+2011-01-03 Jakub Jelinek <jakub@redhat.com>
+
+ PR rtl-optimization/47157
+ * combine.c (try_combine): If undobuf.other_insn becomes
+ (set (pc) (pc)) jump, call update_cfg_for_uncondjump on it
+ and set *new_direct_jump_p too.
+
2011-01-03 Sebastian Pop <sebastian.pop@amd.com>
PR tree-optimization/47021
/* Optimize by combining instructions for GNU compiler.
Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
- Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
+ 2011 Free Software Foundation, Inc.
This file is part of GCC.
update_cfg_for_uncondjump (i3);
}
+ if (undobuf.other_insn != NULL_RTX
+ && GET_CODE (PATTERN (undobuf.other_insn)) == SET
+ && SET_SRC (PATTERN (undobuf.other_insn)) == pc_rtx
+ && SET_DEST (PATTERN (undobuf.other_insn)) == pc_rtx)
+ {
+ *new_direct_jump_p = 1;
+ update_cfg_for_uncondjump (undobuf.other_insn);
+ }
+
combine_successes++;
undo_commit ();
+2011-01-03 Jakub Jelinek <jakub@redhat.com>
+
+ PR rtl-optimization/47157
+ * gcc.c-torture/compile/pr47157.c: New test.
+
2011-01-03 Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
* gcc.dg/torture/vector-shift2.c (schar): Define.
--- /dev/null
+/* PR rtl-optimization/47157 */
+
+struct S { unsigned a; unsigned b; } c = { 1, 0 };
+unsigned long int e;
+void bar (int);
+int baz (void);
+
+static int
+foo (int x, short y)
+{
+ return ((x ^ y) & ((x ^ (x ^ y) & ~__INT_MAX__) - y ^ y)) < 0 ? x : x - y;
+}
+
+void
+test (void)
+{
+ bar (foo (baz () != (c.a | c.b), -1L));
+ for (e = 0; e; e = 1)
+ ;
+}