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unknown user pushed a change to branch master in repository gcc.

from 1f2cbf12dda * tree-predcom.c (add_ref_to_chain): Remove check on distance. new 83c06cf0a07 * tree-predcom.c: Add general comment on Store-Store chain [...] new 8b0ceab57cf Implement LWG 2353

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Summary of changes: gcc/ChangeLog | 18 ++++ gcc/testsuite/ChangeLog | 4 + .../tree-ssa/{predcom-dse-1.c => predcom-dse-12.c} | 37 ++++--- gcc/tree-predcom.c | 111 ++++++++++++++++----- libstdc++-v3/ChangeLog | 8 ++ .../include/bits/stl_iterator_base_funcs.h | 11 +- .../testsuite/24_iterators/operations/lwg2353.cc | 26 +++++ .../testsuite/24_iterators/operations/next_neg.cc | 42 -------- 8 files changed, 170 insertions(+), 87 deletions(-) copy gcc/testsuite/gcc.dg/tree-ssa/{predcom-dse-1.c => predcom-dse-12.c} (63%) create mode 100644 libstdc++-v3/testsuite/24_iterators/operations/lwg2353.cc delete mode 100644 libstdc++-v3/testsuite/24_iterators/operations/next_neg.cc