[Bug middle-end/100278] New: IBM Z: Segmentation fault when building valgrind with -march=z14

[Bug middle-end/100278] New: IBM Z: Segmentation fault when building valgrind with -march=z14

[iii at linux dot ibm.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100278

            Bug ID: 100278
           Summary: IBM Z: Segmentation fault when building valgrind with
                    -march=z14
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: iii at linux dot ibm.com
  Target Milestone: ---

Minimized test:

$ cat test.c
a() {
  register b asm("");
  if (b)
    b = 1;
  for (; b;)
    ;
}

$ $HOME/gcc/build/dist/bin/gcc -m64 -O2 -g -finline-functions
-fno-stack-protector -fno-builtin -fomit-frame-pointer -fstrict-aliasing
-march=z14 -c test.c
test.c:1:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
    1 | a() {
      | ^
test.c: In function ‘a’:
test.c:2:12: warning: type defaults to ‘int’ in declaration of ‘b’
[-Wimplicit-int]
    2 |   register b asm("");
      |            ^
during GIMPLE pass: pre
test.c:1:1: internal compiler error: Segmentation fault
    1 | a() {
      | ^
0x1a33499 crash_signal
        ../../gcc/toplev.c:327
0x11e9bf2 contains_struct_check(tree_node*, tree_node_structure_enum, char
const*, int, char const*)
        ../../gcc/tree.h:3466
0x1c57673 compute_avail
        ../../gcc/tree-ssa-pre.c:4163
0x1c580d9 execute
        ../../gcc/tree-ssa-pre.c:4370

Bisect points to:

commit 577d05fc914338cd7ddc254f3bee4532331f5c13
Author: Richard Biener <rguenther@suse.de>
Date:   Tue Mar 9 09:29:29 2021 +0100

    tree-optimization/99473 - more cselim

[Bug middle-end/100278] IBM Z: Segmentation fault when building valgrind with -march=z14

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100278

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2021-04-27
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |ASSIGNED
             Target|                            |s390x
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot gnu.org

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I will have a look.

[Bug middle-end/100278] IBM Z: Segmentation fault when building valgrind with -march=z14

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100278

--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:acfe5290406cc70485df8899d14982278a9371f8

commit r12-141-gacfe5290406cc70485df8899d14982278a9371f8
Author: Richard Biener <rguenther@suse.de>
Date:   Tue Apr 27 09:41:38 2021 +0200

    tree-optimization/100278 - handle mismatched code in TBAA adjust of PRE

    PRE has code to adjust TBAA behavior for refs that expects the base
    operation code to match.  The testcase shows a case where we have
    a VAR_DECL vs. a MEM_REF so add code to give up in such cases.

    2021-04-27  Richard Biener  <rguenther@suse.de>

            PR tree-optimization/100278
            * tree-ssa-pre.c (compute_avail): Give up when we cannot
            adjust TBAA beacuse of mismatching bases.

            * gcc.dg/tree-ssa/pr100278.c: New testcase.

[Bug middle-end/100278] IBM Z: Segmentation fault when building valgrind with -march=z14

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100278

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |12.0

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk sofar, the issue is latent so I'm probably going to backport.

[Bug middle-end/100278] IBM Z: Segmentation fault when building valgrind with -march=z14

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100278

--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:3ac56ea477ec72340ebbce44af93c7712b579109

commit r11-8352-g3ac56ea477ec72340ebbce44af93c7712b579109
Author: Richard Biener <rguenther@suse.de>
Date:   Tue Apr 27 09:41:38 2021 +0200

    tree-optimization/100278 - handle mismatched code in TBAA adjust of PRE

    PRE has code to adjust TBAA behavior for refs that expects the base
    operation code to match.  The testcase shows a case where we have
    a VAR_DECL vs. a MEM_REF so add code to give up in such cases.

    2021-04-27  Richard Biener  <rguenther@suse.de>

            PR tree-optimization/100278
            * tree-ssa-pre.c (compute_avail): Give up when we cannot
            adjust TBAA beacuse of mismatching bases.

            * gcc.dg/tree-ssa/pr100278.c: New testcase.

    (cherry picked from commit acfe5290406cc70485df8899d14982278a9371f8)

[Bug middle-end/100278] IBM Z: Segmentation fault when building valgrind with -march=z14

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100278

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:bd475d14d880f17f2491b9488ba776479934a47a

commit r10-9799-gbd475d14d880f17f2491b9488ba776479934a47a
Author: Richard Biener <rguenther@suse.de>
Date:   Tue Apr 27 09:41:38 2021 +0200

    tree-optimization/100278 - handle mismatched code in TBAA adjust of PRE

    PRE has code to adjust TBAA behavior for refs that expects the base
    operation code to match.  The testcase shows a case where we have
    a VAR_DECL vs. a MEM_REF so add code to give up in such cases.

    2021-04-27  Richard Biener  <rguenther@suse.de>

            PR tree-optimization/100278
            * tree-ssa-pre.c (compute_avail): Give up when we cannot
            adjust TBAA beacuse of mismatching bases.

            * gcc.dg/tree-ssa/pr100278.c: New testcase.

    (cherry picked from commit acfe5290406cc70485df8899d14982278a9371f8)

[Bug middle-end/100278] IBM Z: Segmentation fault when building valgrind with -march=z14

[iii at linux dot ibm.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100278

Ilya Leoshkevich <iii at linux dot ibm.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|ASSIGNED                    |RESOLVED

--- Comment #6 from Ilya Leoshkevich <iii at linux dot ibm.com> ---
Fixed, thanks!

[Bug middle-end/100278] IBM Z: Segmentation fault when building valgrind with -march=z14

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100278

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |10.4