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bytedelta: rely on __SSSE3__ macro rather that on architecture macros #586

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merged 1 commit into from
Feb 7, 2024

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t20100
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@t20100 t20100 commented Feb 7, 2024

This PR proposes to use the __SSSE3__ macros to probe SSSE3 availability rather than the architecture macros since this depends on the build options used. From what I have checked the bytedelta code uses only SSSE3 and SSE2 instructions.
For Visual Studio, __SSSE3__ is defined the same way as for __SSE2__ in:

https://github.com/Blosc/C-Blosc2/blob/f0183767d73073eb41bbf97bf56554c7a55c7dbf/include/blosc2/blosc2-common.h#L36-L43

Related to #546 and probably fixes it. From what I have tested, it fixes build issues with hdf5plugin.

#define __SSSE3__
#endif

#if defined(__SSSE3__)
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It assumes that SSE2 is available when SSSE3 is

@FrancescAlted
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LGTM. Indeed the Windows platform was not fully tested. Thanks @t20100 !

@FrancescAlted FrancescAlted merged commit 8c519b4 into Blosc:main Feb 7, 2024
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@t20100 t20100 deleted the fix-bytedelta-ssse3 branch February 7, 2024 12:16
t20100 added a commit to t20100/hdf5plugin that referenced this pull request Feb 7, 2024
t20100 added a commit to t20100/hdf5plugin that referenced this pull request Feb 7, 2024
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2 participants