[PATCH] libstdc++: Correct NTTP and simd_mask ctor call

[Alexandre Oliva]

On Jun  2, 2023, Matthias Kretz <m.kretz@gsi.de> wrote:

> I'm looking at that function again, also in light of recent improvements wrt. 
> code-gen, and will remove that assumption, that long long is vectorizable.

Thanks, I'll leave that to you, then.


I also noticed the same test is failing on rtems6 (at least with gcc
11).  AFAICT the problem is that _GLIBCXX_SIMD_MATH_CALL* macros in
simd_math.h expect the named functions to be in std::, but I get such
errors as:

.../aarch64-rtems6/include/c++/11.4.1/experimental/bits/simd_math.h:1299: error: 'remainder' is not a member of 'std'
.../aarch64-rtems6/include/c++/11.4.1/experimental/bits/simd_math.h:1299: note: suggested alternatives:
[...]
.../aarch64-rtems6/include/math.h:346: note:   'remainder'
[...]
.../aarch64-rtems6/include/c++/11.4.1/experimental/bits/simd_math.h:1299: note:   'std::experimental::parallelism_v2::remainder'
.../aarch64-rtems6/include/c++/11.4.1/experimental/bits/simd_math.h:1299: error: template argument 1 is invalid
[...]
.../aarch64-rtems6/include/c++/11.4.1/experimental/bits/simd_math.h:1328: error: 'fmin' is not a member of 'std'; did you mean 'min'?
.../aarch64-rtems6/include/c++/11.4.1/experimental/bits/simd_math.h:1328: error: 'fmin' is not a member of 'std'; did you mean 'min'?
.../aarch64-rtems6/include/c++/11.4.1/experimental/bits/simd_math.h:1328: error: template argument 1 is invalid

ISTM that rtems is missing some of the math.h functions expected by
libstdc++, but also that even those that are present are not visible in
namespace ::std::, where the macros reasonably expect to find them.  Is
this known?  Should I file a PR about it?

-- 
Alexandre Oliva, happy hacker                https://FSFLA.org/blogs/lxo/
   Free Software Activist                       GNU Toolchain Engineer
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