https://git.ruby-lang.org/ruby.git/commit/?id=9c287f8caa

From 9c287f8caa1fdfc9820ab3f6b01fed252dff77b5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=8D=9C=E9=83=A8=E6=98=8C=E5=B9=B3?=
 <shyouhei@r...>
Date: Mon, 1 Jun 2020 13:43:47 +0900
Subject: vm_call_symbol: on-stack call info

This changeset reduces the generated binary of vm_call_symbol from 808
bytes to 798 bytes on my machine.  Should reduce GC pressure as well.

diff --git a/vm_insnhelper.c b/vm_insnhelper.c
index 53f2b33..6fb2e2b 100644
--- a/vm_insnhelper.c
+++ b/vm_insnhelper.c
@@ -2682,6 +2682,17 @@ aliased_callable_method_entry(const rb_callable_method_entry_t *me) https://github.com/ruby/ruby/blob/trunk/vm_insnhelper.c#L2682
     return cme;
 }
 
+#define VM_CI_ON_STACK(mid_, flags_, argc_, kwarg_) \
+    (struct rb_callinfo) {                          \
+        .flags = T_IMEMO |                          \
+            (imemo_callinfo << FL_USHIFT) |         \
+            VM_CALLINFO_NOT_UNDER_GC,               \
+        .mid   = mid_,                              \
+        .flag  = flags_,                            \
+        .argc  = argc_,                             \
+        .kwarg = kwarg_,                            \
+    }
+
 #define VM_CC_ON_STACK(clazz, call, aux, cme) \
     (struct rb_callcache) {                   \
         .flags = T_IMEMO |                    \
@@ -2771,14 +2782,11 @@ vm_call_symbol( https://github.com/ruby/ruby/blob/trunk/vm_insnhelper.c#L2782
     }
 
     return vm_call_method(ec, reg_cfp, calling, &(struct rb_call_data) {
-        .ci = vm_ci_new_runtime(mid, flags, argc, vm_ci_kwarg(ci)),
-        .cc = &(struct rb_callcache) {
-            .flags = T_IMEMO | (imemo_callcache << FL_USHIFT) | VM_CALLCACHE_UNMARKABLE,
-            .klass = klass,
-            .cme_  = rb_callable_method_entry_with_refinements(klass, mid, NULL),
-            .call_ = 0,
-            .aux_.method_missing_reason = missing_reason,
-        },
+        .ci = &VM_CI_ON_STACK(mid, flags, argc, vm_ci_kwarg(ci)),
+        .cc = &VM_CC_ON_STACK(klass, vm_call_general, {
+                .method_missing_reason = missing_reason
+              },
+              rb_callable_method_entry_with_refinements(klass, mid, NULL)),
     });
 }
 
-- 
cgit v0.10.2


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