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Update src/doc/unstable-book/src/library-features/asm.md

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Co-authored-by: Amanieu d'Antras <amanieu@gmail.com>
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Michal Sudwoj 2020-05-23 03:55:34 +02:00 committed by Michal Sudwoj
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src/doc/unstable-book/src/library-features/asm.md
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@ -478,7 +478,7 @@ Here is the list of currently supported register classes:
>
> Note #2: On x86-64 the high byte registers (e.g. `ah`) are only available when used as an explicit register. Specifying the `reg_byte` register class for an operand will always allocate a low byte register.
>
> Note #3: On NVPTX, register names are not supported.
> Note #3: NVPTX doesn't have a fixed register set, so named registers are not supported.
Additional register classes may be added in the future based on demand (e.g. MMX, x87, etc).