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-rw-r--r--debug_counter.h1
-rw-r--r--vm_insnhelper.c6
2 files changed, 6 insertions, 1 deletions
diff --git a/debug_counter.h b/debug_counter.h
index 8b23f17102..597307c833 100644
--- a/debug_counter.h
+++ b/debug_counter.h
@@ -21,6 +21,7 @@ RB_DEBUG_COUNTER(mc_inline_miss_invalidated) // IMC miss by invalidated ME
RB_DEBUG_COUNTER(mc_inline_miss_empty) // IMC miss because prev is empty slot
RB_DEBUG_COUNTER(mc_inline_miss_same_cc) // IMC miss, but same CC
RB_DEBUG_COUNTER(mc_inline_miss_same_cme) // IMC miss, but same CME
+RB_DEBUG_COUNTER(mc_inline_miss_same_def) // IMC miss, but same definition
RB_DEBUG_COUNTER(mc_inline_miss_diff) // IMC miss, different methods
RB_DEBUG_COUNTER(mc_cme_complement) // number of acquiring complement CME
diff --git a/vm_insnhelper.c b/vm_insnhelper.c
index 9cade36fad..ac0f999b81 100644
--- a/vm_insnhelper.c
+++ b/vm_insnhelper.c
@@ -1694,12 +1694,16 @@ rb_vm_search_method_slowpath(VALUE cd_owner, struct rb_call_data *cd, VALUE klas
// empty
RB_DEBUG_COUNTER_INC(mc_inline_miss_empty);
}
- else if (old_cc == cd->cc) {
+ else if (old_cc == cc) {
RB_DEBUG_COUNTER_INC(mc_inline_miss_same_cc);
}
else if (vm_cc_cme(old_cc) == vm_cc_cme(cc)) {
RB_DEBUG_COUNTER_INC(mc_inline_miss_same_cme);
}
+ else if (vm_cc_cme(old_cc) && vm_cc_cme(cc) &&
+ vm_cc_cme(old_cc)->def == vm_cc_cme(cc)->def) {
+ RB_DEBUG_COUNTER_INC(mc_inline_miss_same_def);
+ }
else {
RB_DEBUG_COUNTER_INC(mc_inline_miss_diff);
}