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from 9e0e53f02f5 Implement C++20 P0388R4, DR 1307, and DR 330. new d9d534895b7 PR tree-optimization/90879 - fold zero-equality of strcmp b [...]
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Summary of changes: gcc/ChangeLog | 21 + gcc/builtins.c | 2 +- gcc/c-family/ChangeLog | 5 + gcc/c-family/c.opt | 6 + gcc/calls.c | 8 + gcc/doc/invoke.texi | 26 ++ gcc/gimple-fold.c | 36 +- gcc/gimple-ssa-sprintf.c | 44 +- gcc/testsuite/ChangeLog | 12 + gcc/testsuite/gcc.dg/Wstring-compare-2.c | 127 ++++++ gcc/testsuite/gcc.dg/Wstring-compare.c | 181 +++++++++ gcc/testsuite/gcc.dg/strcmpopt_3.c | 20 +- gcc/testsuite/gcc.dg/strcmpopt_6.c | 207 ++++++++++ gcc/testsuite/gcc.dg/strlenopt-65.c | 53 ++- gcc/testsuite/gcc.dg/strlenopt-66.c | 38 +- gcc/testsuite/gcc.dg/strlenopt-69.c | 126 ++++++ gcc/tree-ssa-strlen.c | 664 +++++++++++++++++++------------ 17 files changed, 1261 insertions(+), 315 deletions(-) create mode 100644 gcc/testsuite/gcc.dg/Wstring-compare-2.c create mode 100644 gcc/testsuite/gcc.dg/Wstring-compare.c create mode 100644 gcc/testsuite/gcc.dg/strcmpopt_6.c create mode 100644 gcc/testsuite/gcc.dg/strlenopt-69.c