[llvm] [LTO] Run Argument Promotion before IPSCCP (PR #111163)

[Nikita Popov via llvm-commits]

nikic wrote:

I tested this a while ago but didn't post here: https://llvm-compile-time-tracker.com/compare.php?from=bf488ed6e1fbe4c494a1dc0dd199a3d03405784e&to=a4fe1ec912f4a2479218fc2d30ccbc8cf82cf782&stat=instructions:u It's indeed surprisingly cheap to run these extra passes.

A question I have here if this problem is somehow specific to LTO, or whether you just happen to be optimizing for LTO?

https://github.com/llvm/llvm-project/pull/111163