[llvm] [llvm][gvn-sink] Don't try to sink inline asm (PR #138414)

[Paul Kirth via llvm-commits]

ilovepi wrote:

Yes, that seems to be why. For GVNSink, I'd guess its still better to skip numbering those instructions, but maybe the check in `canReplaceOperandWithVariable()` should be updated too?

https://github.com/llvm/llvm-project/pull/138414