[PATCH] D39077: [X86] Teach the assembly parser to warn on duplicate registers in gather instructions.

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

Should we test for cases where the index register is a different size to the mask/result? Like _mm256_i32gather_epi64?


https://reviews.llvm.org/D39077