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This is a non-C++ related part from the PR89074 address_compare changes. For "foo" == "foo" we already optimize this from the (cmp @0 @0) simplification, because we use operand_equal_p in that case and operand_equal_p also compares the STRING_CSTs bytes rather than just addresses. 2022-01-19 Jakub Jelinek <jakub@redhat.com> PR c++/89074 * fold-const.cc (address_compare): Consider different STRING_CSTs with the same lengths that memcmp the same as equal, not different. * gcc.dg/tree-ssa/pr89074.c: New test.
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