Not all the world's a VAX, er ASCII, so don't make assumptions.

Tweak is_gv_magical's string comparisons to produce smaller object
code.
First 2005 copyright notice.

p4raw-id: //depot/perl@23724

diff --git a/gv.c b/gv.c
index d84042d..413ce99 100644 (file)
--- a/gv.c
+++ b/gv.c
@@ -1,7 +1,7 @@
 /*    gv.c
  *
  *    Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- *    2000, 2001, 2002, 2003, 2004, by Larry Wall and others
+ *    2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others
  *
  *    You may distribute under the terms of either the GNU General Public
  *    License or the Artistic License, as specified in the README file.
@@ -837,12 +837,15 @@ Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, I32 sv_type)
 
     /* set up magic where warranted */
     if (len > 1) {
+#ifndef EBCDIC
        if (*name > 'V' ) {
            /* Nothing else to do.
               The compiler will probably turn the switch statement into a
               branch table. Make sure we avoid even that small overhead for
               the common case of lower case variable names.  */
-       } else {
+       } else
+#endif
+       {
            const char *name2 = name + 1;
            switch (*name) {
            case 'A':
@@ -1832,36 +1835,37 @@ bool
 Perl_is_gv_magical(pTHX_ char *name, STRLEN len, U32 flags)
 {
     if (len > 1) {
+       const char *name1 = name + 1;
        switch (*name) {
        case 'I':
-           if (len == 3 && strEQ(name, "ISA"))
+           if (len == 3 && name1[1] == 'S' && name[2] == 'A')
                goto yes;
            break;
        case 'O':
-           if (len == 8 && strEQ(name, "OVERLOAD"))
+           if (len == 8 && strEQ(name1, "VERLOAD"))
                goto yes;
            break;
        case 'S':
-           if (len == 3 && strEQ(name, "SIG"))
+           if (len == 3 && name[1] == 'I' && name[2] == 'G')
                goto yes;
            break;
            /* Using ${^...} variables is likely to be sufficiently rare that
               it seems sensible to avoid the space hit of also checking the
               length.  */
        case '\017':   /* ${^OPEN} */
-           if (strEQ(name, "\017PEN"))
+           if (strEQ(name1, "PEN"))
                goto yes;
            break;
        case '\024':   /* ${^TAINT} */
-           if (strEQ(name, "\024AINT"))
+           if (strEQ(name1, "AINT"))
                goto yes;
            break;
        case '\025':    /* ${^UNICODE} */
-           if (strEQ(name, "\025NICODE"))
+           if (strEQ(name1, "NICODE"))
                goto yes;
            break;
        case '\027':   /* ${^WARNING_BITS} */
-           if (strEQ(name, "\027ARNING_BITS"))
+           if (strEQ(name1, "ARNING_BITS"))
                goto yes;
            break;
        case '1':