Fixed test not to depend on loop unrolling pass

[mamai]

Summary

This test have been broken by http://reviews.llvm.org/D19827, which re-enables loop unrolling at /Os. Since the goal of this test does not seem related unrolling, just disabled loop unroll pass when compiling this test.

[mamai]

The test have been fixed otherwise in rev 268523.

test/CodeGenObjCXX/arc-cxx11-init-list.mm

-// RUN: %clang_cc1 -triple armv7-ios5.0 -std=c++11 -fobjc-arc -Os -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple armv7-ios5.0 -std=c++11 -fobjc-arc -Os -fno-unroll-loops -emit-llvm -o - %s | FileCheck %s
 
 typedef __SIZE_TYPE__ size_t;
 
 namespace std {
 template <typename _Ep>
 class initializer_list {
   const _Ep* __begin_;
   size_t __size_;