diff options
Diffstat (limited to 'arch/nds32/Kconfig.cpu')
| -rw-r--r-- | arch/nds32/Kconfig.cpu | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/nds32/Kconfig.cpu b/arch/nds32/Kconfig.cpu index bb06a1b7eef0..6482ed877f97 100644 --- a/arch/nds32/Kconfig.cpu +++ b/arch/nds32/Kconfig.cpu @@ -28,6 +28,19 @@ config LAZY_FPU For nomal case, say Y. +config SUPPORT_DENORMAL_ARITHMETIC + bool "Denormal arithmetic support" + depends on FPU + default n + help + Say Y here to enable arithmetic of denormalized number. Enabling + this feature can enhance the precision for tininess number. + However, performance loss in float pointe calculations is + possibly significant due to additional FPU exception. + + If the calculated tolerance for tininess number is not critical, + say N to prevent performance loss. + config HWZOL bool "hardware zero overhead loop support" depends on CPU_D10 || CPU_D15 |