[llvm-dev] Removal of Global SRoA

[Chris Lattner via llvm-dev]

Hi Fangrui,

In this patch you removed an optimization outright: https://reviews.llvm.org/rG129f466e222e

I didn’t see this get discussed, and the only justification seems to be that “it doesn’t does not trigger at all when bootstrapping clang”.

This is a spec optimization, and while that may not be important to Google, that is important to many people who use LLVM.  Can you please revert this patch and discuss if further?

-Chris