[Bug build/31782] New: Test build failure with recent GCC trunk (x86/tst-cpu-features-supports.c:69:3: error: parameter to builtin not valid: avx5124fmaps)

["sam at gentoo dot org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=31782

            Bug ID: 31782
           Summary: Test build failure with recent GCC trunk
                    (x86/tst-cpu-features-supports.c:69:3: error:
                    parameter to builtin not valid: avx5124fmaps)
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: build
          Assignee: unassigned at sourceware dot org
          Reporter: sam at gentoo dot org
                CC: carlos at redhat dot com
  Target Milestone: ---

This broke with a recent commit in GCC trunk:

commit e1a7e2c54d52d0ba374735e285b617af44841ace
Author: Haochen Jiang <haochen.jiang@intel.com>
Date:   Mon May 20 10:43:44 2024 +0800

    i386: Remove Xeon Phi ISA support

--

```
[...]
../sysdeps/x86/tst-cpu-features-supports.c: In function ‘do_test’:
../sysdeps/x86/tst-cpu-features-supports.c:69:3: error: parameter to builtin
not valid: avx5124fmaps
   69 |   fails += CHECK_FEATURE_ACTIVE (avx5124fmaps, AVX512_4FMAPS);
      |   ^~~~~
../sysdeps/x86/tst-cpu-features-supports.c:70:3: error: parameter to builtin
not valid: avx5124vnniw
   70 |   fails += CHECK_FEATURE_ACTIVE (avx5124vnniw, AVX512_4VNNIW);
      |   ^~~~~
../sysdeps/x86/tst-cpu-features-supports.c:95:3: error: parameter to builtin
not valid: avx512er
   95 |   fails += CHECK_FEATURE_ACTIVE (avx512er, AVX512ER);
      |   ^~~~~
../sysdeps/x86/tst-cpu-features-supports.c:102:3: error: parameter to builtin
not valid: avx512pf
  102 |   fails += CHECK_FEATURE_ACTIVE (avx512pf, AVX512PF);
      |   ^~~~~
../sysdeps/x86/tst-cpu-features-supports.c:151:3: error: parameter to builtin
not valid: prefetchwt1
  151 |   fails += CHECK_FEATURE_ACTIVE (prefetchwt1, PREFETCHWT1);
      |   ^~~~~
```

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