[Bug tree-optimization/102720] [12 regression] gcc.dg/tree-ssa/ldist-strlen-1.c and ldist-strlen-2.c fail after r12-4324

2021-11-21 Thread hubicka at gcc dot gnu.org via Gcc-bugs 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102720

Jan Hubicka  changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution|--- |FIXED

--- Comment #13 from Jan Hubicka  ---
Fixed.

[Bug tree-optimization/102720] [12 regression] gcc.dg/tree-ssa/ldist-strlen-1.c and ldist-strlen-2.c fail after r12-4324

2021-10-16 Thread cvs-commit at gcc dot gnu.org via Gcc-bugs 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102720

--- Comment #12 from CVS Commits  ---
The master branch has been updated by Jan Hubicka :

https://gcc.gnu.org/g:99b287b8ef51a0be52f7400879a619dc5f993f31

commit r12-4457-g99b287b8ef51a0be52f7400879a619dc5f993f31
Author: Jan Hubicka 
Date:   Sat Oct 16 14:45:06 2021 +0200

Fix wrong code in ldost-strlen-1.c

gcc/ChangeLog:

PR tree-optimization/102720
* tree-ssa-structalias.c (compute_points_to_sets): Fix producing
of call used and clobbered sets.

[Bug tree-optimization/102720] [12 regression] gcc.dg/tree-ssa/ldist-strlen-1.c and ldist-strlen-2.c fail after r12-4324

2021-10-13 Thread clyon at gcc dot gnu.org via Gcc-bugs 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102720

--- Comment #6 from Christophe Lyon  ---
On aarch64, this also causes gcc.dg/loop-unswitch-4.c to fail

[Bug tree-optimization/102720] [12 regression] gcc.dg/tree-ssa/ldist-strlen-1.c and ldist-strlen-2.c fail after r12-4324

2021-10-13 Thread clyon at gcc dot gnu.org via Gcc-bugs 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102720

Christophe Lyon  changed:

   What|Removed |Added

 CC||clyon at gcc dot gnu.org
 Target|powerpc64-linux-gnu,|powerpc64-linux-gnu,
   |powerpc64le-linux-gnu,  |powerpc64le-linux-gnu,
   |x86_64-linux-gnu|x86_64-linux-gnu, arm,
   ||aarch64

--- Comment #5 from Christophe Lyon  ---
Seen on arm and aarch64 too

[Bug tree-optimization/102720] [12 regression] gcc.dg/tree-ssa/ldist-strlen-1.c and ldist-strlen-2.c fail after r12-4324

2021-10-13 Thread stefansf at linux dot ibm.com via Gcc-bugs 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102720

Stefan Schulze Frielinghaus  changed:

   What|Removed |Added

 CC||stefansf at linux dot ibm.com

--- Comment #4 from Stefan Schulze Frielinghaus  
---
typedef __SIZE_TYPE__ size_t;
extern void* malloc (size_t);
extern void* memset (void*, int, size_t);

__attribute__((noinline))
int test (char *s)
{
  int i;
  for (i=0; s[i]; ++i);
  return i;
}

int main (void)
{
  char *p = malloc (1024);
  memset (p, 0xf, 1024); // removed
  p[1] = 0;  // removed
  int i = test (p);
  if (i != 1)
__builtin_abort ();
  return 0;
}

$ gcc -O2 -fdump-tree-dse2-details test.c

In dse2 we then have:

Deleted dead store: MEM[(char *)p_3 + 1B] = 0;
Deleted dead call: memset (p_3, 15, 1024);

prior g:008e7397dad971c03c08fc1b0a4a98fddccaaed8 the store and call is not
removed.

[Bug tree-optimization/102720] [12 regression] gcc.dg/tree-ssa/ldist-strlen-1.c and ldist-strlen-2.c fail after r12-4324

2021-10-13 Thread rguenth at gcc dot gnu.org via Gcc-bugs 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102720

Richard Biener  changed:

   What|Removed |Added

  Component|testsuite   |tree-optimization
Summary|[12 regression] |[12 regression]
   |gcc.dg/tree-ssa/ldist-strle |gcc.dg/tree-ssa/ldist-strle
   |n-1.c and ldist-strlen-2.c  |n-1.c and ldist-strlen-2.c
   |fail after r12-4234 |fail after r12-4324

--- Comment #3 from Richard Biener  ---
Ah, the summary is just wrong...