[PATCH] D12437: ComputeSignBits: look through SELECT_CC, not just SELECT

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Should be pretty trivial, just a copy-paste of the SELECT case.

Repository:
  rL LLVM

http://reviews.llvm.org/D12437

Files:
  lib/CodeGen/SelectionDAG/SelectionDAG.cpp

Index: lib/CodeGen/SelectionDAG/SelectionDAG.cpp
===================================================================
--- lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -2563,6 +2563,11 @@
     if (Tmp == 1) return 1;  // Early out.
     Tmp2 = ComputeNumSignBits(Op.getOperand(2), Depth+1);
     return std::min(Tmp, Tmp2);
+  case ISD::SELECT_CC:
+    Tmp = ComputeNumSignBits(Op.getOperand(2), Depth+1);
+    if (Tmp == 1) return 1;  // Early out.
+    Tmp2 = ComputeNumSignBits(Op.getOperand(3), Depth+1);
+    return std::min(Tmp, Tmp2);
   case ISD::SMIN:
   case ISD::SMAX:
   case ISD::UMIN:


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