[When I wrote that xor was broken on GPRs and this fixes it, I meant
xor_one_cmpl rather than xor, sorry!]
The pattern for xor_one_cmpl never matched, due to the action of
combine_simplify_rtx; hence, separate this pattern out from that for ORN/BIC.
ORN/BIC have equivalent SIMD-reg variants, so add those for the benefit of
values in vector registers (e.g. passed as [u]int64x1_t parameters).
EON does not have a SIMD-reg variant; however, it seems better to split it (to
XOR + NOT) than to move both arguments to GPRs, perform EON, and move the result
back.
gcc/ChangeLog:
* config/aarch64/aarch64.c (<LOGICAL:optab>_one_cmpl<mode>3):
Reparameterize to...
(<NLOGICAL:optab>_one_cmpl<mode>3): with extra SIMD-register variant.
(xor_one_cmpl<mode>3): New define_insn_and_split.
* config/aarch64/iterators.md (NLOGICAL): New define_code_iterator.
gcc/testsuite/ChangeLog:
* gcc.target/aarch64/eon_1.c: New test.
