[Bug target/102907] New: aarch64/shrn-combine-[123].c fail with SVE

[Bug target/102907] New: aarch64/shrn-combine-[123].c fail with SVE

[clyon at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102907

            Bug ID: 102907
           Summary: aarch64/shrn-combine-[123].c fail with SVE
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: clyon at gcc dot gnu.org
  Target Milestone: ---

Hi Tamar,
I have noticed that the new tests shrn-combine-[123].c fail when running the
tests with -march=armv8.3-a+sve:
PASS: gcc.target/aarch64/shrn-combine-1.c (test for excess errors)
gcc.target/aarch64/shrn-combine-1.c: \\tshrn\\t found 0 times
FAIL: gcc.target/aarch64/shrn-combine-1.c scan-assembler-times \\tshrn\\t 1
gcc.target/aarch64/shrn-combine-1.c: \\tshrn2\\t found 0 times
FAIL: gcc.target/aarch64/shrn-combine-1.c scan-assembler-times \\tshrn2\\t 1

PASS: gcc.target/aarch64/shrn-combine-2.c (test for excess errors)
gcc.target/aarch64/shrn-combine-2.c: \\tshrn\\t found 0 times
FAIL: gcc.target/aarch64/shrn-combine-2.c scan-assembler-times \\tshrn\\t 1
gcc.target/aarch64/shrn-combine-2.c: \\tshrn2\\t found 0 times
FAIL: gcc.target/aarch64/shrn-combine-2.c scan-assembler-times \\tshrn2\\t 1

PASS: gcc.target/aarch64/shrn-combine-3.c (test for excess errors)
gcc.target/aarch64/shrn-combine-3.c: \\tshrn\\t found 0 times
FAIL: gcc.target/aarch64/shrn-combine-3.c scan-assembler-times \\tshrn\\t 1
gcc.target/aarch64/shrn-combine-3.c: \\tshrn2\\t found 0 times
FAIL: gcc.target/aarch64/shrn-combine-3.c scan-assembler-times \\tshrn2\\t 1

(and similarly with -march=armv8.5-a+sve2)

I haven't checked the actual generated code.

[Bug target/102907] aarch64/shrn-combine-[123].c fail with SVE

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102907

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2021-10-22
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
           See Also|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=93619,
                   |                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=77635

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The whole testsuite is broken when using either -mcpu=* or -march=* (or
defaulting with --with-cpu= or --with-arch=).

Confirmed.

[Bug target/102907] aarch64/shrn-combine-[123].c fail with SVE

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102907

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

https://gcc.gnu.org/g:2cbfaba60661ebbdfcffe725ab55fbb323e2a187

commit r12-4663-g2cbfaba60661ebbdfcffe725ab55fbb323e2a187
Author: Tamar Christina <tamar.christina@arm.com>
Date:   Mon Oct 25 15:14:04 2021 +0100

    AArch64 testsuite: Force shrn-combine-*.c to use NEON.

    These tests are testing Advanced SIMD codegen, so if the compiler or the
    testsuite is forcing SVE they will fail.

    This adds +nosve so that we always generate Advanced SIMD codegen.

    gcc/testsuite/ChangeLog:

            PR target/102907
            * gcc.target/aarch64/shrn-combine-1.c: Disable SVE.
            * gcc.target/aarch64/shrn-combine-2.c: Likewise.
            * gcc.target/aarch64/shrn-combine-3.c: Likewise.
            * gcc.target/aarch64/shrn-combine-4.c: Likewise.
            * gcc.target/aarch64/shrn-combine-5.c: Likewise.
            * gcc.target/aarch64/shrn-combine-6.c: Likewise.
            * gcc.target/aarch64/shrn-combine-7.c: Likewise.

[Bug target/102907] aarch64/shrn-combine-[123].c fail with SVE

[tnfchris at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102907

Tamar Christina <tnfchris at gcc dot gnu.org> changed:

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

--- Comment #3 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Fixed in trunk, thanks for the report!