[Bug target/81534] [7/8 Regression] ICE in in extract_insn, at recog.c:2311 (unrecognizable insn)

[krebbel at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81534

--- Comment #2 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
Author: krebbel
Date: Thu Jul 27 10:42:22 2017
New Revision: 250618

URL: https://gcc.gnu.org/viewcvs?rev=250618&root=gcc&view=rev
Log:
S/390: Fix PR81534

The HI/QI atomic_fetch_<atomic><mode>" expander accepted symbolic
references and emitted CAS patterns whose insn predicates rejected them.

Fixed by allowing symbolic references there as well.  Reload will get
rid of them due to the constraint letter.

Regression tested on s390x.

gcc/ChangeLog:

2017-07-27  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

        Backport from mainline
        2017-07-27  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

        PR target/81534
        * config/s390/s390.md ("*atomic_compare_and_swap<mode>_1")
        ("*atomic_compare_and_swapdi_2", "*atomic_compare_and_swapsi_3"):
        Change s_operand to memory_operand.

gcc/testsuite/ChangeLog:

2017-07-27  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

        Backport from mainline
        2017-07-27  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

        PR target/81534
        * gcc.target/s390/pr81534.c: New test.


Added:
    branches/gcc-7-branch/gcc/testsuite/gcc.target/s390/pr81534.c
Modified:
    branches/gcc-7-branch/gcc/ChangeLog
    branches/gcc-7-branch/gcc/config/s390/s390.md
    branches/gcc-7-branch/gcc/testsuite/ChangeLog