[Bug target/118270] New: [15 Regression] Many AVX10.2 test failures

[hjl.tools at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118270

            Bug ID: 118270
           Summary: [15 Regression] Many AVX10.2 test failures
           Product: gcc
           Version: 15.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com
                CC: haochen.jiang at intel dot com
  Target Milestone: ---
            Target: x86-64

On x86-64 with binutils

commit 2b001c799977a97304311df238fe33daa9b8fa7f
Author: GDB Administrator <gdbad...@sourceware.org>
Date:   Mon Dec 30 00:00:19 2024 +0000

    Automatic date update in version.in

r15-6478-g9b1d30e83ebd7a gave

FAIL: gcc.dg/field-merge-16.c scan-tree-dump-times ifcombine "optimizing" 6
FAIL: gcc.target/i386/avx10_2-512-vcvttnebf162ibs-2.c (test for excess errors)
FAIL: gcc.target/i386/avx10_2-512-vcvttnebf162ibs-2.c (test for excess errors)
FAIL: gcc.target/i386/avx10_2-512-vcvttnebf162iubs-2.c (test for excess errors)
FAIL: gcc.target/i386/avx10_2-512-vcvttnebf162iubs-2.c (test for excess errors)
FAIL: gcc.target/i386/avx10_2-512-vminmaxnepbf16-2.c (test for excess errors)
FAIL: gcc.target/i386/avx10_2-512-vminmaxnepbf16-2.c (test for excess errors)
FAIL: gcc.target/i386/avx10_2-512-vscalefpbf16-2.c (test for excess errors)
FAIL: gcc.target/i386/avx10_2-512-vscalefpbf16-2.c (test for excess errors)
FAIL: gcc.target/i386/avx10_2-vcvttnebf162ibs-2.c (test for excess errors)
FAIL: gcc.target/i386/avx10_2-vcvttnebf162ibs-2.c (test for excess errors)
FAIL: gcc.target/i386/avx10_2-vcvttnebf162iubs-2.c (test for excess errors)
FAIL: gcc.target/i386/avx10_2-vcvttnebf162iubs-2.c (test for excess errors)
FAIL: gcc.target/i386/avx10_2-vminmaxnepbf16-2.c (test for excess errors)
FAIL: gcc.target/i386/avx10_2-vminmaxnepbf16-2.c (test for excess errors)
FAIL: gcc.target/i386/avx10_2-vscalefpbf16-2.c (test for excess errors)
FAIL: gcc.target/i386/avx10_2-vscalefpbf16-2.c (test for excess errors)

I saw

Error: no such instruction: `tdpbf8ps %tmm1,%tmm2,%tmm3'
Error: no such instruction: `tileloaddrs (%r9),%tmm3'
Error: no such instruction: `tilemovrow %edx,%tmm2,%zmm1'
Error: no such instruction: `tmmultf32ps %tmm1,%tmm2,%tmm3'
Error: no such instruction: `ttransposed %tmm1,%tmm2'
Error: no such instruction: `vcvttnebf162ibs %xmm0,%xmm6'
...
Error: no such instruction: `vminmaxnepbf16 $5,%zmm1,%zmm0,%zmm2{%k1}{z}'
Error: no such instruction: `vscalefpbf16 %xmm1,%xmm0,%xmm2'
...