[PATCH] D149390: [NFC][EarlyCSE]Modify test case to ensure branch weights are preserved with cse.

[Mingming Liu via Phabricator via llvm-commits]

mingmingl added a comment.

LICM may drop `!prof` for a similar reason that `!prof` is not a known metadata that doesn't have UB side effects (https://github.com/llvm/llvm-project/blob/2dc97921afba741586887037763784fc9b19c304/llvm/lib/Transforms/Scalar/LICM.cpp#L1744) -> so looks like another case to fix.

- test case https://gcc.godbolt.org/z/47Mj9vn9n

For one PRE case, both GVN and EarlyCSE could merge call instructions and preserve `!prof` (https://gcc.godbolt.org/z/3fzP3x6eG and https://gcc.godbolt.org/z/aT8W4crzv)


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D149390/new/

https://reviews.llvm.org/D149390