https://bugs.llvm.org/show_bug.cgi?id=39470
Bug ID: 39470
Summary: [llvm-exegesis] Regression in dual-counter
IssueCounters?
Product: tools
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: llvm-exegesis
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected]
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:
https://reviews.llvm.org/D52779?id=168591#change-UdOsbdBmtWmc
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">
];
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