[PATCH] D37648: [SLPVectorizer] Fix PR21780 Expansion of 256 bit vector loads fails to fold into shuffles

[Hal Finkel via Phabricator via llvm-commits]

hfinkel added a comment.

In https://reviews.llvm.org/D37648#906216, @dtemirbulatov wrote:

> Update for solution, here it uses metadata "speculation.marker" with set of offsets instead of maximum offset as before, thread for discussion http://lists.llvm.org/pipermail/llvm-dev/2017-September/117782.html.


Can you please update the thread with your new plan for this metadata (what adds it, when, and what consumes it), including the proposed definition for the LangRef, so we can all see exactly what you're proposing?


https://reviews.llvm.org/D37648