[Tcwg-commits] [llvm] branch master updated (7ff284e -> be29b10)

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from 7ff284e [x86] add tests for potential negation folds new be29b10 [DAG] fold negation of sign-bit

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Summary of changes: lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 38 +++++++++++++++++++++++--------- test/CodeGen/X86/negate.ll | 17 ++++---------- 2 files changed, 31 insertions(+), 24 deletions(-)