linux-kernel - ld.lld: warning: lld uses blx instruction, no object with architecture supporting feature detected

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Date:   Wed, 1 Apr 2020 05:20:13 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Dirk Mueller <dmueller@...e.com>
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        linux-kernel@...r.kernel.org, Rob Herring <robh@...nel.org>,
        David Gibson <david@...son.dropbear.id.au>
Subject: ld.lld: warning: lld uses blx instruction, no object with
 architecture supporting feature detected

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   42595ce90b9d4a6b9d8c5a1ea78da4eeaf7e086a
commit: e33a814e772cdc36436c8c188d8c42d019fda639 scripts/dtc: Remove redundant YYLOC global declaration
date:   4 days ago
config: arm-randconfig-a001-20200401 (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 5227fa0c72ce55927cf4849160acb00442489937)
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout e33a814e772cdc36436c8c188d8c42d019fda639
        # save the attached .config to linux build tree
        COMPILER=clang make.cross ARCH=arm 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> ld.lld: warning: lld uses blx instruction, no object with architecture supporting feature detected

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment ".config.gz" of type "application/gzip" (27525 bytes)