f67158422c
This makes use of the more accurate register number introduced in PR #70222 to avoid CFI calculations for unsupported registers. This has basically no impact right now, but results in a 0.2% compile-time improvement at O0 when applied on top of #70958. The reason is that the extra registers that PR adds push the `BitVector` out of the `SmallVector` space, which results in an outsized impact. (This does make me wonder whether `BitVector` should accept an `N` template parameter to allow using a larger `SmallVector`...)
The LLVM Compiler Infrastructure
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