[PATCH] m32r: enable asm code optimization (cde05cf2) · Commits · 戴 / test

Add -O2 option to AFLAGS to enable asm code optimization for m32r. On m32r gas, "-m32r2 -O" option enables assembler's parallel code generation optimization for M32R2 ISA as a default. So, "-no-parallel" option is required explicitly for a cpu core with single instuction issuing, for example, VDEC2. Signed-off-by:

Hirokazu Takata <takata@linux-m32r.org> Signed-off-by:

Andrew Morton <akpm@osdl.org> Signed-off-by:

Linus Torvalds <torvalds@osdl.org>

arch/m32r/Makefile

+3 −3

Original line number	Diff line number	Diff line
		@@ -12,14 +12,14 @@ CFLAGS_MODULE += -mmodel=large

		ifdef CONFIG_CHIP_VDEC2
		cflags-$(CONFIG_ISA_M32R2) += -DNO_FPU -Wa,-bitinst
		aflags-$(CONFIG_ISA_M32R2) += -DNO_FPU -Wa,-bitinst
		aflags-$(CONFIG_ISA_M32R2) += -DNO_FPU -O2 -Wa,-bitinst -Wa,-no-parallel
		else
		cflags-$(CONFIG_ISA_M32R2) += -DNO_FPU -m32r2
		aflags-$(CONFIG_ISA_M32R2) += -DNO_FPU -m32r2
		aflags-$(CONFIG_ISA_M32R2) += -DNO_FPU -m32r2 -O2
		endif

		cflags-$(CONFIG_ISA_M32R) += -DNO_FPU
		aflags-$(CONFIG_ISA_M32R) += -DNO_FPU -Wa,-no-bitinst
		aflags-$(CONFIG_ISA_M32R) += -DNO_FPU -O2 -Wa,-no-bitinst

		CFLAGS += $(cflags-y)
		AFLAGS += $(aflags-y)

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