[PATCH] Revert "symbol.h: memoize hashval for RSymbol"

[Eric Wong <e@80x24.org>]

This reverts commit r51410
(442b77e72166c9c993e3c6663568431123510dec in git)
---
 common.mk | 1 -
 hash.c    | 3 +--
 symbol.c  | 6 ------
 symbol.h  | 1 -
 4 files changed, 1 insertion(+), 10 deletions(-)

diff --git a/common.mk b/common.mk
index 1a3e463..b0a4a96 100644
--- a/common.mk
+++ b/common.mk
@@ -1532,7 +1532,6 @@ hash.$(OBJEXT): {$(VPATH)}oniguruma.h
 hash.$(OBJEXT): {$(VPATH)}probes.h
 hash.$(OBJEXT): {$(VPATH)}st.h
 hash.$(OBJEXT): {$(VPATH)}subst.h
-hash.$(OBJEXT): {$(VPATH)}symbol.h
 hash.$(OBJEXT): {$(VPATH)}util.h
 hash.$(OBJEXT): {$(VPATH)}vm_opts.h
 inits.$(OBJEXT): $(hdrdir)/ruby/ruby.h
diff --git a/hash.c b/hash.c
index f46662a..2a084f7 100644
--- a/hash.c
+++ b/hash.c
@@ -17,7 +17,6 @@
 #include <errno.h>
 #include "probes.h"
 #include "id.h"
-#include "symbol.h"
 
 #ifdef __APPLE__
 # ifdef HAVE_CRT_EXTERNS_H
@@ -150,7 +149,7 @@ rb_any_hash(VALUE a)
 	hnum = rb_str_hash(a);
     }
     else if (BUILTIN_TYPE(a) == T_SYMBOL) {
-	return RSYMBOL(a)->hashval;
+	hnum = rb_objid_hash((st_index_t)a);
     }
     else if (BUILTIN_TYPE(a) == T_FLOAT) {
 	return rb_dbl_hash(rb_float_value(a));
diff --git a/symbol.c b/symbol.c
index 9e2fccd..9fbe3dd 100644
--- a/symbol.c
+++ b/symbol.c
@@ -505,18 +505,12 @@ static VALUE
 dsymbol_alloc(const VALUE klass, const VALUE str, rb_encoding * const enc, const ID type)
 {
     const VALUE dsym = rb_newobj_of(klass, T_SYMBOL | FL_WB_PROTECTED);
-    st_index_t hashval;
 
     rb_enc_associate(dsym, enc);
     OBJ_FREEZE(dsym);
     RB_OBJ_WRITE(dsym, &RSYMBOL(dsym)->fstr, str);
     RSYMBOL(dsym)->id = type;
 
-    /* we want hashval to be in Fixnum range [ruby-core:15713] r15672 */
-    hashval = rb_str_hash(str);
-    hashval <<= 1;
-    RSYMBOL(dsym)->hashval = (st_index_t)RSHIFT(hashval, 1);
-
     register_sym(str, dsym);
     rb_hash_aset(global_symbols.dsymbol_fstr_hash, str, Qtrue);
 
diff --git a/symbol.h b/symbol.h
index 5c52b97..549eabd 100644
--- a/symbol.h
+++ b/symbol.h
@@ -25,7 +25,6 @@
 
 struct RSymbol {
     struct RBasic basic;
-    st_index_t hashval;
     VALUE fstr;
     ID id;
 };
-- 
EW