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[LoadStoreVectorizer] Batch alias analysis results to improve compile time (#147555)
This should be generally good for a lot of LSV cases, but the attached
test demonstrates a specific compile time issue that appears in the
event where the `CaptureTracking` default max uses is raised.
Without using batching alias analysis, this test takes 6 seconds to
compile in a release build. With, less than a second. This is because
the mechanism that proves `NoAlias` in this case is very expensive
(`CaptureTracking.cpp`), and caching the result leads to 2 calls to that
mechanism instead of ~300,000 (run with -stats to see the difference)
This test only demonstrates the compile time issue if
`capture-tracking-max-uses-to-explore` is set to at least 1024, because
with the default value of 100, the `CaptureTracking` analysis is not
run, `NoAlias` is not proven, and the vectorizer gives up early.
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