[x86] Fix an embarressing bug in the INSERTPS formation code. The mask

[oota-llvm.git] / lib / IR / ConstantFold.cpp

diff --git a/lib/IR/ConstantFold.cpp b/lib/IR/ConstantFold.cpp
index 9124c1119357979bc5f8a34ec5935525bcf0311e..b96d1540d715547e98d5ff89a32178e1cd620674 100644 (file)
--- a/lib/IR/ConstantFold.cpp
+++ b/lib/IR/ConstantFold.cpp
@@ -674,6 +674,9 @@ Constant *llvm::ConstantFoldCastInstruction(unsigned opc, Constant *V,
     }
     return nullptr;
   case Instruction::Trunc: {
+    if (V->getType()->isVectorTy())
+      return nullptr;
+
     uint32_t DestBitWidth = cast<IntegerType>(DestTy)->getBitWidth();
     if (ConstantInt *CI = dyn_cast<ConstantInt>(V)) {
       return ConstantInt::get(V->getContext(),