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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Register Coalescer failed with Assertion `isReg() && "This is not a register operand!"'"
href="https://bugs.llvm.org/show_bug.cgi?id=50919">50919</a>
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<th>Summary</th>
<td>Register Coalescer failed with Assertion `isReg() && "This is not a register operand!"'
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<th>Product</th>
<td>libraries
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<th>Version</th>
<td>trunk
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>Windows NT
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>enhancement
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Backend: AArch64
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>guopeilin1@huawei.com
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<th>CC</th>
<td>arnaud.degrandmaison@arm.com, llvm-bugs@lists.llvm.org, smithp352@googlemail.com, Ties.Stuij@arm.com
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<pre>Created <span class=""><a href="attachment.cgi?id=24984" name="attach_24984" title="test case">attachment 24984</a> <a href="attachment.cgi?id=24984&action=edit" title="test case">[details]</a></span>
test case
llc -mtriple=aarch64-arm-none-eabi -run-pass=simple-register-coalescing
test.mir
Failed with the following stack dump:
llc: llvm-project/llvm/include/llvm/CodeGen/MachineOperand.h:359:
llvm::Register llvm::MachineOperand::getReg() const: Assertion `isReg() &&
"This is not a register operand!"' failed.
And this is caused by Register Coalescer in the following code:</pre>
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