[Bug target/84845] [8 Regression] ICE: in extract_insn, at recog.c:2304: unrecognizable insn at -O2 and above at aarch64

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84845

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Mar 20 10:59:26 2018
New Revision: 258678

URL: https://gcc.gnu.org/viewcvs?rev=258678&root=gcc&view=rev
Log:
        PR target/84845
        * config/aarch64/aarch64.md (*aarch64_reg_<mode>3_neg_mask2): Rename
        to ...
        (*aarch64_<optab>_reg_<mode>3_neg_mask2): ... this.  If pseudos can't
        be created, use lowpart_subreg of operands[0] rather than operands[0]
        itself.
        (*aarch64_reg_<mode>3_minus_mask): Rename to ...
        (*aarch64_ashl_reg_<mode>3_minus_mask): ... this.
        (*aarch64_<optab>_reg_di3_mask2): Use const_int_operand predicate
        and n constraint instead of aarch64_shift_imm_di and Usd.
        (*aarch64_reg_<optab>_minus<mode>3): Rename to ...
        (*aarch64_<optab>_reg_minus<mode>3): ... this.

        * gcc.c-torture/compile/pr84845.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/pr84845.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/aarch64/aarch64.md
    trunk/gcc/testsuite/ChangeLog