[PATCH 1/1] riscv: Enable compiler optimizations

[Chenxi Mao]

Enable ARCH_HAS_FAST_MULTIPLIER and ARCH_SUPPORTS_INT128 for better
code generation.
These 2 configurations works fine on GCC-9.3 and GCC-10.1

Signed-off-by: Chenxi Mao <maochenxi@xxxxxxxxx>
---
 arch/riscv/Kconfig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 128192e14ff2..f21b7e5188ca 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -26,6 +26,8 @@ config RISCV
 	select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
 	select ARCH_WANT_FRAME_POINTERS
 	select ARCH_WANT_HUGE_PMD_SHARE if 64BIT
+	select ARCH_HAS_FAST_MULTIPLIER
+	select ARCH_SUPPORTS_INT128 if GCC_VERSION >= 50000 || CC_IS_CLANG
 	select CLONE_BACKWARDS
 	select COMMON_CLK
 	select EDAC_SUPPORT
-- 
2.25.1