[llvm] [profcheck] Fix profile metadata propagation for Large Integer and FP Operations (PR #173114)

[Jin Huang via llvm-commits]

jinhuang1102 wrote:

> > so they have to changed/fixed together otherwise the PR will be blocked by the pre-merge CI tests because /llvm/test/Transforms/ExpandIRInsts.
> 
> I do not understand why they have to be fixed together. We can update the pass partially and update only the tests that changed.

I couldn't track down the previous `Linux x64 Test Results` showing that `expand-large-fp-convert-fptosi129.ll` blocked the CI. I might have misread the logs. Anyway, splitting the PR is a good idea. I'll handle that now.

https://github.com/llvm/llvm-project/pull/173114