pre{inc,dec} is faster, even with integers

Attached patch gives i_postinc/i_postdec the same treatment as postinc/dec
in void context. Passes tests old and new.

We don't have many -Minteger tests, we could do with some more.

Hugo
--- op.c.old	Fri Oct 14 00:31:31 2005
+++ op.c	Fri Oct 14 18:01:42 2005
@@ -804,6 +804,16 @@
 	o->op_ppaddr = PL_ppaddr[OP_PREDEC];
 	break;
 
+    case OP_I_POSTINC:
+	o->op_type = OP_I_PREINC;	/* pre-increment is faster */
+	o->op_ppaddr = PL_ppaddr[OP_I_PREINC];
+	break;
+
+    case OP_I_POSTDEC:
+	o->op_type = OP_I_PREDEC;	/* pre-decrement is faster */
+	o->op_ppaddr = PL_ppaddr[OP_I_PREDEC];
+	break;
+
     case OP_OR:
     case OP_AND:
     case OP_DOR:
--- t/op/inc.t.old	Fri Jul 15 17:04:15 2005
+++ t/op/inc.t	Fri Oct 14 18:21:08 2005
@@ -2,7 +2,7 @@
 
 # use strict;
 
-print "1..32\n";
+print "1..34\n";
 
 my $test = 1;
 
@@ -185,3 +185,12 @@
 $a = 2147483648;
 $c=$a--;
 ok ($a == 2147483647, $a);
+
+{
+    use integer;
+    my $x = 0;
+    $x++;
+    ok ($x == 1, "(void) i_postinc");
+    $x--;
+    ok ($x == 0, "(void) i_postdec");
+}

• pre{inc,dec} is faster, even with integers by hv
• Re: pre{inc,dec} is faster, even with integers by Nicholas Clark