Don't pass -O0 to clang_cc1, it is the default.

llvm-svn: 189910
diff --git a/clang/test/CodeGen/attr-minsize.cpp b/clang/test/CodeGen/attr-minsize.cpp
index 997194d..0f07725 100644
--- a/clang/test/CodeGen/attr-minsize.cpp
+++ b/clang/test/CodeGen/attr-minsize.cpp
@@ -1,5 +1,5 @@
 // RUN: %clang_cc1 -Oz -emit-llvm %s -o - | FileCheck %s -check-prefix=Oz
-// RUN: %clang_cc1 -O0 -emit-llvm %s -o - | FileCheck %s -check-prefix=OTHER
+// RUN: %clang_cc1     -emit-llvm %s -o - | FileCheck %s -check-prefix=OTHER
 // RUN: %clang_cc1 -O1 -emit-llvm %s -o - | FileCheck %s -check-prefix=OTHER
 // RUN: %clang_cc1 -O2 -emit-llvm %s -o - | FileCheck %s -check-prefix=OTHER
 // RUN: %clang_cc1 -O3 -emit-llvm %s -o - | FileCheck %s -check-prefix=OTHER