... i8mm, 543 +sha3 and +sm4 extensions to -march= no longer require 544 -march=armv8.2-a or higher to be specified. Likewise, the 545 .... ...

gcc -march=armv8-a+pauth bytecode_builtins_list_generator/gen-regexp ... i8mm+bf16+flagm+pauth" but also with minimized to only pauth .... GCC supports it with RV64 (`.option arch` plus/minus). I haven't tried it on AArch64.

Of course, LLVM does not support it, even though the .... ... i8mm bf16) v8_5_a_simd_variants := $(call all_feat_combs, simd fp16 ...

diff --git a/gcc/testsuite/gcc.target/arm/multilib.exp b/gcc .... 28 Sept 2022 — cc1: error: invalid feature modifier in '-march=armv8.2-a+fp16+dotprod' [194/2715] Linking CXX static library lib/libprotobuf.a ninja: build ....