https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121778
Dusan Stojkovic <dusan.stojko...@rt-rk.com> changed:
What |Removed |Added
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CC| |dusan.stojko...@rt-rk.com
--- Comment #1 from Dusan Stojkovic <dusan.stojko...@rt-rk.com> ---
GCC could generate the following assembly for test_011:
test_011:
roriw a0, a0, 31
xori a0, a0, 1
ret
Since the bitmanip spec doesn't offer a rotate left immediate, a rotate right
immediate can be used instead.
I tested this version against the current GCC trunk, and they produce the same
values for all unsigned ints. Compiled with -march=rv64gcvb_zicond -O2
-mabi=lp64d
