[Bug libffi/83636] New: libffi/mips/n32: don't .set mips4 for mips r6

[syq at debian dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83636

            Bug ID: 83636
           Summary: libffi/mips/n32: don't .set mips4 for mips r6
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libffi
          Assignee: unassigned at gcc dot gnu.org
          Reporter: syq at debian dot org
  Target Milestone: ---

https://github.com/libffi/libffi/pull/396

mips r6 drops some insn and changes encoding for some insn, so we cannot 
    .set mips4


 #ifdef __GNUC__
        .abicalls
  #endif
 +#if !defined(__mips_isa_rev) || (__mips_isa_rev < 6)
        .set mips4
 +#endif
        .text
        .align  2
        .globl  ffi_call_N32