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308-mips32r2_tune.patch 973 B

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  1. Add -mtune=34kc to MIPS CFLAGS when building for mips32r2
  2. This provides a good tradeoff across at least 24Kc-74Kc, while also
  3. producing smaller code.
  4. Signed-off-by: Felix Fietkau <nbd@nbd.name>
  5. --- a/arch/mips/Makefile
  6. +++ b/arch/mips/Makefile
  7. @@ -145,7 +145,7 @@ cflags-$(CONFIG_CPU_R4X00) += -march=r46
  8. cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
  9. cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
  10. -Wa,-mips32 -Wa,--trap
  11. -cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
  12. +cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2 -mtune=34kc,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
  13. -Wa,-mips32r2 -Wa,--trap
  14. cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap
  15. cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \