PR rtl-optimization/21330
* loop-unswitch.c (may_unswitch_on): Set *cinsn only when
returning non-NULL.
(unswitch_single_loop): Clear cinsn when retrying.
* gcc.c-torture/execute/
20050502-1.c: New test.
From-SVN: r99157
2005-05-03 Jakub Jelinek <jakub@redhat.com>
+ PR rtl-optimization/21330
+ * loop-unswitch.c (may_unswitch_on): Set *cinsn only when
+ returning non-NULL.
+ (unswitch_single_loop): Clear cinsn when retrying.
+
PR target/21297
* config/i386/i386.c (legitimize_address): When canonicalizing
ASHIFT into MULT, multiply by 1 << shift_count instead of
if (at != BB_END (bb))
return NULL_RTX;
- *cinsn = BB_END (bb);
if (!rtx_equal_p (op[0], XEXP (test, 0))
|| !rtx_equal_p (op[1], XEXP (test, 1)))
return NULL_RTX;
+ *cinsn = BB_END (bb);
return test;
}
basic_block *bbs;
struct loop *nloop;
unsigned i;
- rtx cond, rcond = NULL_RTX, conds, rconds, acond, cinsn = NULL_RTX;
+ rtx cond, rcond = NULL_RTX, conds, rconds, acond, cinsn;
int repeat;
edge e;
do
{
repeat = 0;
+ cinsn = NULL_RTX;
/* Find a bb to unswitch on. */
bbs = get_loop_body (loop);
2005-05-03 Jakub Jelinek <jakub@redhat.com>
+ PR rtl-optimization/21330
+ * gcc.c-torture/execute/20050502-1.c: New test.
+
PR target/21297
* gcc.c-torture/execute/20050502-2.c: New test.
--- /dev/null
+/* PR rtl-optimization/21330 */
+
+extern void abort (void);
+extern int strcmp (const char *, const char *);
+
+int
+__attribute__((noinline))
+bar (const char **x)
+{
+ return *(*x)++;
+}
+
+int
+__attribute__((noinline))
+baz (int c)
+{
+ return c != '@';
+}
+
+void
+__attribute__((noinline))
+foo (const char **w, char *x, _Bool y, _Bool z)
+{
+ char c = bar (w);
+ int i = 0;
+
+ while (1)
+ {
+ x[i++] = c;
+ c = bar (w);
+ if (y && c == '\'')
+ break;
+ if (z && c == '\"')
+ break;
+ if (!y && !z && !baz (c))
+ break;
+ }
+ x[i] = 0;
+}
+
+int
+main (void)
+{
+ char buf[64];
+ const char *p;
+ p = "abcde'fgh";
+ foo (&p, buf, 1, 0);
+ if (strcmp (p, "fgh") != 0 || strcmp (buf, "abcde") != 0)
+ abort ();
+ p = "ABCDEFG\"HI";
+ foo (&p, buf, 0, 1);
+ if (strcmp (p, "HI") != 0 || strcmp (buf, "ABCDEFG") != 0)
+ abort ();
+ p = "abcd\"e'fgh";
+ foo (&p, buf, 1, 1);
+ if (strcmp (p, "e'fgh") != 0 || strcmp (buf, "abcd") != 0)
+ abort ();
+ p = "ABCDEF'G\"HI";
+ foo (&p, buf, 1, 1);
+ if (strcmp (p, "G\"HI") != 0 || strcmp (buf, "ABCDEF") != 0)
+ abort ();
+ p = "abcdef@gh";
+ foo (&p, buf, 0, 0);
+ if (strcmp (p, "gh") != 0 || strcmp (buf, "abcdef") != 0)
+ abort ();
+ return 0;
+}