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23 lines
1.1 KiB
Diff
23 lines
1.1 KiB
Diff
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From: Felix Fietkau <nbd@nbd.name>
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Subject: kernel: add -mtune=34kc to MIPS CFLAGS when building for mips32r2
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This provides a good tradeoff across at least 24Kc-74Kc, while also
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producing smaller code.
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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---
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arch/mips/Makefile | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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--- a/arch/mips/Makefile
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+++ b/arch/mips/Makefile
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@@ -162,7 +162,7 @@ cflags-$(CONFIG_CPU_R4X00) += -march=r46
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cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
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cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
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-Wa,-mips32 -Wa,--trap
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-cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
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+cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2 -mtune=34kc,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
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-Wa,-mips32r2 -Wa,--trap
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cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg
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cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
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