[PATCH] D34141: [X86] Recognize constant arrays with special values and replace loads from it with subtract and shift instructions, which then may be replaced by BZHI machine instruction.

[Ayman Musa via Phabricator via llvm-commits]

aymanmus updated this revision to Diff 103348.
aymanmus added a comment.
Herald added a subscriber: mgorny.

Moving the transformation to an independent pass, which currently runs only on X86, as suggested by @delena.


https://reviews.llvm.org/D34141

Files:
  include/llvm/CodeGen/Passes.h
  include/llvm/InitializePasses.h
  lib/CodeGen/CMakeLists.txt
  lib/CodeGen/SubstituteLoadWithSubShr.cpp
  lib/Target/X86/X86TargetMachine.cpp
  test/CodeGen/X86/replace-load-with-sub-shr.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D34141.103348.patch
Type: text/x-patch
Size: 10793 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20170621/14ebb3c7/attachment.bin>