[llvm] [DependenceAnalysis] Extending SIV to handle fusable loops (PR #128782)

[Ryotaro Kasuga via llvm-commits]

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kasuga-fj wrote:

It would be better to generate CHECK directives with `update_analyze_test_check.py`. Please refer to other tests in the same directory.

https://github.com/llvm/llvm-project/pull/128782