Revert this until we can figure out WB issues or remove shapes from GC

Revert "* expand tabs. [ci skip]"

This reverts commit 830b5b5c351c5c6efa5ad461ae4ec5085e5f0275.

Revert "This commit implements the Object Shapes technique in CRuby."

This reverts commit 9ddfd2ca004d1952be79cf1b84c52c79a55978f4.

1 files changed, 15 insertions, 11 deletions

diff --git a/compile.c b/compile.c
index 9051ecfcd6..a5da919c0a 100644
--- a/compile.c
+++ b/compile.c
@@ -2058,7 +2058,20 @@ cdhash_set_label_i(VALUE key, VALUE val, VALUE ptr)
 static inline VALUE
 get_ivar_ic_value(rb_iseq_t *iseq,ID id)
 {
-    return INT2FIX(ISEQ_BODY(iseq)->ivc_size++);
+    VALUE val;
+    struct rb_id_table *tbl = ISEQ_COMPILE_DATA(iseq)->ivar_cache_table;
+    if (tbl) {
+        if (rb_id_table_lookup(tbl,id,&val)) {
+            return val;
+        }
+    }
+    else {
+        tbl = rb_id_table_create(1);
+        ISEQ_COMPILE_DATA(iseq)->ivar_cache_table = tbl;
+    }
+    val = INT2FIX(ISEQ_BODY(iseq)->ivc_size++);
+    rb_id_table_insert(tbl,id,val);
+    return val;
 }
 
 static inline VALUE
@@ -2459,13 +2472,9 @@ iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
                             generated_iseq[code_index + 1 + j] = (VALUE)ic;
                         }
                         break;
-                      case TS_IVC: /* inline ivar cache */
-                        {
-                            unsigned int ic_index = FIX2UINT(operands[j]);
-                            vm_ic_attr_index_initialize(((IVC)&body->is_entries[ic_index]), INVALID_SHAPE_ID);
-                        }
                       case TS_ISE: /* inline storage entry: `once` insn */
                       case TS_ICVARC: /* inline cvar cache */
+                      case TS_IVC: /* inline ivar cache */
                         {
                             unsigned int ic_index = FIX2UINT(operands[j]);
                             IC ic = &ISEQ_IS_ENTRY_START(body, type)[ic_index].ic_cache;
@@ -11505,11 +11514,6 @@ ibf_load_code(const struct ibf_load *load, rb_iseq_t *iseq, ibf_offset_t bytecod
 
                     ISE ic = ISEQ_IS_ENTRY_START(load_body, operand_type) + op;
                     code[code_index] = (VALUE)ic;
-
-                    if (operand_type == TS_IVC) {
-                        vm_ic_attr_index_initialize(((IVC)code[code_index]), INVALID_SHAPE_ID);
-                    }
-
                 }
                 break;
               case TS_CALLDATA: