[llvm] [AArch64][GlobalISel] Add pre-legalizer combines for AVGFLOOR and AVGCEIL (PR #192866)

[David Green via llvm-commits]

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@@ -1174,29 +1174,29 @@ def funnel_shift_overshift: GICombineRule<
 
 // Transform: fshl x, z, y | shl x, y -> fshl x, z, y
 // Transform: shl x, y | fshl x, z, y  -> fshl x, z, y
-// FIXME: TableGen didn't handle G_OR commutativity on its own, 
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davemgreen wrote:

Can you remove all the extra formatting diffs.

https://github.com/llvm/llvm-project/pull/192866