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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - r305468 causes 'Assertion failed: (MemVT.getScalarType().bitsLT(VT.getScalarType()) && "Should only be an extending load, not truncating!"), function getLoad'"
href="https://bugs.llvm.org/show_bug.cgi?id=33475">33475</a>
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<th>Summary</th>
<td>r305468 causes 'Assertion failed: (MemVT.getScalarType().bitsLT(VT.getScalarType()) && "Should only be an extending load, not truncating!"), function getLoad'
</td>
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<tr>
<th>Product</th>
<td>libraries
</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>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Common Code Generator Code
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>ahmed.bougacha@gmail.com
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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</tr></table>
<p>
<div>
<pre>With code such as:
target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
target triple = "arm64-apple-ios10.0.0"
define void @repro(i8* %p0, i8* %p1) noimplicitfloat {
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %p0, i8* %p1, i64 32, i32 4, i1
false)
ret void
}
declare void @llvm.memcpy.p0i8.p0i8.i64(i8*, i8*, i64, i32, i1)
(note the "noimplicitfloat"), we end up with an i128 merged operation, and
since r305468, we try to build an extload from i128 to i64 (because that's the
type to which i128 is legalizable), which is impossible.</pre>
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