From 2dff7ed6a2ccd25e8cfc643a90b5867875c8035d Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Sat, 5 Mar 2022 08:02:58 +0900
Subject: [PATCH] mrbc.c: add `--no-optimize` option to disable optimization;
 close #5661

---
 mrbgems/mruby-bin-mrbc/tools/mrbc/mrbc.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/mrbgems/mruby-bin-mrbc/tools/mrbc/mrbc.c b/mrbgems/mruby-bin-mrbc/tools/mrbc/mrbc.c
index 7732914d7..9de756dcf 100644
--- a/mrbgems/mruby-bin-mrbc/tools/mrbc/mrbc.c
+++ b/mrbgems/mruby-bin-mrbc/tools/mrbc/mrbc.c
@@ -25,7 +25,8 @@ struct mrbc_args {
   mrb_bool verbose      : 1;
   mrb_bool remove_lv    : 1;
   mrb_bool no_ext_ops   : 1;
-  uint8_t flags         : 4;
+  mrb_bool no_optimize  : 1;
+  uint8_t flags         : 2;
 };
 
 static void
@@ -42,6 +43,7 @@ usage(const char *name)
   "-s           define <symbol> as static variable",
   "--remove-lv  remove local variables",
   "--no-ext-ops prohibit using OP_EXTs",
+  "--no-optimize disable peephole optimization",
   "--verbose    run at verbose mode",
   "--version    print the version",
   "--copyright  print the copyright",
@@ -169,6 +171,10 @@ parse_args(mrb_state *mrb, int argc, char **argv, struct mrbc_args *args)
           args->no_ext_ops = TRUE;
           break;
         }
+        else if (strcmp(argv[i] + 2, "no-optimize") == 0) {
+          args->no_optimize = TRUE;
+          break;
+        }
         return -1;
       default:
         return i;
@@ -224,6 +230,7 @@ load_file(mrb_state *mrb, struct mrbc_args *args)
     c->dump_result = TRUE;
   c->no_exec = TRUE;
   c->no_ext_ops = args->no_ext_ops;
+  c->no_optimize = args->no_optimize;
   if (input[0] == '-' && input[1] == '\0') {
     infile = stdin;
   }