Use raw pointer casts for slice, str's .as_ptr() #31999
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We can now use raw pointer casts `*const [T] as *const T` and `*const str as *const u8` instead of .repr() for getting the pointer out of a slice.
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(rust_highfive has picked a reviewer for you, use r? to override) |
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This should be a good idea, using simpler code should improve compile time (however slightly). We don't have to call It looks like it generates exactly the same code in the end. https://gist.github.com/bluss/085ae73a253b9cc82788 ndarray's benchmarks stay the same, so it didn't seem to affect any slice loop optimizations that I could see. |
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This is great IMO! @bors r+ |
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📌 Commit 63c4065 has been approved by |
Use raw pointer casts for slice, str's .as_ptr() We can now use raw pointer casts `*const [T] as *const T` and `*const str as *const u8` instead of .repr() for getting the pointer out of a slice.
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I understand from context (and by assuming this code is correct) what |
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It is documented in this RFC https://github.com/rust-lang/rfcs/blob/master/text/0401-coercions.md#casts Also discussed in rust-lang/rfcs/pull/1052 |
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Use raw pointer casts for slice, str's .as_ptr()
We can now use raw pointer casts
*const [T] as *const Tand*const str as *const u8instead of .repr() for getting thepointer out of a slice.