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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - X86 speculative load hardening: Bad machine code: Virtual register killed in block, but needed live out."
href="https://bugs.llvm.org/show_bug.cgi?id=39451">39451</a>
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<th>Summary</th>
<td>X86 speculative load hardening: Bad machine code: Virtual register killed in block, but needed live out.
</td>
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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>PC
</td>
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Backend: X86
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>francisvm@yahoo.com
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<th>CC</th>
<td>craig.topper@gmail.com, llvm-bugs@lists.llvm.org
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<p>
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<pre>*** Bad machine code: Virtual register killed in block, but needed live out.
***
- function: test_switch_jumptable
- basic block: %bb.6 entry (0x7ffb3a821f90)
Virtual register %27 is used after the block.
*** Bad machine code: Virtual register defs don't dominate all uses. ***
- function: test_switch_jumptable
- v. register: %27
LLVM ERROR: Found 2 machine code errors.
build/bin/llc -verify-machineinstrs <
test/CodeGen/X86/speculative-load-hardening-indirect.ll
-mtriple=x86_64-unknown-linux-gnu -x86-speculative-load-hardening
-relocation-model pic -data-sections</pre>
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