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genmodes: don't truncate a mode name of length >= 7 

* genmodes.c (make_complex_modes): Don't truncate a mode name of
length 7 or more when prepending a "C".  Suggested by Richard Guenther.

From-SVN: r186628
This commit is contained in:
Jim Meyering 2012-04-20 15:38:35 +00:00 committed by Jim Meyering
parent b7262828c0
commit 1f36f7b30b
2 changed files with 18 additions and 19 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2012-04-20 Jim Meyering <meyering@redhat.com>
* genmodes.c (make_complex_modes): Don't truncate a mode name of
length 7 or more when prepending a "C". Suggested by Richard Guenther.
2012-04-20 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
PR rtl-optimization/44214

32
gcc/genmodes.c
View File

@ -427,7 +427,6 @@ make_complex_modes (enum mode_class cl,
{
struct mode_data *m;
struct mode_data *c;
char buf[8];
enum mode_class cclass = complex_class (cl);
if (cclass == MODE_RANDOM)
@ -435,6 +434,7 @@ make_complex_modes (enum mode_class cl,
for (m = modes[cl]; m; m = m->next)
{
char *p, *buf;
size_t m_len;
/* Skip BImode. FIXME: BImode probably shouldn't be MODE_INT. */
@ -442,40 +442,34 @@ make_complex_modes (enum mode_class cl,
continue;
m_len = strlen (m->name);
if (m_len >= sizeof buf)
{
error ("%s:%d:mode name \"%s\" is too long",
m->file, m->line, m->name);
continue;
}
/* The leading "1 +" is in case we prepend a "C" below. */
buf = (char *) xmalloc (1 + m_len + 1);
/* Float complex modes are named SCmode, etc.
Int complex modes are named CSImode, etc.
This inconsistency should be eliminated. */
p = 0;
if (cl == MODE_FLOAT)
{
char *p, *q = 0;
/* We verified above that m->name+NUL fits in buf. */
memcpy (buf, m->name, m_len + 1);
p = strchr (buf, 'F');
if (p == 0)
q = strchr (buf, 'D');
if (p == 0 && q == 0)
if (p == 0 && strchr (buf, 'D') == 0)
{
error ("%s:%d: float mode \"%s\" has no 'F' or 'D'",
m->file, m->line, m->name);
free (buf);
continue;
}
if (p != 0)
*p = 'C';
else
snprintf (buf, sizeof buf, "C%s", m->name);
}
if (p != 0)
*p = 'C';
else
snprintf (buf, sizeof buf, "C%s", m->name);
{
buf[0] = 'C';
memcpy (buf + 1, m->name, m_len + 1);
}
c = new_mode (cclass, xstrdup (buf), file, line);
c = new_mode (cclass, buf, file, line);
c->component = m;
}
}