[llvm] Users/xiangzhangllvm/loop unroll folding branches (PR #74703)

[via llvm-commits]

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@@ -0,0 +1,939 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
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xiangzh1 wrote:

ok,  let me change it?

https://github.com/llvm/llvm-project/pull/74703