https://git.ruby-lang.org/ruby.git/commit/?id=0bd025ad69

From 0bd025ad6991f2159ef8bd596a79c89b79f5cc3e Mon Sep 17 00:00:00 2001
From: Takashi Kokubun <takashikkbn@g...>
Date: Thu, 28 May 2020 22:45:27 -0700
Subject: Add a debug_counter for JIT cancel on leave


diff --git a/debug_counter.h b/debug_counter.h
index c043531..f6223fb 100644
--- a/debug_counter.h
+++ b/debug_counter.h
@@ -333,6 +333,7 @@ RB_DEBUG_COUNTER(mjit_cancel_exivar_inline) https://github.com/ruby/ruby/blob/trunk/debug_counter.h#L333
 RB_DEBUG_COUNTER(mjit_cancel_send_inline)
 RB_DEBUG_COUNTER(mjit_cancel_opt_insn) /* CALL_SIMPLE_METHOD */
 RB_DEBUG_COUNTER(mjit_cancel_invalidate_all)
+RB_DEBUG_COUNTER(mjit_cancel_leave)
 
 /* rb_mjit_unit_list length */
 RB_DEBUG_COUNTER(mjit_length_unit_queue)
diff --git a/tool/ruby_vm/views/mjit_compile.inc.erb b/tool/ruby_vm/views/mjit_compile.inc.erb
index 019994e..c975545 100644
--- a/tool/ruby_vm/views/mjit_compile.inc.erb
+++ b/tool/ruby_vm/views/mjit_compile.inc.erb
@@ -76,6 +76,7 @@ switch (insn) { https://github.com/ruby/ruby/blob/trunk/tool/ruby_vm/views/mjit_compile.inc.erb#L76
           fprintf(f, "    if (UNLIKELY(RUBY_VM_INTERRUPTED_ANY(ec))) {\n");
           fprintf(f, "        reg_cfp->sp = vm_base_ptr(reg_cfp) + %d;\n", b->stack_size);
           fprintf(f, "        reg_cfp->pc = original_body_iseq + %d;\n", pos);
+          fprintf(f, "        RB_DEBUG_COUNTER_INC(mjit_cancel_leave);\n");
           fprintf(f, "        goto cancel;\n");
           fprintf(f, "    }\n");
           fprintf(f, "    ec->cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(reg_cfp);\n"); // vm_pop_frame
-- 
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