[Bug target/98177] [11 Regression] SVE: ICE in expand_direct_optab_fn, at internal-fn.c:3368

2021-01-04 Thread wirkus at gcc dot gnu.org via Gcc-bugs 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98177

Przemyslaw Wirkus  changed:

   What|Removed |Added

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

--- Comment #3 from Przemyslaw Wirkus  ---
I can confirm it's fixed. Confirmed with GCC built (aarch64-elf) with
0696141107d61483f38482b941549959a0d7f613 trunk (30 Dec '20).

[Bug target/98177] [11 Regression] SVE: ICE in expand_direct_optab_fn, at internal-fn.c:3368

2020-12-18 Thread cvs-commit at gcc dot gnu.org via Gcc-bugs 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98177

--- Comment #2 from CVS Commits  ---
The master branch has been updated by Przemyslaw Wirkus :

https://gcc.gnu.org/g:d44d47b49267b4265cee16d25b3f89dbf967cc0c

commit r11-6262-gd44d47b49267b4265cee16d25b3f89dbf967cc0c
Author: Przemyslaw Wirkus 
Date:   Fri Dec 18 18:18:57 2020 +

aarch64: SVE: ICE in expand_direct_optab_fn [PR98177]

Problem comes from using the wrong interface to get the index type for a
COND_REDUCTION. For fixed-length SVE we get a V2SI (a 64-bit Advanced
SIMD vector) instead of a VNx2SI (an SVE vector that stores SI elements
in DI containers).

Credits to Richard Sandiford for pointing out the issue's root cause.

Original PR snippet proposed to reproduce issue was only causing ICE for
C++
compiler (see pr98177-1 test cases). I've slightly modified original
snippet in order to reproduce issue on both C and C++ compilers. These
are pr98177-2 test cases.

gcc/ChangeLog:

PR target/98177
* tree-vect-loop.c (vect_create_epilog_for_reduction): Use
get_same_sized_vectype to obtain index type.
(vectorizable_reduction): Likewise.

gcc/testsuite/ChangeLog:

PR target/98177
* g++.target/aarch64/sve/pr98177-1.C: New test.
* g++.target/aarch64/sve/pr98177-2.C: New test.
* gcc.target/aarch64/sve/pr98177-1.c: New test.
* gcc.target/aarch64/sve/pr98177-2.c: New test.

[Bug target/98177] [11 Regression] SVE: ICE in expand_direct_optab_fn, at internal-fn.c:3368

2020-12-07 Thread rguenth at gcc dot gnu.org via Gcc-bugs 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98177

Richard Biener  changed:

   What|Removed |Added

   Priority|P3  |P1

[Bug target/98177] [11 Regression] SVE: ICE in expand_direct_optab_fn, at internal-fn.c:3368

2020-12-07 Thread ktkachov at gcc dot gnu.org via Gcc-bugs 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98177

ktkachov at gcc dot gnu.org changed:

   What|Removed |Added

   Last reconfirmed||2020-12-07
 Ever confirmed|0   |1
 Status|UNCONFIRMED |NEW
 CC||ktkachov at gcc dot gnu.org

--- Comment #1 from ktkachov at gcc dot gnu.org ---
Confirmed.

[Bug target/98177] [11 Regression] SVE: ICE in expand_direct_optab_fn, at internal-fn.c:3368

2020-12-07 Thread acoplan at gcc dot gnu.org via Gcc-bugs 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98177

Alex Coplan  changed:

   What|Removed |Added

 CC||rsandifo at gcc dot gnu.org
 Target||aarch64
   Target Milestone|--- |11.0
  Known to fail||11.0
   Keywords||ice-on-valid-code