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

[Amir Ayupov via llvm-commits]

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@@ -1555,7 +1581,8 @@ std::error_code DataAggregator::parseBranchEvents() {
     }
 
     NumEntries += Sample.LBR.size();
-    if (BAT && Sample.LBR.size() == 32 && !NeedsSkylakeFix) {
+    if (this->BC->isX86() && BAT && Sample.LBR.size() == 32 &&
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aaupov wrote:

Note to self to drop this

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