ARCv2: add knob for DIV_REV in Kconfig
Being highly configurable core ARC HS among other features might be configured with or without DIV_REM_OPTION (hardware divider). That option when enabled adds following instructions: div, divu, rem, remu. By default ARC HS38 has this option enabled. So we add here possibility to disable usage of hardware divider by compiler. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
parent
aeec6cdad6
commit
d05a76ab4d
|
@ -379,6 +379,10 @@ config ARC_HAS_LL64
|
|||
dest operands with 2 possible source operands.
|
||||
default y
|
||||
|
||||
config ARC_HAS_DIV_REM
|
||||
bool "Insn: div, divu, rem, remu"
|
||||
default y
|
||||
|
||||
config ARC_HAS_RTC
|
||||
bool "Local 64-bit r/o cycle counter"
|
||||
default n
|
||||
|
|
|
@ -36,8 +36,16 @@ cflags-$(atleast_gcc44) += -fsection-anchors
|
|||
cflags-$(CONFIG_ARC_HAS_LLSC) += -mlock
|
||||
cflags-$(CONFIG_ARC_HAS_SWAPE) += -mswape
|
||||
|
||||
ifdef CONFIG_ISA_ARCV2
|
||||
|
||||
ifndef CONFIG_ARC_HAS_LL64
|
||||
cflags-$(CONFIG_ISA_ARCV2) += -mno-ll64
|
||||
cflags-y += -mno-ll64
|
||||
endif
|
||||
|
||||
ifndef CONFIG_ARC_HAS_DIV_REM
|
||||
cflags-y += -mno-div-rem
|
||||
endif
|
||||
|
||||
endif
|
||||
|
||||
cflags-$(CONFIG_ARC_DW2_UNWIND) += -fasynchronous-unwind-tables
|
||||
|
|
Loading…
Reference in New Issue