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+2023-06-23 Marek Polacek <polacek@redhat.com>
+
+ * c-common.h (cxx_dialect): Add cxx26 as a dialect.
+ * c-opts.cc (set_std_cxx26): New.
+ (c_common_handle_option): Set options when -std={c,gnu}++2{c,6} is
+ enabled.
+ (c_common_post_options): Adjust comments.
+ * c.opt: Add options for -std=c++26, std=c++2c, -std=gnu++26,
+ and -std=gnu++2c.
+ (std=c++2b): Mark as Undocumented.
+ (std=c++23): No longer Undocumented.
+
+2023-06-21 Alexander Monakov <amonakov@ispras.ru>
+
+ * c-gimplify.cc (fma_supported_p): New helper.
+ (c_gimplify_expr) [PLUS_EXPR, MINUS_EXPR]: Implement FMA
+ contraction.
+
2023-06-16 Alex Coplan <alex.coplan@arm.com>
* c.opt (Welaborated-enum-base): New.