[llvm] [InstCombine] Extend folding of aggregate construction to cases when source aggregates are partially available (PR #100828)

[via llvm-commits]

weiguozhi wrote:

> It is the number of instructions executed by `opt -O3`.

So it's the number of instructions executed by opt, not the number of instructions executed by the generated code. Am I right?

https://github.com/llvm/llvm-project/pull/100828