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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - arm: Assertion failed: (isReg() && "This is not a register operand!"), function getReg, file include/llvm/MC/MCInst.h, line 66."
href="https://bugs.llvm.org/show_bug.cgi?id=32726">32726</a>
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<th>Summary</th>
<td>arm: Assertion failed: (isReg() && "This is not a register operand!"), function getReg, file include/llvm/MC/MCInst.h, line 66.
</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>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
</td>
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<th>Component</th>
<td>new bugs
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>dimitry@andric.com
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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</tr></table>
<p>
<div>
<pre>This is an assertion somewhere in Firefox's webrtc code, reported in
<a href="https://bugs.freebsd.org/218782">https://bugs.freebsd.org/218782</a>, which occurs both in 4.0.0 and trunk 300422.
Reduced test case in C++:
// clang -cc1 -triple arm-- -S webrtc-minimized.cpp
class A {
int m_fn1();
enum { kNumProbs = 12 };
static const unsigned short prob_uw16_[];
};
const unsigned short A::prob_uw16_[] = {205, 410};
char ProcessFrame_quant_uw8[4];
int ProcessFrame_prob_idx_uw32, ProcessFrame_width;
int A::m_fn1() {
int y_sub_size = ProcessFrame_width;
unsigned char *y_sorted = new unsigned char;
if (ProcessFrame_width)
for (int i = 0; i < kNumProbs; i++) {
ProcessFrame_prob_idx_uw32 = y_sub_size * prob_uw16_[i];
ProcessFrame_quant_uw8[i] = y_sorted[ProcessFrame_prob_idx_uw32];
}
for (;;)
;
}</pre>
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