[Bug target/121455] New: darwin_mergeable_constant_section and machopic_select_rtx_section should be improved to support non aligned objects

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121455

            Bug ID: 121455
           Summary: darwin_mergeable_constant_section and
                    machopic_select_rtx_section should be improved to
                    support non aligned objects
           Product: gcc
           Version: 14.2.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---
            Target: *-*-darwin

Similarly to how elf mergeable section support is being improved, macho/darwin
could be done similarly.

That is non-aligned objects could be placed in the __TEXT,__literalN sections
(where N is 4, 8, and 16).

I will attach a patch to test in a little bit; it will depend on patches for PR
121444, and PR 121394 since those also fix the middle-ends parts for mergeable
objects.