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from 0d04fe49239 libstdc++: Add [[nodiscard]] to sequence containers new 96146e61cd7 Fold (X<<C1)^(X<<C2) to a multiplication when possible. new f2e5d2717d9 by_pieces: Pass MAX_PIECES to op_by_pieces_d new 31855ba6b16 Add emulated gather capability to the vectorizer

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Summary of changes: gcc/expr.c | 26 +++---- gcc/match.pd | 56 +++++++++++++++ gcc/testsuite/gcc.dg/fold-ior-4.c | 61 ++++++++++++++++ gcc/testsuite/gcc.target/i386/vect-gather-1.c | 20 ++++++ gcc/testsuite/gfortran.dg/vect/vect-8.f90 | 2 +- gcc/tree-vect-data-refs.c | 31 +++++--- gcc/tree-vect-patterns.c | 2 +- gcc/tree-vect-stmts.c | 100 ++++++++++++++++++++++++-- 8 files changed, 268 insertions(+), 30 deletions(-) create mode 100644 gcc/testsuite/gcc.dg/fold-ior-4.c create mode 100644 gcc/testsuite/gcc.target/i386/vect-gather-1.c