[clang] [llvm] [llvm] Avoid resolving `.incbin` during symbol collection (PR #172920)

[Jan Svoboda via cfe-commits]

jansvoboda11 wrote:

I finally got back to this PR. We have a bunch of tests that check that we error out on non-absolute expressions in `.if` directives, and it seems that the same is documented behavior of (at least) the GNU assembler. I think it's safe to rely on that invariant. I haven't heard any other concerns, so I'm merging.

https://github.com/llvm/llvm-project/pull/172920