On 11/9/20 8:38 AM, Patrick Palka via Gcc-patches wrote: > This speeds up handle_pragma_diagnostic by avoiding computing a spelling > suggestion for an unrecognized option inside a #pragma directive when > -Wpragmas warnings are being suppressed. > > In the range-v3 library, which contains many instances of > > #pragma GCC diagnostic push > #pragma GCC diagnostic ignored "-Wpragmas" > #pragma GCC diagnostic ignored "-Wfoo" > ... > #pragma GCC diagnostic pop > > compile time is reduced by 33% in some of its tests. > > Bootstrapped and regtested on x86_64-pc-linux-gnu, does this look OK for > trunk? > > gcc/c-family/ChangeLog: > > * c-pragma.c (handle_pragma_diagnostic): Split the > unknown-option -Wpragmas diagnostic into a warning and a > subsequent note containing a spelling suggestion. Avoid > computing the suggestion if -Wpragmas warnings are being > suppressed. > > gcc/testsuite/ChangeLog: > > * gcc.dg/pragma-diag-6.c: Adjust expected diagnostics > appropriately.
OK jeff
