[llvm] Correctly set pointer bit for aggregate values in SelectionDAGBuilder to fix CCIfPtr (PR #70554)

[Camil Staps via llvm-commits]

camilstaps wrote:

There are failing tests (lld/test/ELF/lto/exclude-libs-libcall.ll and lld/test/ELF/lto/version-libcall.ll), but they do not contain pointer values and I don't see how they might be related. Could they be unrelated?

https://github.com/llvm/llvm-project/pull/70554