https://git.ruby-lang.org/ruby.git/commit/?id=a224ce8150

From a224ce8150f2bc687cf79eb415c931d87a4cd247 Mon Sep 17 00:00:00 2001
From: Alan Wu <XrXr@u...>
Date: Fri, 23 Apr 2021 19:37:03 -0400
Subject: Remove unnecessary checks for empty kw splat

These two checks are surrounded by an if that ensures the
call site is not a kw splat call site.
---
 vm_insnhelper.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/vm_insnhelper.c b/vm_insnhelper.c
index 854b8a9..be09fb3 100644
--- a/vm_insnhelper.c
+++ b/vm_insnhelper.c
@@ -2417,7 +2417,6 @@ vm_callee_setup_arg(rb_execution_context_t *ec, struct rb_calling_info *calling, https://github.com/ruby/ruby/blob/trunk/vm_insnhelper.c#L2417
         if (LIKELY(rb_simple_iseq_p(iseq))) {
             rb_control_frame_t *cfp = ec->cfp;
             CALLER_SETUP_ARG(cfp, calling, ci);
-            CALLER_REMOVE_EMPTY_KW_SPLAT(cfp, calling, ci);
 
             if (calling->argc != iseq->body->param.lead_num) {
                 argument_arity_error(ec, iseq, calling->argc, iseq->body->param.lead_num, iseq->body->param.lead_num);
@@ -2431,7 +2430,6 @@ vm_callee_setup_arg(rb_execution_context_t *ec, struct rb_calling_info *calling, https://github.com/ruby/ruby/blob/trunk/vm_insnhelper.c#L2430
         else if (rb_iseq_only_optparam_p(iseq)) {
             rb_control_frame_t *cfp = ec->cfp;
             CALLER_SETUP_ARG(cfp, calling, ci);
-            CALLER_REMOVE_EMPTY_KW_SPLAT(cfp, calling, ci);
 
             const int lead_num = iseq->body->param.lead_num;
             const int opt_num = iseq->body->param.opt_num;
-- 
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