Add counters for tracking invalidations

yjit.rb

@@ -177,6 +177,9 @@ module YJIT
       yjit_ratio_pct = 100.0 * retired_in_yjit.to_f / total_insns_count
 
       $stderr.puts "compiled_iseq_count:   " + ("%10d" % stats[:compiled_iseq_count])
+      $stderr.puts "compiled_block_count:  " + ("%10d" % stats[:compiled_block_count])
+      $stderr.puts "invalidation_count:    " + ("%10d" % stats[:invalidation_count])
+      $stderr.puts "constant_state_bumps:  " + ("%10d" % stats[:constant_state_bumps])
       $stderr.puts "inline_code_size:      " + ("%10d" % stats[:inline_code_size])
       $stderr.puts "outlined_code_size:    " + ("%10d" % stats[:outlined_code_size])
 

yjit_core.c

@@ -557,6 +557,10 @@ add_block_version(blockid_t blockid, block_t* block)
             RB_OBJ_WRITTEN(iseq, Qundef, object);
         }
     }
+
+#if YJIT_STATS
+    yjit_runtime_counters.compiled_block_count++;
+#endif
 }
 
 // Create a new outgoing branch entry for a block
@@ -1144,6 +1148,10 @@ invalidate_block_version(block_t *block)
 
     yjit_free_block(block);
 
+#if YJIT_STATS
+    yjit_runtime_counters.invalidation_count++;
+#endif
+
     // fprintf(stderr, "invalidation done\n");
 }
 

yjit_iface.c

@@ -591,6 +591,9 @@ rb_yjit_constant_state_changed(void)
 {
     if (blocks_assuming_stable_global_constant_state) {
         st_foreach(blocks_assuming_stable_global_constant_state, block_invalidation_iterator, 0);
+#if YJIT_STATS
+        yjit_runtime_counters.constant_state_bumps++;
+#endif
     }
 }
 

yjit_iface.h

@@ -87,6 +87,9 @@ YJIT_DECLARE_COUNTERS(
 
     vm_insns_count,
     compiled_iseq_count,
+    compiled_block_count,
+    invalidation_count,
+    constant_state_bumps,
 
     expandarray_splat,
     expandarray_postarg,