[llvm] [SimplifyCFG] Fix hoisting problem in SimplifyCFG (PR #78615)

[Nikita Popov via llvm-commits]

nikic wrote:

Thank you, we can bootstrap successfully now.

Compile-time: https://llvm-compile-time-tracker.com/compare.php?from=5ce2f73b2e5e6664d74b49ee45f11505f8306577&to=294d231e634b32489035a8b223edc612d41ed2d1&stat=instructions:u
Code size: https://llvm-compile-time-tracker.com/compare.php?from=5ce2f73b2e5e6664d74b49ee45f11505f8306577&to=294d231e634b32489035a8b223edc612d41ed2d1&stat=size-text

We'll want to reduce the compile-time impact if possible, but the code size numbers and the stage2 improvements looks quite promising to me.

https://github.com/llvm/llvm-project/pull/78615