re PR rtl-optimization/55141 (wrong code with -fno-split-wide-types)

2012-12-07  Vladimir Makarov  <vmakarov@redhat.com>

	testsuite/gcc.target/i386/pr55141.c
	* lra-constraints.c (lra_constraints): Use biggest mode for
	df_set_regs_ever_live.

2012-12-07  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/55141
	* gcc.target/i386/pr55141.c: New.

From-SVN: r194308

gcc/ChangeLog

+2012-12-07  Vladimir Makarov  <vmakarov@redhat.com>
+
+	testsuite/gcc.target/i386/pr55141.c
+	* lra-constraints.c (lra_constraints): Use biggest mode for
+	df_set_regs_ever_live.
+
 2012-12-07  Jan Hubicka  <jh@suse.cz>
 
  	* tree-ssa-loop-ivcanon.c (tree_estimate_loop_size): Add UPPER_BOUND

gcc/lra-constraints.c

@@ -3329,8 +3329,9 @@ lra_constraints (bool first_p)
 	reg = regno_reg_rtx[i];
 	if ((hard_regno = lra_get_regno_hard_regno (i)) >= 0)
 	  {
-	    int j, nregs = hard_regno_nregs[hard_regno][PSEUDO_REGNO_MODE (i)];
+	    int j, nregs;
 
+	    nregs = hard_regno_nregs[hard_regno][lra_reg_info[i].biggest_mode];
 	    for (j = 0; j < nregs; j++)
 	      df_set_regs_ever_live (hard_regno + j, true);
 	  }

gcc/testsuite/ChangeLog

+2012-12-07  Vladimir Makarov  <vmakarov@redhat.com>
+
+	PR rtl-optimization/55141
+	* gcc.target/i386/pr55141.c: New.
+
 2012-12-07  Dodji Seketeli  <dodji@redhat.com>
 
 	PR c++/54401

gcc/testsuite/gcc.target/i386/pr55141.c

+/* { dg-do run } */
+/* { dg-options "-O -fno-split-wide-types" } */
+
+typedef struct
+{
+  long int p_x, p_y;
+} Point;
+
+static __attribute__ ((noinline, noclone))
+     void foo (Point p0, Point p1, Point p2, Point p3)
+{
+  if (p0.p_x != 1
+      || p1.p_x != 3
+      || p2.p_x != 5
+      || p3.p_x != 7)
+    __builtin_abort ();
+}
+
+int
+main (int argc, char *argv[])
+{
+  Point p0, p1, p2, p3, p4, p5;
+  p0.p_x = 1;
+  p1.p_x = 3;
+  p2.p_x = 5;
+  p3.p_x = 7;
+  foo (p0, p1, p2, p3);
+  return 0;
+}