[PATCH] ARM: Implement big endian bit-conversion for NEON types

[Christian Pirker]

Hi All,

This patch enables correct conversion between integer and vector data in big endian mode (data format differs wrt. endian mode).
The patch covers the conversion between floating point and vector types, and the function argument passing of vector types providing compatibility to the ARM ABI.
Big endian bit-conversions are implemented using VREV64 and VREV32 instructions.

Thanks,
Christian

http://reviews.llvm.org/D3651

Files:
  lib/Target/ARM/ARMFastISel.cpp
  lib/Target/ARM/ARMISelLowering.cpp
  lib/Target/ARM/ARMInstrNEON.td
  test/CodeGen/ARM/big-endian-neon-bitconv.ll
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