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from 4c19122bf5a Check optab before transforming atomic bit test and operations new d1753b4be98 gimple-fold: Transform stp*cpy_chk to str*cpy directly new cea4dab861b gimple-fold: Use ranges to simplify _chk calls new 323026c7dfe gimple-fold: Use ranges to simplify strncat and snprintf

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Summary of changes: gcc/gimple-fold.c | 344 ++++++++++++++------------------ gcc/testsuite/gcc.dg/Wobjsize-1.c | 5 +- gcc/testsuite/gcc.dg/fold-stringops-1.c | 23 +++ gcc/testsuite/gcc.dg/fold-stringops-2.c | 63 ++++++ gcc/testsuite/gcc.dg/fold-stringops-3.c | 18 ++ 5 files changed, 257 insertions(+), 196 deletions(-) create mode 100644 gcc/testsuite/gcc.dg/fold-stringops-1.c create mode 100644 gcc/testsuite/gcc.dg/fold-stringops-2.c create mode 100644 gcc/testsuite/gcc.dg/fold-stringops-3.c