ConstantFold - ConstantFoldSelectInstruction - assume constant vector elements are...

Goes a bit further than rL372743 which added the early out - elements should be Constant so use cast<Constant> instead (and rely on the assert if anything fails).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@373321 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/IR/ConstantFold.cpp b/lib/IR/ConstantFold.cpp
index ee0ad322f4edc67bf4f374524f65bc2afb998b59..54814bbdaf3ce1de99c382986bc7252695e361fa 100644 (file)
--- a/lib/IR/ConstantFold.cpp
+++ b/lib/IR/ConstantFold.cpp
@@ -746,8 +746,7 @@ Constant *llvm::ConstantFoldSelectInstruction(Constant *Cond,
                                                     ConstantInt::get(Ty, i));
       Constant *V2Element = ConstantExpr::getExtractElement(V2,
                                                     ConstantInt::get(Ty, i));
-      Constant *Cond = dyn_cast<Constant>(CondV->getOperand(i));
-      if (!Cond) break;
+      auto *Cond = cast<Constant>(CondV->getOperand(i));
       if (V1Element == V2Element) {
         V = V1Element;
       } else if (isa<UndefValue>(Cond)) {