target/linux/generic/pending-4.14/308-mips32r2_tune.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Subject: kernel: add -mtune=34kc to MIPS CFLAGS when building for mips32r2
   3
   4 This provides a good tradeoff across at least 24Kc-74Kc, while also
   5 producing smaller code.
   6
   7 Signed-off-by: Felix Fietkau <nbd@nbd.name>
   8 ---
   9  arch/mips/Makefile | 2 +-
  10  1 file changed, 1 insertion(+), 1 deletion(-)
  11
  12 --- a/arch/mips/Makefile
  13 +++ b/arch/mips/Makefile
  14 @@ -166,7 +166,7 @@ cflags-$(CONFIG_CPU_VR41XX) += -march=r4
  15  cflags-$(CONFIG_CPU_R4X00)     += -march=r4600 -Wa,--trap
  16  cflags-$(CONFIG_CPU_TX49XX)    += -march=r4600 -Wa,--trap
  17  cflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,--trap
  18 -cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,--trap
  19 +cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -mtune=34kc -Wa,--trap
  20  cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg
  21  cflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,--trap
  22  cflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,--trap