Concatenate two FileCheck lines in a test.

'cc1' is a valid sequence of hexadecimal and sometimes can occur in the path
when testing.  This can lead to FileCheck matching the incorrect occurance
of the 'cc1' string and causing a test failure.  Join two adjacent flags
together into one check to prevent this.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@280189 91177308-0d34-0410-b5e6-96231b3b80d8