[llvm] [AArch64] Optimization of repeated constant loads (#51483) (PR #86249)

[David Green via llvm-commits]

davemgreen wrote:

Thanks! I think I would expect it to be an additional case in AArch64_IMM::expandMOVImm(..), that can check the two halves are the same.

https://github.com/llvm/llvm-project/pull/86249