[llvm] [PowerPC] Generate one branch instruction if one block is required (PR #105662)

[Chen Zheng via llvm-commits]

chenzheng1030 wrote:

Thanks very much for doing the improvements. We are retiring the PPCExpandIsel pass. See https://github.com/llvm/llvm-project/pull/84289.

https://github.com/llvm/llvm-project/pull/105662