[llvm] [CaptureTracking] Do not capture compares of same object (PR #74228)

[Joshua Cao via llvm-commits]

caojoshua wrote:

This patch is incompatible with [this code block](https://github.com/llvm/llvm-project/blob/6561efe142ae2a5d434ff646319b0bfb1dd39dee/llvm/lib/Analysis/InstructionSimplify.cpp#L2794-L2835), which simplifies non-capturing pointer comparisons to false.

https://github.com/llvm/llvm-project/pull/74228