[PATCH] D51030: [AArch64] Optimise load(adr address) to ldr address

[Dave Green via Phabricator via llvm-commits]

dmgreen created this revision.
dmgreen added reviewers: peter.smith, efriedma, t.p.northover, olista01, john.brawn.
Herald added a reviewer: javed.absar.
Herald added a subscriber: kristof.beyls.

Providing that the load is known to be 4 byte aligned, we can optimise a ldr(adr address) to just ldr address.


https://reviews.llvm.org/D51030

Files:
  lib/Target/AArch64/AArch64ISelDAGToDAG.cpp
  test/CodeGen/AArch64/code-model-tiny-abs.ll
  test/CodeGen/AArch64/ldradr.ll
  test/CodeGen/AArch64/tiny_model.ll

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