[llvm-branch-commits] [llvm] Add initial support for SPE brstack format (PR #129231)

[Paschalis Mpeis via llvm-branch-commits]

================
@@ -180,13 +178,16 @@ void DataAggregator::start() {
 
   if (opts::ArmSPE) {
     if (!opts::BasicAggregation) {
-      errs() << "PERF2BOLT-ERROR: Arm SPE mode is combined only with "
-                "BasicAggregation.\n";
-      exit(1);
+      // pid    from_ip      to_ip        predicted?
+      // 12345  0x123/0x456/P/-/-/8/RET/-
+      launchPerfProcess("SPE branch events", MainEventsPPI,
+                        "script -F pid,brstack --itrace=bl",
+                        /*Wait = */ false);
+    } else {
+      launchPerfProcess("SPE brstack events", MainEventsPPI,
----------------
paschalis-mpeis wrote:


```suggestion
      launchPerfProcess("SPE branch events (non-lbr)", MainEventsPPI,
```

https://github.com/llvm/llvm-project/pull/129231
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