diff options
Diffstat (limited to 'target/linux/generic/patches-4.9/308-mips32r2_tune.patch')
| -rw-r--r-- | target/linux/generic/patches-4.9/308-mips32r2_tune.patch | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.9/308-mips32r2_tune.patch b/target/linux/generic/patches-4.9/308-mips32r2_tune.patch new file mode 100644 index 0000000000..f2dbdac911 --- /dev/null +++ b/target/linux/generic/patches-4.9/308-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 +@@ -148,7 +148,7 @@ 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) \ |