[llvm] [llvm-exegesis] Add debug option to print per-measurement values (PR #81219)

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``````````bash
git-clang-format --diff c560ce464ae486e86e3d2d9684df3f714317f502 89aee78a9c7819edb12e14a7414ab33515dbe9b0 -- llvm/tools/llvm-exegesis/lib/BenchmarkResult.cpp llvm/tools/llvm-exegesis/lib/BenchmarkResult.h llvm/tools/llvm-exegesis/lib/LatencyBenchmarkRunner.cpp
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View the diff from clang-format here.
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diff --git a/llvm/tools/llvm-exegesis/lib/BenchmarkResult.cpp b/llvm/tools/llvm-exegesis/lib/BenchmarkResult.cpp
index 0d6317f060..8aace51161 100644
--- a/llvm/tools/llvm-exegesis/lib/BenchmarkResult.cpp
+++ b/llvm/tools/llvm-exegesis/lib/BenchmarkResult.cpp
@@ -193,12 +193,12 @@ template <> struct SequenceElementTraits<exegesis::BenchmarkMeasure> {
   static const bool flow = false;
 };
 
-
 template <>
 struct CustomMappingTraits<std::map<exegesis::ValidationEvent, int64_t>> {
   static void inputOne(IO &Io, StringRef KeyStr,
                        std::map<exegesis::ValidationEvent, int64_t> &VI) {
-    Expected<exegesis::ValidationEvent> Key = exegesis::stringToValidationEvent(KeyStr);
+    Expected<exegesis::ValidationEvent> Key =
+        exegesis::stringToValidationEvent(KeyStr);
     if (!Key) {
       Io.setError("Key is not a valid validation event");
       return;
diff --git a/llvm/tools/llvm-exegesis/lib/LatencyBenchmarkRunner.cpp b/llvm/tools/llvm-exegesis/lib/LatencyBenchmarkRunner.cpp
index cb1cd426e9..a9917a29cc 100644
--- a/llvm/tools/llvm-exegesis/lib/LatencyBenchmarkRunner.cpp
+++ b/llvm/tools/llvm-exegesis/lib/LatencyBenchmarkRunner.cpp
@@ -94,7 +94,8 @@ Expected<std::vector<BenchmarkMeasure>> LatencyBenchmarkRunner::runMeasurements(
       return ExpectedCounterValues.takeError();
     ValuesCount = ExpectedCounterValues.get().size();
     if (ValuesCount == 1) {
-      LLVM_DEBUG(dbgs() << "Latency value: " << ExpectedCounterValues.get()[0] << "\n");
+      LLVM_DEBUG(dbgs() << "Latency value: " << ExpectedCounterValues.get()[0]
+                        << "\n");
       AccumulatedValues.push_back(ExpectedCounterValues.get()[0]);
     } else {
       // We'll keep the reading with lowest variance (ie., most stable)

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https://github.com/llvm/llvm-project/pull/81219