[Bug target/111411] New: [14 regression] ICE when building opus-1.4 (celt_decoder.c:1182:1: internal compiler error: in extract_insn, at recog.cc:2791)

["sjames at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111411

            Bug ID: 111411
           Summary: [14 regression] ICE when building opus-1.4
                    (celt_decoder.c:1182:1: internal compiler error: in
                    extract_insn, at recog.cc:2791)
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sjames at gcc dot gnu.org
  Target Milestone: ---

Created attachment 55896
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55896&action=edit
celt_decoder.c.i

```
gcc (Gentoo 14.0.0 p, commit d0b55776a4e1d2f293db5ba0e4a04aefed055ec4) 14.0.0
20230913 (experimental) 3af2af15798cb6243e2643f98f62c9270b1ca5d2
Copyright (C) 2023 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
```

```
FAILED: celt/libopus-celt.a.p/celt_decoder.c.o
aarch64-unknown-linux-gnu-gcc -Icelt/libopus-celt.a.p -Icelt -I../opus-1.4/celt
-I. -I../opus-1.4 -Iinclude -I../opus-1.4/include -Isilk -I../opus-1.4/silk
-fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -W
all -Winvalid-pch -Wextra -std=gnu99 -DOPUS_BUILD -DHAVE_CONFIG_H
-fvisibility=hidden -Wcast-align -Wnested-externs -Wshadow -Wstrict-prototypes
-fstack-protector-strong -O3 -pipe -mcpu=native -fdiagnostics-c
olor=always -ggdb3 -fPIC -MD -MQ celt/libopus-celt.a.p/celt_decoder.c.o -MF
celt/libopus-celt.a.p/celt_decoder.c.o.d -o
celt/libopus-celt.a.p/celt_decoder.c.o -c ../opus-1.4/celt/celt_decoder.c
../opus-1.4/celt/celt_decoder.c: In function ‘celt_decode_with_ec’:
../opus-1.4/celt/celt_decoder.c:1182:1: error: unrecognizable insn:
 1182 | }
      | ^
(insn 5312 42 41 42 (parallel [
            (set (mem/c:SI (plus:DI (reg/f:DI 29 x29)
                        (const_int -260 [0xfffffffffffffefc])) [18 %sfp+-260 S4
A32])
                (const_int 0 [0]))
            (set (mem/c:SI (plus:DI (reg/f:DI 29 x29)
                        (const_int -256 [0xffffffffffffff00])) [18 %sfp+-256 S4
A32])
                (const_int 0 [0]))
        ]) "../opus-1.4/celt/celt_decoder.c":978:22 -1
     (nil))
during RTL pass: cprop_hardreg
../opus-1.4/celt/celt_decoder.c:1182:1: internal compiler error: in
extract_insn, at recog.cc:2791
0xaaaae5b09473 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
       
/usr/src/debug/sys-devel/gcc-14.0.0.9999/gcc-14.0.0.9999/gcc/rtl-error.cc:108
0xaaaae5b0951b _fatal_insn_not_found(rtx_def const*, char const*, int, char
const*)
       
/usr/src/debug/sys-devel/gcc-14.0.0.9999/gcc-14.0.0.9999/gcc/rtl-error.cc:116
0xaaaae626d693 extract_insn(rtx_insn*)
       
/usr/src/debug/sys-devel/gcc-14.0.0.9999/gcc-14.0.0.9999/gcc/recog.cc:2791
0xaaaae6273fb3 extract_constrain_insn(rtx_insn*)
       
/usr/src/debug/sys-devel/gcc-14.0.0.9999/gcc-14.0.0.9999/gcc/recog.cc:2690
0xaaaae6278d5b copyprop_hardreg_forward_1
       
/usr/src/debug/sys-devel/gcc-14.0.0.9999/gcc-14.0.0.9999/gcc/regcprop.cc:836
0xaaaae627a7e3 execute
       
/usr/src/debug/sys-devel/gcc-14.0.0.9999/gcc-14.0.0.9999/gcc/regcprop.cc:1423
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://bugs.gentoo.org/> for instructions.
```

gcc -c celt_decoder.c.i -O3 is enough to repro.