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| author | Chris Lattner <sabre@nondot.org> | 2010-02-22 22:15:39 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2010-02-22 22:15:39 +0000 |
| commit | 3df577b71beb6da2d9ac46233871eb081bacbf6a (patch) | |
| tree | 22fc71e795da3e9cb725a6012640b33e98308884 /include | |
| parent | 54de8c1b391d060efc5140f31c04979500fcfb58 (diff) | |
| download | llvm-3df577b71beb6da2d9ac46233871eb081bacbf6a.tar.gz llvm-3df577b71beb6da2d9ac46233871eb081bacbf6a.tar.bz2 llvm-3df577b71beb6da2d9ac46233871eb081bacbf6a.tar.xz | |
add some debug hooks for tracking the behavior of the isel.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96812 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include')
| -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); |