re PR target/84014 (ICE in setup_min_max_allocno_live_range_point, at ira-build.c:2762)

2018-01-24  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/84014
	* ira-build.c (setup_min_max_allocno_live_range_point): Set up
	min/max for never referenced object.

2018-01-24  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/84014
	* gcc.target/powerpc/pr84014.c: New.

From-SVN: r257029

gcc/ChangeLog

+2018-01-24  Vladimir Makarov  <vmakarov@redhat.com>
+
+	PR target/84014
+	* ira-build.c (setup_min_max_allocno_live_range_point): Set up
+	min/max for never referenced object.
+
 2018-01-24  Jakub Jelinek  <jakub@redhat.com>
 
 	PR middle-end/83977

gcc/ira-build.c

@@ -2728,7 +2728,13 @@ setup_min_max_allocno_live_range_point (void)
 	    ira_object_t parent_obj;
 
 	    if (OBJECT_MAX (obj) < 0)
-	      continue;
+	      {
+		/* The object is not used and hence does not live.  */
+		ira_assert (OBJECT_LIVE_RANGES (obj) == NULL);
+		OBJECT_MAX (obj) = 0;
+		OBJECT_MIN (obj) = 1;
+		continue;
+	      }
 	    ira_assert (ALLOCNO_CAP_MEMBER (a) == NULL);
 	    /* Accumulation of range info.  */
 	    if (ALLOCNO_CAP (a) != NULL)

gcc/testsuite/ChangeLog

+2018-01-24  Vladimir Makarov  <vmakarov@redhat.com>
+
+	PR target/84014
+	* gcc.target/powerpc/pr84014.c: New.
+
 2018-01-24  Jakub Jelinek  <jakub@redhat.com>
 
 	PR middle-end/83977

gcc/testsuite/gcc.target/powerpc/pr84014.c

+/* { dg-do compile { target powerpc*-*-* } }*/
+/* { dg-options "-O1 -fno-split-wide-types -m32 -mcpu=e300c3" } */
+
+int
+nh (void)
+{
+}
+
+long long int
+si (void)
+{
+}
+
+int
+xf (int fg)
+{
+  int y5 = nh ();
+  fg += !!y5 ? y5 : si ();
+  return fg;
+}