From: Fiona Glaser <escha@apple.com>
Date: Sat, 29 Aug 2015 23:04:38 +0000 (+0000)
Subject: SelectionDAG: add missing ComputeSignBits case for SELECT_CC
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=49d0fee4f60bdecd7dba946aa64f405c9864bd8f;p=oota-llvm.git

SelectionDAG: add missing ComputeSignBits case for SELECT_CC

Identical to SELECT, just with different operand numbers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@246366 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 82537eb8923..7ccaaf72c37 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -2613,6 +2613,11 @@ unsigned SelectionDAG::ComputeNumSignBits(SDValue Op, unsigned Depth) const{
     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: