[Bug inline-asm/84941] [6/7 Regression] internal compiler error: in reg_overlap_mentioned_p, at rtlanal.c:1870 (reg_overlap_mentioned_p()/match_asm_constraints_1())

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84941

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Jun 22 20:56:25 2018
New Revision: 261936

URL: https://gcc.gnu.org/viewcvs?rev=261936&root=gcc&view=rev
Log:
        Backported from mainline
        2018-03-22  Jakub Jelinek  <ja...@redhat.com>

        PR inline-asm/84941
        * function.c (match_asm_constraints_1): Don't do the optimization
        if input isn't a REG, SUBREG, MEM or constant.

        * gcc.dg/pr84941.c: New test.

Added:
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/pr84941.c
Modified:
    branches/gcc-7-branch/gcc/ChangeLog
    branches/gcc-7-branch/gcc/function.c
    branches/gcc-7-branch/gcc/testsuite/ChangeLog