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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - ICE with -O1 on valid code: fatal error: error in backend: cannot lower memory intrinsic in address space 256"
href="https://bugs.llvm.org/show_bug.cgi?id=50837">50837</a>
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<tr>
<th>Summary</th>
<td>ICE with -O1 on valid code: fatal error: error in backend: cannot lower memory intrinsic in address space 256
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>C
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>cnsun@uwaterloo.ca
</td>
</tr>
<tr>
<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
</td>
</tr></table>
<p>
<div>
<pre>$ clang-trunk -v
clang version 13.0.0 (<a href="https://github.com/llvm/llvm-project.git">https://github.com/llvm/llvm-project.git</a>
5c8659801a4976ef2b327f4071d98086efd42a36)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/cnsun/usr/bin
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/9
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64
$ cat mutant.c
i(char __seg_gs *arr, c, n) {
for (long i = 0; i < n; ++i)
arr[i] = c;
}
$ clang-trunk -O1 mutant.c
mutant.c:1:23: warning: type specifier missing, defaults to 'int'
[-Wimplicit-int]
i(char __seg_gs *arr, c, n) {
^
mutant.c:1:26: warning: type specifier missing, defaults to 'int'
[-Wimplicit-int]
i(char __seg_gs *arr, c, n) {
^
mutant.c:1:1: warning: type specifier missing, defaults to 'int'
[-Wimplicit-int]
i(char __seg_gs *arr, c, n) {
^
mutant.c:4:1: warning: non-void function does not return a value
[-Wreturn-type]
}
^
fatal error: error in backend: cannot lower memory intrinsic in address space
256
clang-13: error: clang frontend command failed with exit code 70 (use -v to see
invocation)
clang version 13.0.0 (<a href="https://github.com/llvm/llvm-project.git">https://github.com/llvm/llvm-project.git</a>
5c8659801a4976ef2b327f4071d98086efd42a36)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/cnsun/usr/bin
clang-13: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-13: note: diagnostic msg: /tmp/mutant-1bdfcf.c
clang-13: note: diagnostic msg: /tmp/mutant-1bdfcf.sh
clang-13: note: diagnostic msg:
********************</pre>
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