Re: [xstormy16 PATCH] Add support for byte and word swapping instructions.

On 4/25/23 14:20, Roger Sayle wrote: This patch adds support for xstormy16's swpb (swap bytes) and swpw (swap words) instructions. The most obvious application of these to implement the __builtin_bswap16 and __builtin_bswap32 intrinsics. Currently, __builtin_bswap16 is implemented as: foo:

[xstormy16 PATCH] Add support for byte and word swapping instructions.

This patch adds support for xstormy16's swpb (swap bytes) and swpw (swap words) instructions. The most obvious application of these to implement the __builtin_bswap16 and __builtin_bswap32 intrinsics. Currently, __builtin_bswap16 is implemented as: foo:mov r7,r2 shl r7,#8