[PATCH] D74976: [CostModel][X86] Improve extract/insert element costs (PR43605)

[Nico Weber via Phabricator via llvm-commits]

thakis added a comment.

We got a report that this slows down PDF rendering in pdfium rendering of one pdf by 11%, and it slowed down rendering of 6% of pdfs of a test corpus by 2+%.

https://bugs.chromium.org/p/chromium/issues/detail?id=1067111 has repro steps. Could you take a look?


Repository:
  rG LLVM Github Monorepo

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https://reviews.llvm.org/D74976