[PATCH] D33518: [AArch64] Fix stores of zero values

[Nirav Dave via Phabricator via llvm-commits]

niravd created this revision.
Herald added subscribers: javed.absar, rengolin, aemerson.

Now that DAGCombiner may merge multiple non-consecutive stores in a 
single pass, the simple one-use analysis for when to split a store 
into stores of XZR for pairing purposes. Improve check to capture
these cases.


https://reviews.llvm.org/D33518

Files:
  lib/Target/AArch64/AArch64ISelLowering.cpp
  test/CodeGen/AArch64/ldst-opt.ll

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