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from 21ad2d42481 [X86][SkylakeServer] Remove unnecessary PMULLD instrw overrides. new e1bbe842073 [PatternMatch] allow undef elements when matching a vector zero

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Summary of changes: include/llvm/IR/PatternMatch.h | 33 +++++++++----- lib/Analysis/InstructionSimplify.cpp | 20 ++++----- lib/Transforms/InstCombine/InstCombineAndOrXor.cpp | 1 - .../InstCombine/X86/x86-vector-shifts.ll | 10 +++-- test/Transforms/InstCombine/cast-int-icmp-eq-0.ll | 6 +-- .../InstCombine/cast-unsigned-icmp-eqcmp-0.ll | 27 +++-------- test/Transforms/InstCombine/min-positive.ll | 6 +-- test/Transforms/InstCombine/select-of-bittest.ll | 52 ++++++++++------------ test/Transforms/InstSimplify/AndOrXor.ll | 3 +- .../InstSimplify/cast-unsigned-icmp-cmp-0.ll | 17 ++----- test/Transforms/InstSimplify/div.ll | 3 +- test/Transforms/InstSimplify/mul.ll | 3 +- test/Transforms/InstSimplify/negate.ll | 7 +-- test/Transforms/InstSimplify/rem.ll | 3 +- test/Transforms/InstSimplify/shift.ll | 6 +-- 15 files changed, 79 insertions(+), 118 deletions(-)