[FFmpeg-devel] gcc: Remove auto-vectorization limitation.

[Jiawei]

> Here is a particularly bad example of autovectorisation across many
> compilers:
>
> https://gcc.godbolt.org/z/rjEqzf1hh
>
> Kieran

Admittedly, in some cases, enabling vectorization is not the optimal 
solution.

But the question is the limitation is only added on gcc side.For LLVM 
clang, there are no same restrict.


And force add the limitation in configure side will change the user's 
original purpose, if user want to

enable the vectorization when using gcc, it will have vectorization 
turned off without knowing it.

After a long and careful inspection, user may finally find that the 
configure configuration has forced

this feature to be turned off, and they still need to remove this 
restriction manually.


BR,

Jiawei

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