[Bug target/101804] New: float_vector_all_ones_operand should be used more

[Bug target/101804] New: float_vector_all_ones_operand should be used more

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101804

            Bug ID: 101804
           Summary: float_vector_all_ones_operand should be used more
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com
                CC: crazylht at gmail dot com
  Target Milestone: ---
            Target: i386,x86-64

Created attachment 51270
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51270&action=edit
A patch

float_vector_all_ones_operand should be used more.

[Bug target/101804] float_vector_all_ones_operand should be used more

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101804

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #51270|0                           |1
        is obsolete|                            |

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 51271
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51271&action=edit
A patch

[Bug target/101804] float_vector_all_ones_operand should be used more

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101804

--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by H.J. Lu <hjl@gcc.gnu.org>:

https://gcc.gnu.org/g:3d7ccbc1efbd475031a9a4a6110c531f71fbf631

commit r12-2829-g3d7ccbc1efbd475031a9a4a6110c531f71fbf631
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Fri Aug 6 12:32:01 2021 -0700

    x86: Optimize load of const FP all bits set vectors

    Check float_vector_all_ones_operand for vector floating-point modes to
    optimize load of const floating-point all bits set vectors.

    gcc/

            PR target/101804
            * config/i386/constraints.md (BC): Document for integer SSE
            constant all bits set operand.
            (BF): New constraint for const floating-point all bits set
            vectors.
            * config/i386/i386.c (standard_sse_constant_p): Likewise.
            (standard_sse_constant_opcode): Likewise.
            * config/i386/sse.md (sseconstm1): New mode attribute.
            (mov<mode>_internal): Replace BC with <sseconstm1>.

    gcc/testsuite/

            PR target/101804
            * gcc.target/i386/avx2-gather-2.c: Pass -march=skylake instead
            of "-mavx2 -mtune=skylake".  Scan vpcmpeqd.

[Bug target/101804] float_vector_all_ones_operand should be used more

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101804

H.J. Lu <hjl.tools at gmail dot com> changed:

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

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed for GCC 12.

[Bug target/101804] float_vector_all_ones_operand should be used more

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101804

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |12.0