On Wed, 08 Jul 2020 22:19:22 PDT (-0700), [email protected] wrote:
Enable ARCH_HAS_FAST_MULTIPLIER on RV64I
which works fine on GCC-9.3 and GCC-10.1
PS2: remove ARCH_SUPPORTS_INT128 because of RV64I already enabled.
Signed-off-by: Chenxi Mao <[email protected]>
---
arch/riscv/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 128192e14ff2..84e6777fecad 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -202,6 +202,7 @@ config ARCH_RV64I
bool "RV64I"
select 64BIT
select ARCH_SUPPORTS_INT128 if CC_HAS_INT128 && GCC_VERSION >= 50000
+ select ARCH_HAS_FAST_MULTIPLIER
select HAVE_DYNAMIC_FTRACE if MMU
select HAVE_DYNAMIC_FTRACE_WITH_REGS if HAVE_DYNAMIC_FTRACE
select HAVE_FTRACE_MCOUNT_RECORD
Ah, thanks -- this one didn't show up when I was looking at the last one. I
think we can put the fast multiplier on rv32 and rv64, there shouldn't be any
difference there. I guess in theory we should be sticking this all in some
sort of "platform type" optimization flags, but that's probably bit much for
now.
