On Wed, Jul 5, 2023 at 6:25 PM Thomas Schwinge <tho...@codesourcery.com> wrote: > > Hi! > > My original motivation for the following exercise what that, for example, > for: 'const unsigned char * GTY((atomic)) mode_table', we currently run > into 'const' mismatches, 'error: invalid conversion': > > [...] > gtype-desc.cc: In function 'void gt_pch_nx_lto_file_decl_data(void*)': > gtype-desc.cc:6531:34: error: invalid conversion from 'const void*' to > 'void*' [-fpermissive] > gt_pch_note_object ((*x).mode_table, x, > gt_pch_p_18lto_file_decl_data); > ^ > In file included from [...]/source-gcc/gcc/hash-table.h:247:0, > from [...]/source-gcc/gcc/coretypes.h:486, > from gtype-desc.cc:23: > [...]/source-gcc/gcc/ggc.h:47:12: note: initializing argument 1 of 'int > gt_pch_note_object(void*, void*, gt_note_pointers, size_t)' > extern int gt_pch_note_object (void *, void *, gt_note_pointers, > ^ > make[2]: *** [Makefile:1180: gtype-desc.o] Error 1 > [...] > > ..., as I had reported as "'GTY' issues: (1) 'const' build error" in > <https://inbox.sourceware.org/87o7kxuq9s....@euler.schwinge.homeip.net> > 'Adjust LTO mode tables for "Machine_Mode: Extend machine_mode from 8 to 16 > bits"'. > > That said: > > On 2011-05-16T02:13:56+0200, "Nicola Pero" <nicola.p...@meta-innovation.com> > wrote: > > This patch adds a new GTY option, "atomic", which is similar to the > > identical option you have with Boehm GC > > and which can be used with pointers to inform the GC/PCH machinery that > > they point to an area of memory that > > contains no pointers (and hence needs no scanning). > > > > [...] > > On top of that, OK to push the attached > "GGC, GTY: No pointer walking for 'atomic' in PCH 'gt_pch_note_object'"? > Appreciate review from a GGC, GTY-savvy person.
OK. Thanks for the detailed explanations, that helps even a not GGC/GTY savy person to review this ;) Thanks, Richard. > This depends on > <https://inbox.sourceware.org/87edlmtjwh....@euler.schwinge.homeip.net> > "GGC, GTY: Tighten up a few things re 'reorder' option and strings". > > > Grüße > Thomas > > > ----------------- > Siemens Electronic Design Automation GmbH; Anschrift: Arnulfstraße 201, 80634 > München; Gesellschaft mit beschränkter Haftung; Geschäftsführer: Thomas > Heurung, Frank Thürauf; Sitz der Gesellschaft: München; Registergericht > München, HRB 106955
