[llvm] [AA] Move Target Specific AA before BasicAA (PR #125965)

[Yingwei Zheng via llvm-commits]

https://github.com/dtcxzyw commented:

Some suggestions:
1. Split this PR into three patches for better review experience:
  + AMDGPUAA: fix a crash bug
  + FlattenCFG: fix a miscompilation bug
  + This PR: improve the compilation time
2. Can you share some compilation time measurements on your internal benchmarks? Since @nikic's benchmark only compiles CTMark into X86 binaries, I think the compile-time data is just noise :(


https://github.com/llvm/llvm-project/pull/125965