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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - At least one condition is wrong (same conditional expr of if/else if) (llvm/lib/CodeGen/GlobalISel.cpp:1614 <=> 1617)"
href="https://bugs.llvm.org/show_bug.cgi?id=46882">46882</a>
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<th>Summary</th>
<td>At least one condition is wrong (same conditional expr of if/else if) (llvm/lib/CodeGen/GlobalISel.cpp:1614 <=> 1617)
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<th>Product</th>
<td>libraries
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>All
</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>GlobalISel
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>info@ustchcs.com
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org, quentin.colombet@gmail.com
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=23784" name="attach_23784" title="tool-report-screenshot">attachment 23784</a> <a href="attachment.cgi?id=23784&action=edit" title="tool-report-screenshot">[details]</a></span>
tool-report-screenshot
The use of if (Condition) {...} else if (Condition) {...} pattern should be
avoided.
(commit:23d6525cbdc9de7cbfe7640d1e9e4f25a0c5dd85)
llvm/lib/CodeGen/GlobalISel.cpp:
1574 LegalizerHelper::LegalizeResult
1575 LegalizerHelper::widenScalarExtract(MachineInstr &MI, unsigned TypeIdx,
1576 LLT WideTy) {
...
1612 // Do a shift in the source type.
1613 LLT ShiftTy = SrcTy;
1614 if (WideTy.getSizeInBits() > SrcTy.getSizeInBits()) {
1615 Src = MIRBuilder.buildAnyExt(WideTy, Src);
1616 ShiftTy = WideTy;
1617 } else if (WideTy.getSizeInBits() > SrcTy.getSizeInBits())
1618 return UnableToLegalize;
1619
1620 auto LShr = MIRBuilder.buildLShr(
1621 ShiftTy, Src, MIRBuilder.buildConstant(ShiftTy, Offset));
1622 MIRBuilder.buildTrunc(DstReg, LShr);
1623 MI.eraseFromParent();
1624 return Legalized;
1625 }
...
1651 }
Reported by: Ustchcs Toolsets Bugfinder
(bugfinder-2.2: The use of if (Condition) {...} else if (Condition) {...}
pattern should be avoided.)</pre>
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