From 6f0ede327e95d265539bf1ec6f7e130560f25baf Mon Sep 17 00:00:00 2001
From: Daniel Lemire <daniel@lemire.me>
Date: Wed, 31 Jan 2024 15:15:07 -0500
Subject: [PATCH] exposing branch misses under macos (#587)

* exposing branch misses under macos

* formatting
---
 benchmarks/performancecounters/apple_arm_events.h | 2 +-
 benchmarks/performancecounters/event_counter.h    | 7 ++++++-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/benchmarks/performancecounters/apple_arm_events.h b/benchmarks/performancecounters/apple_arm_events.h
index 088fa1728..608817277 100644
--- a/benchmarks/performancecounters/apple_arm_events.h
+++ b/benchmarks/performancecounters/apple_arm_events.h
@@ -1102,7 +1102,7 @@ struct AppleEvents {
         printf("%14s: %llu\n", alias->alias, val);
     }*/
     return performance_counters{
-        counters_0[counter_map[0]], counters_0[counter_map[3]],
+        counters_0[counter_map[0]], counters_0[counter_map[2]],
         counters_0[counter_map[2]], counters_0[counter_map[1]]};
   }
 };
diff --git a/benchmarks/performancecounters/event_counter.h b/benchmarks/performancecounters/event_counter.h
index 63e605690..4a1e5eca3 100644
--- a/benchmarks/performancecounters/event_counter.h
+++ b/benchmarks/performancecounters/event_counter.h
@@ -35,6 +35,8 @@ struct event_count {
   enum event_counter_types {
     CPU_CYCLES,
     INSTRUCTIONS,
+    BRANCH_MISSES = 2,
+    BRANCH = 4
   };
 
   double elapsed_sec() const {
@@ -49,7 +51,10 @@ struct event_count {
   double instructions() const {
     return static_cast<double>(event_counts[INSTRUCTIONS]);
   }
-
+  double branches() const { return static_cast<double>(event_counts[BRANCH]); }
+  double branch_misses() const {
+    return static_cast<double>(event_counts[BRANCH_MISSES]);
+  }
   event_count& operator=(const event_count& other) {
     this->elapsed = other.elapsed;
     this->event_counts = other.event_counts;