[PATCH] D143880: [LoongArch] Emit bytepick for picking from concatenation of two values

[WÁNG Xuěruì via Phabricator via llvm-commits]

xen0n added a comment.

@xry111: BTW your GCC implementation of this pattern looks for *arithmetic* right shifts; do you mean logical instead? Because obviously the higher bits would be full of ones after shifting if `rj` happen to have its MSB set. The sign extension shall happen *after* the pick.


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  https://reviews.llvm.org/D143880/new/

https://reviews.llvm.org/D143880