[PATCH] ARMLoadStoreOptimizer: Create LDRD/STRD on thumb2

[Matthias Braun]

Hi jmolloy, rengolin, mroth, charlieturner7c5,

This patch extends the Post-RA LoadStoreOptimizer to form STRD/LDRD instructions on thumb2. While the Pre-RA LDRD/STRD formation already catches many cases we can now also catch spills and reloads.

This builds upon http://reviews.llvm.org/D10140.

REPOSITORY
  rL LLVM

http://reviews.llvm.org/D10623

Files:
  lib/Target/ARM/ARMLoadStoreOptimizer.cpp
  test/CodeGen/ARM/2013-05-02-AAPCS-ByVal-Structs-C4-C5-VFP.ll
  test/CodeGen/ARM/byval-align.ll
  test/CodeGen/ARM/ldrd.ll
  test/CodeGen/ARM/memset-inline.ll
  test/CodeGen/Thumb2/aapcs.ll

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