[PATCH] [X86][XOP] Added XOP memory folding patterns + tests

[Simon Pilgrim]

Hi qcolombet, spatel, andreadb, tstellarAMD,

This patch adds the complete AMD Bulldozer XOP instruction set to the memory folding pattern tables for stack folding.
etc.

Note: Many of the XOP instructions have multiple table entries as it can fold loads from different sources.

If there are other people that have experience with XOP, please comment, thanks!

REPOSITORY
  rL LLVM

http://reviews.llvm.org/D7484

Files:
  lib/Target/X86/X86InstrInfo.cpp
  test/CodeGen/X86/stack-folding-xop.ll

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