rename `defined_ivar` to `definedivar`

because non-opt instructions should contain `_` char.

compile.c

@@ -5460,7 +5460,7 @@ defined_expr0(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
 
 #define PUSH_VAL(type) (needstr == Qfalse ? Qtrue : rb_iseq_defined_string(type))
       case NODE_IVAR:
-        ADD_INSN3(ret, line_node, defined_ivar,
+        ADD_INSN3(ret, line_node, definedivar,
                   ID2SYM(node->nd_vid), get_ivar_ic_value(iseq,node->nd_vid), PUSH_VAL(DEFINED_IVAR));
         return;
 

insns.def

@@ -703,7 +703,7 @@ defined
 
 /* defined?(@foo) */
 DEFINE_INSN
-defined_ivar
+definedivar
 (ID id, IVC ic, VALUE pushval)
 ()
 (VALUE val)

yjit/src/codegen.rs

@@ -1,4 +1,4 @@
-// We use the YARV bytecode constants which have a CRuby-style name
+// We use the YARV bytecode constants which have a CRuby-style name
 #![allow(non_upper_case_globals)]
 
 use crate::asm::*;
@@ -2389,7 +2389,7 @@ fn gen_defined(
     KeepCompiling
 }
 
-fn gen_defined_ivar(
+fn gen_definedivar(
     jit: &mut JITState,
     ctx: &mut Context,
     asm: &mut Assembler,
@@ -7672,7 +7672,7 @@ fn get_gen_fn(opcode: VALUE) -> Option<InsnGenFn> {
         YARVINSN_putstring => Some(gen_putstring),
         YARVINSN_expandarray => Some(gen_expandarray),
         YARVINSN_defined => Some(gen_defined),
-        YARVINSN_defined_ivar => Some(gen_defined_ivar),
+        YARVINSN_definedivar => Some(gen_definedivar),
         YARVINSN_checkkeyword => Some(gen_checkkeyword),
         YARVINSN_concatstrings => Some(gen_concatstrings),
         YARVINSN_getinstancevariable => Some(gen_getinstancevariable),
@@ -7802,11 +7802,11 @@ impl CodegenGlobals {
 
             // Memory protection syscalls need page-aligned addresses, so check it here. Assuming
             // `virt_block` is page-aligned, `second_half` should be page-aligned as long as the
-            // page size in bytes is a power of two 2¹⁹ or smaller. This is because the user
-            // requested size is half of mem_option × 2²⁰ as it's in MiB.
+            // page size in bytes is a power of two 2ﾂｹ竅ｹ or smaller. This is because the user
+            // requested size is half of mem_option ﾃ?2ﾂｲ竅ｰ as it's in MiB.
             //
             // Basically, we don't support x86-64 2MiB and 1GiB pages. ARMv8 can do up to 64KiB
-            // (2¹⁶ bytes) pages, which should be fine. 4KiB pages seem to be the most popular though.
+            // (2ﾂｹ竅ｶ bytes) pages, which should be fine. 4KiB pages seem to be the most popular though.
             let page_size = unsafe { rb_yjit_get_page_size() };
             assert_eq!(
                 virt_block as usize % page_size.as_usize(), 0,

yjit/src/cruby_bindings.inc.rs

@@ -1,4 +1,4 @@
-/* automatically generated by rust-bindgen 0.63.0 */
+/* automatically generated by rust-bindgen 0.63.0 */
 
 #[repr(C)]
 #[derive(Copy, Clone, Debug, Default, Eq, Hash, Ord, PartialEq, PartialOrd)]
@@ -893,7 +893,7 @@ pub const YARVINSN_topn: ruby_vminsn_type = 40;
 pub const YARVINSN_setn: ruby_vminsn_type = 41;
 pub const YARVINSN_adjuststack: ruby_vminsn_type = 42;
 pub const YARVINSN_defined: ruby_vminsn_type = 43;
-pub const YARVINSN_defined_ivar: ruby_vminsn_type = 44;
+pub const YARVINSN_definedivar: ruby_vminsn_type = 44;
 pub const YARVINSN_checkmatch: ruby_vminsn_type = 45;
 pub const YARVINSN_checkkeyword: ruby_vminsn_type = 46;
 pub const YARVINSN_checktype: ruby_vminsn_type = 47;
@@ -995,7 +995,7 @@ pub const YARVINSN_trace_topn: ruby_vminsn_type = 142;
 pub const YARVINSN_trace_setn: ruby_vminsn_type = 143;
 pub const YARVINSN_trace_adjuststack: ruby_vminsn_type = 144;
 pub const YARVINSN_trace_defined: ruby_vminsn_type = 145;
-pub const YARVINSN_trace_defined_ivar: ruby_vminsn_type = 146;
+pub const YARVINSN_trace_definedivar: ruby_vminsn_type = 146;
 pub const YARVINSN_trace_checkmatch: ruby_vminsn_type = 147;
 pub const YARVINSN_trace_checkkeyword: ruby_vminsn_type = 148;
 pub const YARVINSN_trace_checktype: ruby_vminsn_type = 149;