Hu Guenter, > -----Original Message----- > From: linux-snps-arc [mailto:linux-snps-arc-bounces at lists.infradead.org] On Behalf Of Guenter Roeck > Sent: Wednesday, September 12, 2018 7:58 PM > To: Vineet Gupta <vineet.gupta1 at synopsys.com> > Cc: linux-snps-arc at lists.infradead.org; linux-kernel at vger.kernel.org > Subject: Re: [PATCH] ARCv2: build: use mcpu=hs38 iso generic mcpu=archs > > Hi, > > On Fri, Sep 07, 2018 at 03:13:10PM -0700, Vineet Gupta wrote: > > 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 at synopsys.com> > > This patch causes my arc2 test builds to fail > > Building arc:axs103_defconfig ... failed > -------------- > Error log: > > standard input}: Assembler messages: > {standard input}:154: Error: inappropriate arguments for opcode 'st' > {standard input}:157: Error: Insn j_s has a jump/branch instruction j_s in its delay slot. > {standard input}:186: Error: inappropriate arguments for opcode 'st' > make[3]: *** [net/core/dev.o] Error 1 > make[2]: *** [net/core] Error 2 > > Building arc:nsim_hs_smp_defconfig ... failed > -------------- > Error log: > {standard input}: Assembler messages: > {standard input}:218: Error: inappropriate arguments for opcode 'st' > {standard input}:9329: Error: inappropriate arguments for opcode 'st' > > Building arc:vdk_hs38_smp_defconfig ... failed > -------------- > Error log: > > {standard input}: Assembler messages: > {standard input}:9629: Error: inappropriate arguments for opcode 'st' > {standard input}:9883: Error: inappropriate arguments for opcode 'st' > > I use a toolchain based on gcc 7.3.0 and binutils 2.30. What version > of gcc and binutils do I need for the builds to complete ? I would strongly recommend to use GCC 8.2+ for ARC as there were quite some improvements and fixes done for ARC. You may use master branch of Crosstool-NG for building uClibc multilib toolchain for ARC based on Binutils 2.31.1 and GCC 8.2.0. Just say "./ct-ng arc-multilib-linux-uclibc" for that. For me freshly-built tools were able to build Vineet's today's "for-curr" tree with mentioned patch perfectly fine. -Alexey
