From: David S. Miller Date: Thu, 14 Feb 2008 08:58:44 +0000 (-0800) Subject: [SPARC64]: Add -mtune=ultrasparc3 if possible. X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=966d905634de4433cea465fdcea19503c4ae260f;p=deliverable%2Flinux.git [SPARC64]: Add -mtune=ultrasparc3 if possible. This gives better heuristics for the cost of a multiply (fixed 5 cycles), rather than the 'ultrasparc' setting (variable, and unpredictable if the second argument is non-constant). Example code size savings: text data bss dec hex filename 3823690 304040 448880 4576610 45d562 vmlinux 3824521 304040 448880 4577441 45d8a1 vmlinux.orig Signed-off-by: David S. Miller --- diff --git a/arch/sparc64/Makefile b/arch/sparc64/Makefile index 848e33410b43..f0c22f826982 100644 --- a/arch/sparc64/Makefile +++ b/arch/sparc64/Makefile @@ -17,6 +17,7 @@ LDFLAGS := -m elf64_sparc KBUILD_CFLAGS += -m64 -pipe -mno-fpu -mcpu=ultrasparc -mcmodel=medlow \ -ffixed-g4 -ffixed-g5 -fcall-used-g7 -Wno-sign-compare \ -Wa,--undeclared-regs +KBUILD_CFLAGS += $(call cc-option,-mtune=ultrasparc3) KBUILD_AFLAGS += -m64 -mcpu=ultrasparc -Wa,--undeclared-regs ifeq ($(CONFIG_MCOUNT),y)