[Bug target/127004] [17 Regression] Recent changes to lower long-multipy chagnes to inline regress on avr-elf

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127004

Drea Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2026-08-22
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1

--- Comment #1 from Drea Pinski <pinskia at gcc dot gnu.org> ---
The ICE for reference:
```
t.c: In function ‘f’:
t.c:7:1: error: incomplete application of insn
    7 | }
      | ^
(insn 151 0 152 (parallel [
            (set (reg:QI 22 r22)
                (const_int 0 [0]))
            (clobber (reg:CC 36 cc))
        ]) 116 {movqi_insn}
     (nil))
during RTL pass: avr-fuse-move
t.c:7:1: internal compiler error: in emit_sequence, at
config/avr/avr-passes.cc:1191
0x26bed8c internal_error(char const*, ...)
        ../../gcc/diagnostic-global-context.cc:787
0x26cd831 fancy_abort(char const*, int, char const*)
        ../../gcc/diagnostics/context.cc:1813
0xbdc743 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
        ../../gcc/rtl-error.cc:108
0x1ac909c emit_sequence
        ../../gcc/config/avr/avr-passes.cc:1191
0x1ad04ab optimize_one_block
        ../../gcc/config/avr/avr-passes.cc:3207
0x1ad082f optimize_one_function
        ../../gcc/config/avr/avr-passes.cc:3275
0x1ac9233 execute
        ../../gcc/config/avr/avr-passes.cc:1244
./cc1 t.c -quiet -std=gnu89 -w -O2
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

```