On 2023/9/28 18:44, Björn Töpel wrote:
Pu Lehui <pulehui@xxxxxxxxxxxxxxx> writes:
Add Zbb support [0] to optimize code size and performance of RV64 JIT.
Meanwhile, adjust the code for unification and simplification. Tests
test_bpf.ko and test_verifier have passed, as well as the relative
testcases of test_progs*.
Nice work!
Did you measure how the instruction count changed for, say, test_bpf.ko
and test_progs? >
Sorry for not responding for so long.
I made statistics on the number of body instructions and the changes are
as follows:
test_progs:
1. verifier_movsx: 260 -> 224
2. verifier_bswap: 180 -> 56
test_bpf.ko:
1. MOVSX: 154 -> 146
2. BSWAP: 336 -> 136
We can see that the change in BSWAP is obvious, and the change in MOVSX
is in line with expectations.
Björn
