489b58b797
The special case for Clang in the trait producing a signed integer type lead to the trait returning 'char' where it should have been 'signed char'. This workaround was introduced because on Clang the return type of vector compares was not convertible to '_SimdWrapper< __int_for_sizeof_t<...' unless '__int_for_sizeof_t<char>' was an alias for 'char'. In order to not rewrite the complete mask type code (there is code scattered around the implementation assuming signed integers), this needs to be 'signed char'; so the special case for Clang needs to be removed. The conversion issue is now solved in _SimdWrapper, which now additionally allows conversion from vector types with compatible integral type. Signed-off-by: Matthias Kretz <m.kretz@gsi.de> libstdc++-v3/ChangeLog: PR libstdc++/115308 * include/experimental/bits/simd.h (__int_for_sizeof): Remove special cases for __clang__. (_SimdWrapper): Change constructor overload set to allow conversion from vector types with integral conversions via bit reinterpretation. (cherry picked from commit 8e36cf4c5c9140915d0019999db132a900b48037) |
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file: libstdc++-v3/README New users may wish to point their web browsers to the file index.html in the 'doc/html' subdirectory. It contains brief building instructions and notes on how to configure the library in interesting ways.