3b715e6162
Implement DYNAMIC_ARCH support for riscv64. Three cpu types are supported, riscv64_generic, riscv64_zvl256b, riscv64_zvl128b. The two non-generic kernels require CPU support for RVV 1.0 to function correctly. Detecting that a riscv64 device supports RVV 1.0 is a little complicated as there are some boards on the market that advertise support for V via hwcap but only support RVV 0.7.1, which is not binary compatible with RVV 1.0. The approach taken is to first try hwprobe. If hwprobe is not available, we fall back to hwcap + an additional check to distinguish between RVV 1.0 and RVV 0.7.1. Tested on a VM with VLEN=256, a CanMV K230 with VLEN=128 (with only the big core enabled), a Lichee Pi with RVV 0.7.1 and a VF2 with no vector. A compiler with RVV 1.0 support must be used to build OpenBLAS for riscv64 when DYNAMIC_ARCH=1. Signed-off-by: Mark Ryan <markdryan@rivosinc.com> |
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| getf2 | ||
| getrf | ||
| getrs | ||
| laswp | ||
| lauu2 | ||
| lauum | ||
| potf2 | ||
| potrf | ||
| trti2 | ||
| trtri | ||
| trtrs | ||
| CMakeLists.txt | ||
| Makefile | ||