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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - AArch64 patchpoint implementation fails to clobber lr"
href="https://bugs.llvm.org/show_bug.cgi?id=40240">40240</a>
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<th>Summary</th>
<td>AArch64 patchpoint implementation fails to clobber lr
</td>
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<th>Product</th>
<td>new-bugs
</td>
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<th>Version</th>
<td>7.0
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
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<th>Status</th>
<td>NEW
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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>new bugs
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>manjian2006@gmail.com
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<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>casual implementation:
case TargetOpcode::STACKMAP:
case TargetOpcode::PATCHPOINT:
return emitPatchPoint(MI, BB);
should be:
{
MachineBasicBlock* MBB2 = TargetLoweringBase::emitPatchPoint(MI, MBB);
MachineFunction &MF = *MI.getMF();
MI.addOperand(MF, MachineOperand::CreateReg(AArch64::LR, true, true));
return MBB2;
}</pre>
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