[PATCH] D49771: CodeGen: use non-zero memset when possible for automatic variables

JF Bastien via Phabricator via cfe-commits cfe-commits at lists.llvm.org
Tue Jul 31 14:19:56 PDT 2018

jfb added a comment.

In https://reviews.llvm.org/D49771#1181008, @mehdi_amini wrote:

> I'm curious: isn't the kind of optimization we should expect LLVM to provide?

Maybe? It seems obvious to do here since we know we'll probably want to be doing it, and I have another patch I'm working on which will make it that much more obviously useful to have here. The middle-end can definitely figure it out but it just seems like more work, later, so in the meantime we'd be looking at more stuff.



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