[TableGen] Use SmallVector::assign instead of a resize and replace element.

llvm-svn: 253960
diff --git a/llvm/utils/TableGen/CodeGenDAGPatterns.cpp b/llvm/utils/TableGen/CodeGenDAGPatterns.cpp
index aac8470..4155111 100644
--- a/llvm/utils/TableGen/CodeGenDAGPatterns.cpp
+++ b/llvm/utils/TableGen/CodeGenDAGPatterns.cpp
@@ -194,8 +194,7 @@
     // multiple different integer types, replace them with a single iPTR.
     if ((InVT.TypeVec[0] == MVT::iPTR || InVT.TypeVec[0] == MVT::iPTRAny) &&
         TypeVec.size() != 1) {
-      TypeVec.resize(1);
-      TypeVec[0] = InVT.TypeVec[0];
+      TypeVec.assign(1, InVT.TypeVec[0]);
       MadeChange = true;
     }