Jessica Paquette cc90d41945 [MIPatternMatch] Add m_OneNonDBGUse ...

Add a matcher that checks if the given subpattern has only one non-debug use.

Also improve existing m_OneUse testcase.

Differential Revision: https://reviews.llvm.org/D94705

2021-01-15 10:18:46 -08:00

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