[driver] Improve r141053 by only emitting the warning if the original input
was assembly.  Otherwise, something like -save-temps causes the integrated
assembler to warn.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141055 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed