[PATCH] D25374: [DAGCombiner] Update most ADD combines to support general vector combines

[Simon Pilgrim via llvm-commits]

RKSimon created this revision.
RKSimon added reviewers: eli.friedman, mkuper, niravd, spatel, andreadb.
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Add a number of helper functions to match scalar or vector equivalent constant/splat values to allow most of the combine patterns to be used by vectors.


Repository:
  rL LLVM

https://reviews.llvm.org/D25374

Files:
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  test/CodeGen/X86/combine-add.ll

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