Support clang - Githubissues

lu-zero / libvpx

Local libvpx changes (POWER8 Altivec/VSX support)

BSD 3-Clause "New" or "Revised" License

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Support clang #18

Closed lu-zero closed 6 years ago

lu-zero commented 7 years ago

Clang is not behaving like gcc and seems lacking some instructions:

[x] Add the clang support in configure (e.g. add -maltivec)
[x] Write the function replacements and use them only for clang
[x] Benchmark and test on clang as well.

lu-zero commented 7 years ago

Clang managed to issue a warning for ptrdiff_t usage in vec_vsx_ld and vec_vsx_st, beside that seems working fine, the workaround for vec_xxpermdi is slow as expected.

lu-zero commented 6 years ago

The current clang seems to work decently.