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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Arguments converted to WASM .S incorrectly by LLC"
href="https://llvm.org/bugs/show_bug.cgi?id=27327">27327</a>
</td>
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<tr>
<th>Summary</th>
<td>Arguments converted to WASM .S incorrectly by LLC
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
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<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>Windows NT
</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>
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<th>Reporter</th>
<td>gareth_morgan77@hotmail.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=16207" name="attach_16207" title="The input LL and output S">attachment 16207</a> <a href="attachment.cgi?id=16207&action=edit" title="The input LL and output S">[details]</a></span>
The input LL and output S
The attached .LL file will be incorrectly converted to .s by WASM back end.
Specifically on line 3566
%call16 = call zeroext i1
@_ZN22MarchingSquaresFunctorI4Vec414MSVec4AccessorE3RunERKiS4_(%class.MarchingSquaresFunctor*
nonnull %f, i32* nonnull dereferenceable(4) %i, i32* nonnull dereferenceable(4)
%j)
This gets converted to this code in the .s. Where the constants 4 and 8 are
passed in as addresses. These should be __stackPointer+4 and __stackPointer+8:
i32.const $18=, 4
i32.add $18=, $18, $18
i32.const $19=, 8
i32.add $19=, $18, $19
i32.call $discard=,
_ZN22MarchingSquaresFunctorI4Vec414MSVec4AccessorE3RunERKiS4_@FUNCTION, $1,
$18, $19
Compiled with following command line:
LLC Ashara.opt.ll -o Ashara.s -mtriple="wasm32-unknown-unknown"</pre>
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