Richard Osborne bfdc557c8a Expand unaligned 32 bit loads from an address which is a constant ...

offset from a 32 bit aligned base as follows:

  ldw low, base[offset >> 2]
  ldw high, base[(offset >> 2) + 1]
  shr low_shifted, low, (offset & 0x3) * 8
  shl high_shifted, high, 32 - (offset & 0x3) * 8
  or result, low_shifted, high_shifted

Expand 32 bit loads / stores with 16 bit alignment into two 16 bit
loads / stores.

llvm-svn: 75902

2009-07-16 10:42:35 +00:00

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llvm

Expand unaligned 32 bit loads from an address which is a constant

2009-07-16 10:42:35 +00:00

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