[PATCH] D40831: [AArch64] Only use writeback in the load/store optimizer when needed

[Evandro Menezes via Phabricator via llvm-commits]

evandro added a comment.

I'm not sure what is gained by not performing this optimization, if I understood the gist of it from the new test case below.  For even if the register is killed, the pointer adjustment is folded into the load or store and an instruction is eliminated.  What other optimizations are expected to be happen should this patch be applied?


Repository:
  rL LLVM

https://reviews.llvm.org/D40831