[PATCH] D48229: [NFC][SCEV] Add tests related to bit masking (PR37793)

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a reviewer: sanjoy.
efriedma added inline comments.


================
Comment at: test/Analysis/ScalarEvolution/lshr-shl-differentconstmask.ll:44-45
+;
+  %tmp1 = lshr i32 %val, 6
+  %tmp2 = shl i32 %tmp1, 4
+  ret i32 %tmp2
----------------
lebedev.ri wrote:
> @spatel BTW, how do we want to canonicalize it? https://rise4fun.com/Alive/mxm
DAGCombine currently canonicalizes to srl+and.  Unless there's a compelling reason to choose something else, that seems fine.


Repository:
  rL LLVM

https://reviews.llvm.org/D48229