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...all > sequence involves a chain. One of the AMDGPU fdiv expansions also > introduces a side effecting mode switch with a chain > > -Matt > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20200716/8fb7fe99/attachment.html>

Re: Do they really need to be chained with each other or anything else Yes. For 2 reasons. Our architecture lowers udivmem into something with 1 producer and 2 consumers. Reason 1) neither the producers nor the consumers must get reordered. Reason 2) one of the consumers might be missing (either the div or mod consumer might not be present. Yet we need to keep the consuming instruction with side