[llvm] [AArch64][ARM] Move ARM-specific InstCombine transforms to new module (PR #169589)

[David Green via llvm-commits]

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@@ -1,5 +1,5 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt < %s -passes=instcombine -S | FileCheck %s
+; RUN: opt < %s -mtriple=arm -passes=instcombine -S | FileCheck %s
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davemgreen wrote:

Is this one necessary, if the triple is already on the target line below? If so it is better if they match to avoid confusion.

https://github.com/llvm/llvm-project/pull/169589