[llvm] [GlobalISel] Add integer_reassoc_combines from SelectionDAG (PR #177931)

[Luisa Cicolini via llvm-commits]

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@@ -1813,6 +1799,21 @@ shl_of_vscale,
 sub_of_vscale,
 ]>;
 
+// fold ((A + (B - C)) - B) -> A-C
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luisacicolini wrote:

would it be possible to make this comment consistent wrt. spacing? e.g. `B-C` as below

https://github.com/llvm/llvm-project/pull/177931