linux-next/arch/loongarch
Xi Ruoyao 2cce905959 LoongArch: Select ARCH_HAS_FAST_MULTIPLIER
LA464 and LA664 can do 32-bit/64-bit integer multiplication with a
latency of 4 cycles and a throughput of 2 ops per cycle.  It is
comparable to the mainstream x86 and arm64 cores, so we can select
ARCH_HAS_FAST_MULTIPLIER like them.

It speeds up __sw_hweight32() in lib/hweight.c for about 14% on LA464
and 11% on LA664, while __sw_hweight64() for about 30% on LA464 and 33%
on LA664.

Signed-off-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2024-05-14 12:24:18 +08:00
..
boot LoongArch: Update dts for Loongson-2K2000 to support GMAC/GNET 2024-04-10 21:08:51 +08:00
configs LoongArch changes for v6.8 2024-01-19 13:30:49 -08:00
crypto LoongArch/crypto: Clean up useless assignment operations 2024-03-19 15:50:34 +08:00
include LoongArch: Fix callchain parse error with kernel tracepoint events 2024-04-24 12:36:07 +08:00
kernel LoongArch: Lately init pmu after smp is online 2024-04-25 22:17:52 +08:00
kvm LoongArch changes for v6.9 2024-03-22 10:22:45 -07:00
lib LoongArch: Add ORC stack unwinder support 2024-03-11 22:23:47 +08:00
mm LoongArch: Fix access error when read fault on a write-only VMA 2024-04-24 12:36:07 +08:00
net LoongArch: BPF: Prevent out-of-bounds memory access 2024-01-17 12:43:13 +08:00
pci LoongArch: Add FDT booting support from efi system table 2022-12-14 08:41:53 +08:00
power LoongArch: Export some arch-specific pm interfaces 2023-06-29 20:58:44 +08:00
vdso LoongArch: Add ORC stack unwinder support 2024-03-11 22:23:47 +08:00
Kbuild LoongArch: Allow device trees be built into the kernel 2024-01-17 12:43:00 +08:00
Kconfig LoongArch: Select ARCH_HAS_FAST_MULTIPLIER 2024-05-14 12:24:18 +08:00
Kconfig.debug LoongArch: Add ORC stack unwinder support 2024-03-11 22:23:47 +08:00
Makefile LoongArch changes for v6.9 2024-03-22 10:22:45 -07:00