+2002-12-19 Eric Botcazou <ebotcazou@libertysurf.fr>
+
+ PR optimization/8988
+ * loop.c (maybe_eliminate_biv): Kill REG_EQUAL notes mentioning
+ the biv when eliminating.
+
2002-12-19 Devang Patel <dpatel@apple.com>
* gcc.c (struct default_compiler): Recognizes input file name with
.CPP extension as C++ source files
enum rtx_code code = GET_CODE (p);
basic_block where_bb = 0;
rtx where_insn = threshold >= insn_count ? 0 : p;
+ rtx note;
/* If this is a libcall that sets a giv, skip ahead to its end. */
if (GET_RTX_CLASS (code) == 'i')
{
- rtx note = find_reg_note (p, REG_LIBCALL, NULL_RTX);
+ note = find_reg_note (p, REG_LIBCALL, NULL_RTX);
if (note)
{
}
}
}
+
+ /* Closely examine the insn if the biv is mentioned. */
if ((code == INSN || code == JUMP_INSN || code == CALL_INSN)
&& reg_mentioned_p (reg, PATTERN (p))
&& ! maybe_eliminate_biv_1 (loop, PATTERN (p), p, bl,
bl->regno, INSN_UID (p));
break;
}
+
+ /* If we are eliminating, kill REG_EQUAL notes mentioning the biv. */
+ if (eliminate_p
+ && (note = find_reg_note (p, REG_EQUAL, NULL_RTX)) != NULL_RTX
+ && reg_mentioned_p (reg, XEXP (note, 0)))
+ remove_note (p, note);
}
if (p == loop->end)
2002-12-19 Eric Botcazou <ebotcazou@libertysurf.fr>
+ * gcc.c-torture/execute/20021219-1.c: New test.
+
+2002-12-19 Eric Botcazou <ebotcazou@libertysurf.fr>
+
* gcc.dg/i386-pic-1.c: New test.
2002-12-18 Kriang Lerdsuwanakij <lerdsuwa@users.sourceforge.net>
--- /dev/null
+/* PR optimization/8988 */
+/* Contributed by Kevin Easton */
+
+void foo(char *p1, char **p2)
+{}
+
+int main(void)
+{
+ char str[] = "foo { xx }";
+ char *ptr = str + 5;
+
+ foo(ptr, &ptr);
+
+ while (*ptr && (*ptr == 13 || *ptr == 32))
+ ptr++;
+
+ return 0;
+}