From 00a99339f0a30b593d06f31499c4bbd965979567 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Fri, 7 Sep 2018 15:13:10 -0700 Subject: [PATCH] ARCv2: build: use mcpu=hs38 iso generic mcpu=archs helps gcc with better instruction selections such as 64-bit multiply MPYD before ------ 82c34b58 : 82c34b58: ld r2,[0x83068d00] 82c34b60: add_s r2,r2,0x7530 82c34b66: mov_s r0,0x989680 82c34b6c: mpymu r5,r2,r0 82c34b70: mpy r4,r2,r0 82c34b74: mov_s r0,r4 82c34b76: j_s.d [blink] 82c34b78: mov_s r1,r5 82c34b7a: nop_s after ------ 82c34b7c : 82c34b7c: ld r0,[0x83064d00] 82c34b84: add_s r0,r0,0x7530 82c34b8a: mpydu r0,r0,0x989680 82c34b92: j_s [blink] Signed-off-by: Vineet Gupta --- arch/arc/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arc/Makefile b/arch/arc/Makefile index 99cce77..dcc0f0c 100644 --- a/arch/arc/Makefile +++ b/arch/arc/Makefile @@ -18,7 +18,7 @@ KBUILD_DEFCONFIG := nsim_700_defconfig cflags-y += -fno-common -pipe -fno-builtin -mmedium-calls -D__linux__ cflags-$(CONFIG_ISA_ARCOMPACT) += -mA7 -cflags-$(CONFIG_ISA_ARCV2) += -mcpu=archs +cflags-$(CONFIG_ISA_ARCV2) += -mcpu=hs38 is_700 = $(shell $(CC) -dM -E - < /dev/null | grep -q "ARC700" && echo 1 || echo 0) -- 2.7.4