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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - r372893 hangs when building"
href="https://bugs.llvm.org/show_bug.cgi?id=43455">43455</a>
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<th>Summary</th>
<td>r372893 hangs when building
</td>
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<th>Product</th>
<td>new-bugs
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>new bugs
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>samitolvanen@google.com
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<th>CC</th>
<td>e.menezes@samsung.com, htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org, ndesaulniers@google.com, peter@pcc.me.uk
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<p>
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<pre>Starting with r372893 ("[CodeGen] Replace -max-jump-table-size with
-max-jump-table-targets"), LLD hangs when building the Linux kernel with CFI.
Steps to reproduce:
$ git clone <a href="https://github.com/samitolvanen/linux.git">https://github.com/samitolvanen/linux.git</a>
$ cd linux
$ git checkout clang-cfi
$ export PATH=/path/to/llvm/bin:$PATH
$ make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- CC=clang LD=ld.lld defconfig
$ ./scripts/config -e LTO_CLANG -e THINLTO -e CFI_CLANG
$ make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- CC=clang LD=ld.lld -j110
(press enter a few times to accept default configs)
With r372892, this completes in ~3 minutes on my system. With r372893, LLD
hangs when linking vmlinux.o (waited for >1h).</pre>
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