Looks like there is a bug. Smull with the scalar operand as the last operand only supports the first SIMD 16 registers (0-15). Without a testcase it is hard to say if it is a bug in the opencv or that compiler.
NOTE GCC 4.8.5 is not really supported upstream either. I know RedHat supports this version of the compiler for RHEL 7; maybe you could get them to get a fix for you. Thanks, Andrew -----Original Message----- From: linaro-toolchain [mailto:linaro-toolchain-boun...@lists.linaro.org] On Behalf Of xinliang Sent: Monday, January 21, 2019 6:31 PM To: Christophe Lyon <christophe.l...@linaro.org> Cc: tiantao (H) <tiant...@huawei.com>; yeguanhua <yeguan...@huawei.com>; sam.yan...@huawei.com; Linaro Toolchain <linaro-toolchain@lists.linaro.org>; Martin Stadtler <martin.stadt...@linaro.org> Subject: [EXT] Re: Any 4.8.5 cross compile toolchain? External Email ---------------------------------------------------------------------- On 2019/1/10 20:05, Christophe Lyon wrote: > On Thu, 10 Jan 2019 at 08:01, xinliang <z.liuxinli...@hisilicon.com> wrote: >> >> >> On 2019/1/9 17:23, Christophe Lyon wrote: >>> On Wed, 9 Jan 2019 at 10:18, xinliang <z.liuxinli...@hisilicon.com> wrote: >>>> Hi Martin and Linaro-toolchain team, We want to use 4.8.5 cross >>>> compile toolchain to build ko. >>>> But we can't find such version on the release site[1]. >>>> Is there a 4.8.5 cross compile toolchain? >>>> >>>> >>> Hi Xinliang, >>> >>> Not anymore... as you can see on the release site, our last 4.9 >>> toolchain was released 2 years ago. At present, only gcc-7 and 8 are >>> maintained, >>> gcc-6 last release from the FSF was made a few months ago, and our >>> last gcc-linaro-6 release should be out within a few days. >>> >>> It you really want to do some archaeology, maybe such old releases >>> are available on the old launchpad site? >> Ok, thanks for replying us. You mean this site[2]? We also find 4.8 >> from linaro archive site[3]. >> The reason why we want to use 4.8.5 cross compiler to build ko is >> that we run things in CentOS 7.6 which got an old 4.8.5 gcc. >> If we use a new cross compiler such as gcc 7, the built ko will be >> unusable. And the used by count is a very large number. >> >> [2] https://launchpad.net/linaro-toolchain-binaries/+download >> [3] >> https://releases.linaro.org/archive/15.06/components/toolchain/binari >> es/4.8/ Christophe, we use this 4.8.5 cross compiler to build opencv howerver it got error: /tmp/ccDYJmrw.s:65: Error: register number out of range 0 to 15 at operand 3 -- `smull v2.4s,v0.4h,v21.h[0]' /tmp/ccDYJmrw.s:72: Error: register number out of range 0 to 15 at operand 3 -- `smull v3.4s,v1.4h,v21.h[0]' Does this 4.8.5 gcc support neon? > Indeed [3] should be OK. > >>> Christophe >>> >>>> [1] https://releases.linaro.org/components/toolchain/gcc-linaro/ >>>> Best, >>>> Xinliang >>>> >>>> _______________________________________________ >>>> linaro-toolchain mailing list >>>> linaro-toolchain@lists.linaro.org >>>> https://lists.linaro.org/mailman/listinfo/linaro-toolchain >>> . >>> >> > . > _______________________________________________ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org https://lists.linaro.org/mailman/listinfo/linaro-toolchain _______________________________________________ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org https://lists.linaro.org/mailman/listinfo/linaro-toolchain
