[PATCH] D106701: [clang] Add -falign-loops=N where N is a power of 2

[Fangrui Song via Phabricator via llvm-commits]

MaskRay added a comment.

In D106701#2901639 <https://reviews.llvm.org/D106701#2901639>, @efriedma wrote:

> Can we hook this up to a LLVM IR function attribute, instead of making it a codegen flag?

The current TargetLoweringBase::PrefLoopAlignment is global. I have considered a function attribute, but it seems overkill for now.
(Inlining behavior is a bit unclear.)
The current use cases just need a global value instead of a refined per-function value.


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