[PATCH] [PPC64LE] Remove unnecessary swaps from lane-insensitive vector computations

[Bill Schmidt]

Here's an updated patch that adds support for -mattr={+,-}optimize-swaps.  I'll post a companion patch shortly for Clang, adding -m[no-]optimize-swaps in the front end to generate this attribute.

The test case now includes a -mno-optimize-swaps variant.


REPOSITORY
  rL LLVM

http://reviews.llvm.org/D8565

Files:
  lib/Target/PowerPC/CMakeLists.txt
  lib/Target/PowerPC/PPC.h
  lib/Target/PowerPC/PPC.td
  lib/Target/PowerPC/PPCSubtarget.cpp
  lib/Target/PowerPC/PPCSubtarget.h
  lib/Target/PowerPC/PPCTargetMachine.cpp
  lib/Target/PowerPC/PPCVSXSwapRemoval.cpp
  test/CodeGen/PowerPC/swaps-le-1.ll
  test/CodeGen/PowerPC/vsx-ldst-builtin-le.ll
  test/CodeGen/PowerPC/vsx-ldst.ll

EMAIL PREFERENCES
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