[PATCH] D122915: [AArch64] UBFM fold in the MIPeepholeOpt.

[chenglin.bi via Phabricator via llvm-commits]

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lsr x1, x0, n0
lsr x2, x1, n1

>
-

lsr x2, x0, (n0 + n1)


https://reviews.llvm.org/D122915

Files:
  llvm/lib/Target/AArch64/AArch64MIPeepholeOpt.cpp
  llvm/test/CodeGen/AArch64/aarch64-ubfm.ll

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