[Polly][test] Add missing %loadPolly.

This fixes check-polly when using the -load mechanism,
i.e. LLVM_POLLY_LINK_INTO_TOOLS=OFF.

GitOrigin-RevId: 15375631049acbf9c5729754ad5623a2670120a3
diff --git a/test/Isl/CodeGen/OpenMP/scev-rewriting.ll b/test/Isl/CodeGen/OpenMP/scev-rewriting.ll
index 13fffa3..0f6ca90 100644
--- a/test/Isl/CodeGen/OpenMP/scev-rewriting.ll
+++ b/test/Isl/CodeGen/OpenMP/scev-rewriting.ll
@@ -1,4 +1,4 @@
-; RUN: opt < %s -polly-vectorizer=polly -polly-parallel -polly-parallel-force -polly-process-unprofitable -polly-codegen -S | FileCheck %s
+; RUN: opt %loadPolly < %s -polly-vectorizer=polly -polly-parallel -polly-parallel-force -polly-process-unprofitable -polly-codegen -S | FileCheck %s
 ; CHECK: define internal void @DoStringSort_polly_subfn
 target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
 target triple = "aarch64-unknown-linux-gnueabi"