[llvm] [SelectionDAG] Lowering usub.sat(a, 1) to a - (a != 0) (PR #170076)

[guan jian via llvm-commits]

rez5427 wrote:

> Please can you regenerate llvm/test/CodeGen/X86/combine-sub-usat.ll now thath we have vector handling

There are regressions

https://github.com/llvm/llvm-project/pull/170076