* bignum.c (rb_big_cmp): Avoid bignum allocation for comparison

between bignum and fixnum.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44965 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Sat Feb 15 11:47:47 2014  Tanaka Akira  <akr@fsij.org>
+
+	* bignum.c (rb_big_cmp): Avoid bignum allocation for comparison
+	  between bignum and fixnum.
+
 Sat Feb 15 10:55:12 2014  Hiroshi Shirosaki  <h.shirosaki@gmail.com>
 
 	* ext/-test-/win32/fd_setsize/depend: fix wrong dependencies.

bignum.c

@@ -5277,13 +5277,17 @@ rb_big_cmp(VALUE x, VALUE y)
 {
     int cmp;
 
-    if (y == INT2FIX(0)) {
-        if (BIGZEROP(x)) return INT2FIX(0);
-        if (RBIGNUM_NEGATIVE_P(x)) return INT2FIX(-1);
-        return INT2FIX(1);
-    }
-    else if (FIXNUM_P(y)) {
-	y = rb_int2big(FIX2LONG(y));
+    if (FIXNUM_P(y)) {
+        x = bignorm(x);
+        if (FIXNUM_P(x)) {
+            if (FIX2LONG(x) > FIX2LONG(y)) return INT2FIX(1);
+            if (FIX2LONG(x) < FIX2LONG(y)) return INT2FIX(-1);
+            return INT2FIX(0);
+        }
+        else {
+            if (RBIGNUM_NEGATIVE_P(x)) return INT2FIX(-1);
+            return INT2FIX(1);
+        }
     }
     else if (RB_BIGNUM_TYPE_P(y)) {
     }