On 09/06/2015 03:57 AM, Chung-Lin Tang wrote:
Hi, Currently most non-target specific options are skipped when crossing the LTO/offload processing border, however since there are still quite a number of warning calls in many target backends, it makes sense to save and propagate the associated options, to preserve consistency in warning behavior.For example, currently: $ x86_64-pc-linux-gnu-gcc -fopenacc test.c -fno-diagnostics-show-caret y.c: In function 'main._omp_fn.0': y.c:6:11: warning: using num_workers (32), ignoring 500 #pragma acc parallel num_workers(500) ^ (note: this warning message is triggered by nvptx code currently only on gomp-4_0-branch, but illustrates the point) The caret stills shows, because -fno-diagnostics-show-caret does not reach the accel compiler. -flto should also have a similar issue. The attached patch allows a series of -fdiagnostics-* options to be propagated by lto-wrapper. I've tested this patch without regressions, is this okay for trunk? Thanks, Chung-Lin 2015-09-06 Chung-Lin Tang <clt...@codesourcery.com> * lto-wrapper.c (merge_and_complain): Add OPT_fdiagnostics_show_caret, OPT_fdiagnostics_show_option, OPT_fdiagnostics_show_location_, and OPT_fshow_column to handled saved option cases. (append_compiler_options): Do not skip the above added options.
OK. Please install. Thanks, Jeff
