PR driver/91130 Use CL_DRIVER when handling of COLLECT_GCC_OPTIONS in lto-wrapper.c

Some options are handled differently by the main driver (gcc, g++,
etc) from the back-end compiler programs (cc1, cc1plus, etc) in that
in the driver they do not take an additional argument, while in the
compiler programs they do.  The processing option option CL_DRIVER
controls this alternative interpretation of the options.

The environment variable COLLECT_GCC_OPTIONS is the list of options to
add to a compile if the compiler re-invokes itself at some point.  As
such, the options are driver options, so CL_DRIVER should be used when
processing this list.  Currently lto-wrapper is doing this
incorrectly.

	PR driver/91130
	* lto-wrapper.c (find_and_merge_options): Use CL_DRIVER when
	processing COLLECT_GCC_OPTIONS.
	(run_gcc): Likewise.

From-SVN: r274176

gcc/ChangeLog

+2019-08-07  Richard Earnshaw  <rearnsha@arm.com>
+
+	PR driver/91130
+	* lto-wrapper.c (find_and_merge_options): Use CL_DRIVER when
+	processing COLLECT_GCC_OPTIONS.
+	(run_gcc): Likewise.
+
 2019-08-07  Bernd Edlinger  <bernd.edlinger@hotmail.de>
 
 	PR tree-optimization/91109

gcc/lto-wrapper.c

@@ -1010,7 +1010,7 @@ find_and_merge_options (int fd, off_t file_offset, const char *prefix,
       struct cl_decoded_option *f2decoded_options;
       unsigned int f2decoded_options_count;
       get_options_from_collect_gcc_options (collect_gcc,
-					    fopts, CL_LANG_ALL,
+					    fopts, CL_DRIVER,
 					    &f2decoded_options,
 					    &f2decoded_options_count);
       if (!fdecoded_options)
@@ -1283,7 +1283,7 @@ run_gcc (unsigned argc, char *argv[])
     fatal_error (input_location,
 		 "environment variable %<COLLECT_GCC_OPTIONS%> must be set");
   get_options_from_collect_gcc_options (collect_gcc, collect_gcc_options,
-					CL_LANG_ALL,
+					CL_DRIVER,
 					&decoded_options,
 					&decoded_options_count);