[PATCH] D130115: [DAGCombiner] More load-store forwarding for big-endian

[Roland Froese via Phabricator via llvm-commits]

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Get some load-store forwarding cases for big-endian where a larger store covers a smaller load, and the offset would be 0 and handled on little-endian but on big-endian the offset is adjusted to be non-zero.  The idea is just to shift the data to make it look like the offset 0 case.


https://reviews.llvm.org/D130115

Files:
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/test/CodeGen/AArch64/load-store-forwarding.ll
  llvm/test/CodeGen/Mips/cconv/vector.ll
  llvm/test/CodeGen/PowerPC/aix-cc-byval.ll
  llvm/test/CodeGen/PowerPC/ppc64-byval-larger-struct.ll
  llvm/test/CodeGen/PowerPC/ppc64-byval-multi-store.ll
  llvm/test/CodeGen/PowerPC/pr45301.ll

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