[PATCH] D64630: [DebugInfo] Address performance regression with r364515

[Paul Robinson via Phabricator via llvm-commits]

probinson added a comment.

> With ASAN, packs of up to 800 DBG_VALUEs in a row appear (for that file)

That seems excessive; in the past when I've seen this explosion of DBG instructions, the vast majority were redundant. Have you looked at them to see if this is the case?  We might rather eliminate duplicates than write code to make it cheaper to have lots of unnecessary instructions.


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  rL LLVM

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