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target.mk: change CPU_CFLAGS to better suit target CPUs

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-march forces the compiler to generate generic code, whereas -mcpu
allows it to target the specific CPU variant and use instructions that
the generic architecture may not have

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2016-07-14 15:43:49 +02:00
parent 11d496d156
commit f021ea47d3
1 changed files with 13 additions and 13 deletions
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26
include/target.mk
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@ -183,19 +183,19 @@ ifeq ($(DUMP),1)
endif endif
ifneq ($(findstring arm,$(ARCH)),) ifneq ($(findstring arm,$(ARCH)),)
CPU_TYPE ?= xscale CPU_TYPE ?= xscale
CPU_CFLAGS_arm920t = -march=armv4t -mtune=arm920t CPU_CFLAGS_arm920t = -mcpu=arm920t
CPU_CFLAGS_arm926ej-s = -march=armv5te -mtune=arm926ej-s CPU_CFLAGS_arm926ej-s = -mcpu=arm926ej-s
CPU_CFLAGS_arm1136j-s = -march=armv6 -mtune=arm1136j-s CPU_CFLAGS_arm1136j-s = -mcpu=arm1136j-s
CPU_CFLAGS_arm1176jzf-s = -march=armv6 -mtune=arm1176jzf-s CPU_CFLAGS_arm1176jzf-s = -mcpu=arm1176jzf-s
CPU_CFLAGS_cortex-a5 = -march=armv7-a -mtune=cortex-a5 CPU_CFLAGS_cortex-a5 = -mcpu=cortex-a5
CPU_CFLAGS_cortex-a7 = -march=armv7-a -mtune=cortex-a7 CPU_CFLAGS_cortex-a7 = -mcpu=cortex-a7
CPU_CFLAGS_cortex-a8 = -march=armv7-a -mtune=cortex-a8 CPU_CFLAGS_cortex-a8 = -mcpu=cortex-a8
CPU_CFLAGS_cortex-a9 = -march=armv7-a -mtune=cortex-a9 CPU_CFLAGS_cortex-a9 = -mcpu=cortex-a9
CPU_CFLAGS_cortex-a15 = -march=armv7-a -mtune=cortex-a15 CPU_CFLAGS_cortex-a15 = -mcpu=cortex-a15
CPU_CFLAGS_cortex-a53 = -march=armv8-a -mtune=cortex-a53 CPU_CFLAGS_cortex-a53 = -mcpu=cortex-a53
CPU_CFLAGS_fa526 = -march=armv4 -mtune=fa526 CPU_CFLAGS_fa526 = -mcpu=fa526
CPU_CFLAGS_mpcore = -march=armv6k -mtune=mpcore CPU_CFLAGS_mpcore = -mcpu=mpcore
CPU_CFLAGS_xscale = -march=armv5te -mtune=xscale CPU_CFLAGS_xscale = -mcpu=xscale
ifeq ($(CONFIG_SOFT_FLOAT),) ifeq ($(CONFIG_SOFT_FLOAT),)
CPU_CFLAGS_neon = -mfpu=neon CPU_CFLAGS_neon = -mfpu=neon
CPU_CFLAGS_vfp = -mfpu=vfp CPU_CFLAGS_vfp = -mfpu=vfp