[llvm] Spill/restore FP/BP around instructions in which they are clobbered (PR #81048)

[via llvm-commits]

weiguozhi wrote:

@aengelke @rnk thanks for the good suggestion. I will implement it in a new patch.

Current implementation already checks if BP/FP is used in the function, and skip the pass if neither is used. So it seems there are still a lot of functions use FP with -O0.


https://github.com/llvm/llvm-project/pull/81048