On Fri, 5 Mar 2021, Vladimir Makarov via Gcc-patches wrote:
>   The following patch fixes
> 
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99378
> 
>   The patch was successfully bootstrapped and tested on x86-64.

Is it possible this breaks bootstrap on i586?

See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99438

  .../libgcc/soft-fp/divtf3.c: In function '__divtf3':
  .../libgcc/soft-fp/divtf3.c:51:1: error: unrecognizable insn:
   51 | }
      | ^
(insn 1185 3357 3676 80 (parallel [
            (set (reg:SI 5 di [621])
                (asm_operands:SI ("sub{l} {%11,%3|%3,%11}
        sbb{l} {%9,%2|%2,%9}
        sbb{l} {%7,%1|%1,%7}
        sbb{l} {%5,%0|%0,%5}") ("=r") 0 [
                        (reg:SI 5 di [621])
                        (mem/c:SI (plus:SI (reg/f:SI 6 bp)
                                (const_int -80 [0xffffffffffffffb0])) [5 
A_f[2]+0 S4 A64])
                        (reg:SI 1 dx [622])
                        (mem/c:SI (plus:SI (reg/f:SI 6 bp)
                                (const_int -84 [0xffffffffffffffac])) [5 
A_f[1]+0 S4 A32])
                        (reg:SI 0 ax [623])
                        (mem/c:SI (plus:SI (reg/f:SI 6 bp)

Gerald

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