errs() << "ISEL: Starting pattern match on root node: "; + NodeToMatch->dump(CurDAG); + errs() << '\n'); + // Interpreter starts at opcode #0. unsigned MatcherIndex = 0; while (1) { @@ -722,6 +726,8 @@ SDNode *SelectCodeCommon(SDNode *NodeToMatch, const unsigned char *MatcherTable, std::copy(MatchedMemRefs.begin(), MatchedMemRefs.end(), MemRefs); Res->setMemRefs(MemRefs, MemRefs + MatchedMemRefs.size()); } + + DEBUG(errs() << " Created node: "; Res->dump(CurDAG); errs() << "\n"); continue; } @@ -777,6 +783,9 @@ SDNode *SelectCodeCommon(SDNode *NodeToMatch, const unsigned char *MatcherTable, assert(NodeToMatch->use_empty() && "Didn't replace all uses of the node?"); + + DEBUG(errs() << "ISEL: Match complete!\n"); + // FIXME: We just return here, which interacts correctly with SelectRoot // above. We should fix this to not return an SDNode* anymore. return 0; @@ -794,6 +803,9 @@ SDNode *SelectCodeCommon(SDNode *NodeToMatch, const unsigned char *MatcherTable, RecordedNodes.resize(LastScope.NumRecordedNodes); NodeStack.resize(LastScope.NodeStackSize); N = NodeStack.back(); + + DEBUG(errs() << " Match failed at index " << MatcherIndex + << " continuing at " << LastScope.FailIndex << "\n"); if (LastScope.NumMatchedMemRefs != MatchedMemRefs.size()) MatchedMemRefs.resize(LastScope.NumMatchedMemRefs); |