[PATCH] D55365: [CodeGen] Allow mempcy/memset to generate small overlapping stores.

[Clement Courbet via Phabricator via llvm-commits]

courbet created this revision.
Herald added subscribers: jsji, eraman, javed.absar, nemanjai.

All targets either just return false here or properly model `Fast`, so I
don't think there is any reason to prevent CodeGen from doing the right
thing here.


Repository:
  rL LLVM

https://reviews.llvm.org/D55365

Files:
  lib/CodeGen/SelectionDAG/SelectionDAG.cpp
  test/CodeGen/AArch64/arm64-memcpy-inline.ll
  test/CodeGen/PowerPC/jaggedstructs.ll
  test/CodeGen/PowerPC/structsinmem.ll
  test/CodeGen/PowerPC/structsinregs.ll
  test/CodeGen/X86/memcpy-from-string.ll
  test/CodeGen/X86/memset-2.ll
  test/CodeGen/X86/memset-zero.ll
  test/CodeGen/X86/unaligned-load.ll

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