pvanhout 2d87319f06 [GlobalISel] Rewrite some simple rules using MIR Patterns
Rewrites some simple rules that cause little to no codegen regressions as MIR patterns.

I may have missed some easy cases, but some other rules have intentionally been left as-is because bigger
changes are needed to make them work.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D157690
2023-08-22 09:09:54 +02:00
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