[all-commits] [llvm/llvm-project] 67bf3a: [AArch64][GlobalISel] Don't contract cross-bank co...

[Amara Emerson via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 67bf3ac7446bd8ba16bb5ef82fa9f28a848616da
      https://github.com/llvm/llvm-project/commit/67bf3ac7446bd8ba16bb5ef82fa9f28a848616da
  Author: Amara Emerson <amara at apple.com>
  Date:   2021-08-20 (Fri, 20 Aug 2021)

  Changed paths:
    M llvm/lib/Target/AArch64/GISel/AArch64InstructionSelector.cpp
    M llvm/test/CodeGen/AArch64/GlobalISel/contract-store.mir

  Log Message:
  -----------
  [AArch64][GlobalISel] Don't contract cross-bank copies into truncating stores.

Truncating stores with GPR bank sources shouldn't be mutated into using FPR bank
sources, since those aren't supported.

Ideally this should be a selection failure in the tablegen patterns, but for now
avoid generating them.