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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [llvm-exegesis] Regression in dual-counter IssueCounters?"
href="https://bugs.llvm.org/show_bug.cgi?id=39470">39470</a>
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<th>Summary</th>
<td>[llvm-exegesis] Regression in dual-counter IssueCounters?
</td>
</tr>
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<th>Product</th>
<td>tools
</td>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<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>llvm-exegesis
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>lebedev.ri@gmail.com
</td>
</tr>
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<th>CC</th>
<td>clement.courbet@gmail.com, gchatelet@google.com, llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>BdVer2PfmCounters:
let IssueCounters = [
PfmIssueCounter<"PdFPU0", "dispatched_fpu_ops:ops_pipe0 +
dispatched_fpu_ops:ops_dual_pipe0">,
PfmIssueCounter<"PdFPU1", "dispatched_fpu_ops:ops_pipe1 +
dispatched_fpu_ops:ops_dual_pipe1">,
PfmIssueCounter<"PdFPU2", "dispatched_fpu_ops:ops_pipe2 +
dispatched_fpu_ops:ops_dual_pipe2">,
PfmIssueCounter<"PdFPU3", "dispatched_fpu_ops:ops_pipe3 +
dispatched_fpu_ops:ops_dual_pipe3">
];
$ ./bin/llvm-exegesis -num-repetitions=10000 -mode=uops -opcode-name=VFRCZPSrr
Check generated assembly with: /usr/bin/objdump -d /tmp/snippet-624fd8.o
invalid parameters - cannot create event dispatched_fpu_ops:ops_pipe0 +
dispatched_fpu_ops:ops_dual_pipe0
LLVM ERROR: invalid perf event dispatched_fpu_ops:ops_pipe0 +
dispatched_fpu_ops:ops_dual_pipe0
But i'm quite sure it worked previously:
<a href="https://reviews.llvm.org/D52779?id=168591#change-UdOsbdBmtWmc">https://reviews.llvm.org/D52779?id=168591#change-UdOsbdBmtWmc</a>
This works:
let IssueCounters = [
PfmIssueCounter<"PdFPU0", "dispatched_fpu_ops:ops_pipe0">,
PfmIssueCounter<"PdFPU1", "dispatched_fpu_ops:ops_pipe1">
];
This does not:
let IssueCounters = [
PfmIssueCounter<"PdFPU0", "dispatched_fpu_ops:ops_pipe0 +
dispatched_fpu_ops:ops_pipe1">
];</pre>
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