ARC: remove gcc mpy heuristics
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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@ -25,7 +25,6 @@ ifdef CONFIG_ARC_CURR_IN_REG
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LINUXINCLUDE += -include ${src}/arch/arc/include/asm/current.h
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endif
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upto_gcc42 := $(call cc-ifversion, -le, 0402, y)
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upto_gcc44 := $(call cc-ifversion, -le, 0404, y)
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atleast_gcc44 := $(call cc-ifversion, -ge, 0404, y)
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atleast_gcc48 := $(call cc-ifversion, -ge, 0408, y)
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@ -60,25 +59,11 @@ ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
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# --build-id w/o "-marclinux". Default arc-elf32-ld is OK
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ldflags-$(upto_gcc44) += -marclinux
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ARC_LIBGCC := -mA7
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cflags-$(CONFIG_ARC_HAS_HW_MPY) += -multcost=16
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ifndef CONFIG_ARC_HAS_HW_MPY
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cflags-y += -mno-mpy
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# newlib for ARC700 assumes MPY to be always present, which is generally true
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# However, if someone really doesn't want MPY, we need to use the 600 ver
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# which coupled with -mno-mpy will use mpy emulation
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# With gcc 4.4.7, -mno-mpy is enough to make any other related adjustments,
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# e.g. increased cost of MPY. With gcc 4.2.1 this had to be explicitly hinted
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ifeq ($(upto_gcc42),y)
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ARC_LIBGCC := -marc600
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cflags-y += -multcost=30
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endif
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endif
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LIBGCC := $(shell $(CC) $(ARC_LIBGCC) $(cflags-y) --print-libgcc-file-name)
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LIBGCC := $(shell $(CC) $(cflags-y) --print-libgcc-file-name)
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# Modules with short calls might break for calls into builtin-kernel
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KBUILD_CFLAGS_MODULE += -mlong-calls
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