For PR950:
This patch converts the old SHR instruction into two instructions,
AShr (Arithmetic) and LShr (Logical). The Shr instructions now are not
dependent on the sign of their operands.

llvm-svn: 31542
diff --git a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
index de9f8ec..78f5941 100644
--- a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
+++ b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
@@ -368,7 +368,8 @@
       case Instruction::Or:
       case Instruction::Xor:
       case Instruction::Shl:
-      case Instruction::Shr:
+      case Instruction::LShr:
+      case Instruction::AShr:
       case Instruction::SetEQ:
       case Instruction::SetNE:
       case Instruction::SetLT: