[Bug target/96558] [11 Regression] ICE in extract_constrain_insn, at recog.c:2195 (error: insn does not satisfy its constraints)

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96558

--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Roger Sayle <sa...@gcc.gnu.org>:

https://gcc.gnu.org/g:32c69a56981bd72a52b7d234a2936020f97909d1

commit r11-2679-g32c69a56981bd72a52b7d234a2936020f97909d1
Author: Roger Sayle <ro...@nextmovesoftware.com>
Date:   Wed Aug 12 22:34:29 2020 +0100

    PR target/96558: Only call ix86_expand_clear with GENERAL_REGS.

    The following patch tightens the predicates of the peephole2 from my recent
    "Integer min/max improvements patch" to only hoist clearing a register when
    that register is a general register.  Calling ix86_expand_clear with regs
    other than GENERAL_REGS is not supported.

    2020-08-12  Roger Sayle  <ro...@nextmovesoftware.com>
                Uroš Bizjak  <ubiz...@gmail.com>

    gcc/ChangeLog
            PR target/96558
            * config/i386/i386.md (peephole2): Only reorder register clearing
            instructions to allow use of xor for general registers.

    gcc/testsuite/ChangeLog
            PR target/96558
            * gcc.dg/pr96558.c: New test.