[Bug target/94121] ICE on aarch64-linux-gnu: in abs_hwi, at hwint.h:324

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94121

--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
commit r10-7155-g7aa605c9d4643dc6e0a0460e5697c02457cd7278
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Fri Mar 13 11:33:16 2020 +0100

    aarch64: Fix another bug in aarch64_add_offset_1 [PR94121]

    > I'm getting this ICE with -mabi=ilp32:
    >
    > during RTL pass: fwprop1
    > /opt/gcc/gcc-20200312/gcc/testsuite/gcc.dg/pr94121.c: In function 'bar':
    > /opt/gcc/gcc-20200312/gcc/testsuite/gcc.dg/pr94121.c:16:1: internal
compiler error: in decompose, at rtl.h:2279

    That is a preexisting issue, caused by another bug in the same function.
    When mode is SImode and moffset is 0x80000000 (or anything else with the
    bit 31 set), we need to sign-extend it.

    2020-03-13  Jakub Jelinek  <jakub@redhat.com>

            PR target/94121
            * config/aarch64/aarch64.c (aarch64_add_offset_1): Use gen_int_mode
            instead of GEN_INT.