[Bug target/112930] New: gcc.target/aarch64/sme/call_sm_switch_7.c ICEs on aarch64_be

[Bug target/112930] New: gcc.target/aarch64/sme/call_sm_switch_7.c ICEs on aarch64_be

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112930

            Bug ID: 112930
           Summary: gcc.target/aarch64/sme/call_sm_switch_7.c ICEs on
                    aarch64_be
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
                CC: rsandifo at gcc dot gnu.org
  Target Milestone: ---
            Target: aarch64_be-linux-gnu

spawn -ignore SIGHUP
/bajas/pinskia/src/upstream-full-cross/gcc/objdir-stage2/gcc/xgcc
-B/bajas/pinskia/src/upstream-full-cross/gcc/objdir-stage2/gcc/
/home/apinski/src/upstream-full-cross/gcc/gcc/testsuite/gcc.target/aarch64/sme/call_sm_switch_7.c
-fdiagnostics-plain-output -O -fomit-frame-pointer -fno-optimize-sibling-calls
-march=armv9-a+sme -mtune=generic -moverride=tune=none -S -o
call_sm_switch_7.s^M
/home/apinski/src/upstream-full-cross/gcc/gcc/testsuite/gcc.target/aarch64/sme/call_sm_switch_7.c:
In function 'test_mixed':^M
/home/apinski/src/upstream-full-cross/gcc/gcc/testsuite/gcc.target/aarch64/sme/call_sm_switch_7.c:475:1:
error: unrecognizable insn:^M
(insn 64 63 65 (set (mem:VNx4SF (plus:DI (reg/f:DI 31 sp)^M
                (const_poly_int:DI [16, 16])) [0  S[16, 16] A8])^M
        (reg:VNx4SF 35 v3))
"/home/apinski/src/upstream-full-cross/gcc/gcc/testsuite/gcc.target/aarch64/sme/call_sm_switch_7.c":472:3
-1^M
     (nil))^M
during RTL pass: shorten^M
/home/apinski/src/upstream-full-cross/gcc/gcc/testsuite/gcc.target/aarch64/sme/call_sm_switch_7.c:475:1:
internal compiler error: in insn_min_length, at
config/aarch64/aarch64.md:8172^M
0x80401a _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)^M
        ../../gcc/rtl-error.cc:108^M
0x804036 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)^M
        ../../gcc/rtl-error.cc:116^M
0x8ed1d4 insn_min_length(rtx_insn*)^M
        ../../gcc/config/aarch64/aarch64.md:8172^M
0xc3e033 shorten_branches(rtx_insn*)^M
        ../../gcc/final.cc:1089^M
0xc3e11f rest_of_handle_shorten_branches^M
        ../../gcc/final.cc:4338^M
0xc3e11f execute^M
        ../../gcc/final.cc:4367^M
Please submit a full bug report, with preprocessed source (by using
-freport-bug).^M
Please include the complete backtrace with any bug report.^M
See <https://gcc.gnu.org/bugs/> for instructions.^M
compiler exited with status 1

[Bug target/112930] gcc.target/aarch64/sme/call_sm_switch_7.c ICEs on aarch64_be

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112930

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
gcc.target/aarch64/sme/locally_streaming_3.c fails the same way.

[Bug target/112930] gcc.target/aarch64/sme/call_sm_switch_7.c ICEs on aarch64_be

[rsandifo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112930

Richard Sandiford <rsandifo at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2023-12-09
             Status|UNCONFIRMED                 |ASSIGNED
     Ever confirmed|0                           |1
           Assignee|unassigned at gcc dot gnu.org      |rsandifo at gcc dot gnu.org

--- Comment #2 from Richard Sandiford <rsandifo at gcc dot gnu.org> ---
Testing a patch.

[Bug target/112930] gcc.target/aarch64/sme/call_sm_switch_7.c ICEs on aarch64_be

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112930

--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The trunk branch has been updated by Richard Sandiford <rsandifo@gcc.gnu.org>:

https://gcc.gnu.org/g:f5c8d6bc050a8a6120aff2be25b6892d91baac99

commit r14-6386-gf5c8d6bc050a8a6120aff2be25b6892d91baac99
Author: Richard Sandiford <richard.sandiford@arm.com>
Date:   Sun Dec 10 19:46:06 2023 +0000

    aarch64: Fix SMSTART/SMSTOP save/restore for BE

    VNx16QI (the SVE register byte mode) is the only SVE mode for which
    LD1 and LDR result in the same register layout for big-endian.  It is
    therefore the only mode for which we allow LDR and STR to be used for
    big-endian SVE moves.

    The SME support sometimes needs to use LDR and STR to save and restore
    Z register contents around an SMSTART/SMSTOP SM.  It therefore needs
    to use VNx16QI regardless of the type of value that is stored in the
    Z registers.

    gcc/
            PR target/112930
            * config/aarch64/aarch64.cc
(aarch64_sme_mode_switch_regs::add_reg):
            Force specific SVE modes for single registers as well as
structures.

[Bug target/112930] gcc.target/aarch64/sme/call_sm_switch_7.c ICEs on aarch64_be

[rsandifo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112930

Richard Sandiford <rsandifo at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from Richard Sandiford <rsandifo at gcc dot gnu.org> ---
Fixed.