helps gcc with better instruction selections such as 64-bit multiply MPYD
before
------
82c34b58 <sched_clock>:
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 <sched_clock>:
82c34b7c: ld r0,[0x83064d00]
82c34b84: add_s r0,r0,0x7530
82c34b8a: mpydu r0,r0,0x989680
82c34b92: j_s [blink]
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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)