Add support for select constant expressions to the CBE, fixing SIOD


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12589 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/CBackend/CBackend.cpp b/lib/Target/CBackend/CBackend.cpp
index 54b8bd3..807f8ab 100644
--- a/lib/Target/CBackend/CBackend.cpp
+++ b/lib/Target/CBackend/CBackend.cpp
@@ -388,6 +388,15 @@
                               gep_type_end(CPV));
       Out << "))";
       return;
+    case Instruction::Select:
+      Out << "(";
+      printConstant(CE->getOperand(0));
+      Out << "?";
+      printConstant(CE->getOperand(1));
+      Out << ":";
+      printConstant(CE->getOperand(2));
+      Out << ")";
+      return;
     case Instruction::Add:
     case Instruction::Sub:
     case Instruction::Mul: