From 52cc041ee5157d45e1139cf3bb631e4694070414 Mon Sep 17 00:00:00 2001 From: Dan Gohman Date: Tue, 9 Mar 2010 02:15:05 +0000 Subject: Attempt to make this debug output meaningful, both in the case of multibyte opcodes and in the case of multiple scopes. llvm-svn: 98036 --- llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'llvm/lib/CodeGen/SelectionDAG') diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp index 32fdd30ac8a..a82f0f71fea 100644 --- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp @@ -2141,6 +2141,9 @@ SelectCodeCommon(SDNode *NodeToMatch, const unsigned char *MatcherTable, while (1) { assert(MatcherIndex < TableSize && "Invalid index"); +#ifndef NDEBUG + unsigned CurrentOpcodeIndex = MatcherIndex; +#endif BuiltinOpcodes Opcode = (BuiltinOpcodes)MatcherTable[MatcherIndex++]; switch (Opcode) { case OPC_Scope: { @@ -2666,6 +2669,7 @@ SelectCodeCommon(SDNode *NodeToMatch, const unsigned char *MatcherTable, // If the code reached this point, then the match failed. See if there is // another child to try in the current 'Scope', otherwise pop it until we // find a case to check. + DEBUG(errs() << " Match failed at index " << CurrentOpcodeIndex << "\n"); while (1) { if (MatchScopes.empty()) { CannotYetSelect(NodeToMatch); @@ -2680,13 +2684,12 @@ SelectCodeCommon(SDNode *NodeToMatch, const unsigned char *MatcherTable, NodeStack.append(LastScope.NodeStack.begin(), LastScope.NodeStack.end()); N = NodeStack.back(); - DEBUG(errs() << " Match failed at index " << (MatcherIndex-1) - << " continuing at " << LastScope.FailIndex << "\n"); - if (LastScope.NumMatchedMemRefs != MatchedMemRefs.size()) MatchedMemRefs.resize(LastScope.NumMatchedMemRefs); MatcherIndex = LastScope.FailIndex; + DEBUG(errs() << " Continuing at " << MatcherIndex << "\n"); + InputChain = LastScope.InputChain; InputFlag = LastScope.InputFlag; if (!LastScope.HasChainNodesMatched) -- cgit v1.2.3