[llvm-commits] [llvm] r98036 - /llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp

[Chris Lattner]

Looks great, thanks Dan.

-Chris

On Mar 8, 2010, at 6:15 PM, Dan Gohman wrote:

> Author: djg
> Date: Mon Mar  8 20:15:05 2010
> New Revision: 98036
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=98036&view=rev
> Log:
> Attempt to make this debug output meaningful, both in the case of
> multibyte opcodes and in the case of multiple scopes.
> 
> Modified:
>    llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
> 
> Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp?rev=98036&r1=98035&r2=98036&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp (original)
> +++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp Mon Mar  8 20:15:05 2010
> @@ -2141,6 +2141,9 @@
> 
>   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 @@
>     // 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 @@
>       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)
> 
> 
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