[METAL] Fix int8 vectorized cast #14962
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Current codegen output `(half4)*(device uint*)A` tries to create a `int32` number and then cast it to `half4`, which is not the expected behavior. As Metal supports `uchar4` and `char4` types, we can direct use them to solve that problem.
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tqchen
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May 26, 2023
tqchen
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May 29, 2023
) Current codegen output `(half4)*(device uint*)A` tries to create a `int32` number and then cast it to `half4`, which is not the expected behavior. As Metal supports `uchar4` and `char4` types, we can direct use them to solve that problem. (cherry picked from commit 6198c7f)
mei-ye
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Jun 1, 2023
Current codegen output `(half4)*(device uint*)A` tries to create a `int32` number and then cast it to `half4`, which is not the expected behavior. As Metal supports `uchar4` and `char4` types, we can direct use them to solve that problem.
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Current codegen output
(half4)*(device uint*)Atries to create aint32number and then cast it tohalf4, which is not the expected behavior.As Metal natively supports
uchar4andchar4types (ref), we can direct use them to solve that problem.cc @tqchen