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| author | Felix Fietkau <nbd@nbd.name> | 2016-08-04 22:42:28 +0200 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2016-08-04 22:53:01 +0200 |
| commit | 002b45368792a04e480db3ca3f23a4aefb787670 (patch) | |
| tree | a3102c435f29d0f1131a30c4ade5016c61b5cbec /target | |
| parent | ecf7671b769fe96f7b5134be442089f8bdba55d2 (diff) | |
| download | openwrt-002b45368792a04e480db3ca3f23a4aefb787670.tar.gz openwrt-002b45368792a04e480db3ca3f23a4aefb787670.tar.bz2 openwrt-002b45368792a04e480db3ca3f23a4aefb787670.zip | |
kernel: add -mtune=34kc to MIPS CFLAGS when building for mips32r2
This provides a good tradeoff across at least 24Kc-74Kc, while also
producing smaller code.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'target')
| -rw-r--r-- | target/linux/generic/patches-4.4/308-mips32r2_tune.patch | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.4/308-mips32r2_tune.patch b/target/linux/generic/patches-4.4/308-mips32r2_tune.patch new file mode 100644 index 0000000000..f4ab89ef28 --- /dev/null +++ b/target/linux/generic/patches-4.4/308-mips32r2_tune.patch @@ -0,0 +1,17 @@ +Add -mtune=34kc to MIPS CFLAGS when building for mips32r2 +This provides a good tradeoff across at least 24Kc-74Kc, while also +producing smaller code. + +Signed-off-by: Felix Fietkau <nbd@nbd.name> + +--- a/arch/mips/Makefile ++++ b/arch/mips/Makefile +@@ -145,7 +145,7 @@ cflags-$(CONFIG_CPU_R4X00) += -march=r46 + cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap + cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \ + -Wa,-mips32 -Wa,--trap +-cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \ ++cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2 -mtune=34kc,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \ + -Wa,-mips32r2 -Wa,--trap + cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap + cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \ |