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Shiji Yang
2f44a5177d
GCC generates the same code for 24kc and 34kc. Since we have converted all 34kc targets to the 24kc, it's better to switch kernel -mtune to 24kc to avoid confusing developers. Signed-off-by: Shiji Yang <yangshiji66@outlook.com> Link: https://github.com/openwrt/openwrt/pull/22703 Signed-off-by: Robert Marko <robimarko@gmail.com>
23 lines
1015 B
Diff
23 lines
1015 B
Diff
From: Felix Fietkau <nbd@nbd.name>
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Subject: kernel: add -mtune=24kc 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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@@ -149,7 +149,7 @@ cflags-$(CONFIG_CPU_R4300) += $(call cc-
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cflags-$(CONFIG_CPU_R4X00) += $(call cc-option,-march=r4600,-march=mips3) -Wa,--trap
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cflags-$(CONFIG_CPU_TX49XX) += $(call cc-option,-march=r4600,-march=mips3) -Wa,--trap
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cflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,--trap
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-cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,--trap
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+cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -mtune=24kc -Wa,--trap
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cflags-$(CONFIG_CPU_MIPS32_R5) += -march=mips32r5 -Wa,--trap -modd-spreg
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cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg
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cflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,--trap
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