How can I write rax register to a quadword element of AVX512 register zmm26?

Asked Jan 23 '19 at 15:04

Active Jan 23 '19 at 15:04

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This question is the inverse of How can I write a QuadWord from AVX512 register zmm26 to the rax register?. In addition I have the requirement of not going to memory for intermediate storage. Is that possible? I want to be able to individually write each quadword element of zmm15-zmm31.

asked Jan 23 '19 at 15:04

budchan chao

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The question you linked contains your answer right in the question! `vpbroadcastq zmm26{k5}{z},rax` Use merge-masking instead of zero-masking, like `vpbroadcastq zmm26{k5}, rax`, if you want to merge into an existing register. – Peter Cordes Jan 23 '19 at 17:00

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