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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - WebAssembly backend crashes with "cannot select" on AtomicLoad"
href="https://llvm.org/bugs/show_bug.cgi?id=27124">27124</a>
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<th>Summary</th>
<td>WebAssembly backend crashes with "cannot select" on AtomicLoad
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Backend: WebAssembly
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>alonzakai@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=16124" name="attach_16124" title="llvm ir">attachment 16124</a> <a href="attachment.cgi?id=16124&action=edit" title="llvm ir">[details]</a></span>
llvm ir
STR:
llc cmpxchg_volatile.ll -march=wasm32 -filetype=asm
LLVM ERROR: Cannot select: 0xa778bf0: i32,ch = AtomicLoad<Volatile LD1[%12]>
0xa754a38, 0xa7788f0
0xa7788f0: i32,ch = CopyFromReg 0xa754a38, Register:i32 %vreg0
0xa778af0: i32 = Register %vreg0
In function: _Z7do_testIVNSt3__16atomicIcEEcEvv
This affects building "hello world" using iostream.</pre>
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