[PATCH] D109729: [RISCV] Optimize (add (shl x, c0), (shl y, c1))

[Craig Topper via Phabricator via llvm-commits]

craig.topper added a comment.

In D109729#2998731 <https://reviews.llvm.org/D109729#2998731>, @benshi001 wrote:

> The reason I write both AddShlShl_1A and def AddShlShl_1B, is that add is not commutative in PatFrag.

You should write that as a comment in the code.


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