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This changes the hook to support checking version mergeability for cases where the version strings do imply the same version, but are conflicting in some other way so cannot be merged. This is a change required for adding priority version support in aarch64. gcc/ChangeLog: * target.def (TARGET_OPTION_SAME_FUNCTION_VERSIONS): Update documentation. * tree.cc (disjoint_version_decls): Change for new NULL parameter to same_function_versions. (diagnose_versioned_decls): Update to pass diagnostic location to same_function_versions. * doc/tm.texi: Regenerate. * config/aarch64/aarch64.cc (aarch64_same_function_versions): Update hook impl for new arguments. * config/riscv/riscv.cc (riscv_same_function_versions): Update hook impl for new arguments. * config/loongarch/loongarch.cc (loongarch_same_function_versions): Likewise * hooks.cc (hook_stringslice_stringslice_unreachable): Changed to... (hook_stringslice_consttree_stringslice_consttree_unreachable): ...this and add extra arguments. * hooks.h (hook_stringslice_stringslice_unreachable): Changed to... (hook_stringslice_consttree_stringslice_consttree_unreachable): and add extra arguments.
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