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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - ARMDisassembler.cpp - DecodeGPRPairRegisterClass - always false condition"
href="https://bugs.llvm.org/show_bug.cgi?id=41660">41660</a>
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<th>Summary</th>
<td>ARMDisassembler.cpp - DecodeGPRPairRegisterClass - always false condition
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<th>Product</th>
<td>libraries
</td>
</tr>
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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>Windows NT
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Backend: ARM
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>llvm-dev@redking.me.uk
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org, peter.smith@linaro.org, Ties.Stuij@arm.com
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<th>Blocks</th>
<td>41655
</td>
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<p>
<div>
<pre>Reported in <a href="https://www.viva64.com/en/b/0629/">https://www.viva64.com/en/b/0629/</a>
static DecodeStatus DecodeGPRPairRegisterClass(MCInst &Inst, unsigned RegNo,
uint64_t Address, const void *Decoder) {
DecodeStatus S = MCDisassembler::Success;
if (RegNo > 13)
return MCDisassembler::Fail;
if ((RegNo & 1) || RegNo == 0xe)
S = MCDisassembler::SoftFail;
....
}
(RegNo == 0xe) can never be true as we've already returned if (RegNo > 13).</pre>
</div>
</p>
<div id="referenced">
<hr style="border: 1px dashed #969696">
<b>Referenced Bugs:</b>
<ul>
<li>
[<a class="bz_bug_link
bz_status_NEW "
title="NEW - Finding Bugs in LLVM 8 with PVS-Studio"
href="https://bugs.llvm.org/show_bug.cgi?id=41655">Bug 41655</a>] Finding Bugs in LLVM 8 with PVS-Studio
</li>
</ul>
</div>
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