re PR middle-end/90139 (ICE in emit_block_move_hints, at expr.c:1601)

	PR middle-end/90139
	* tree-outof-ssa.c (get_temp_reg): If reg_mode is BLKmode, return
	assign_temp instead of gen_reg_rtx.

	* gcc.c-torture/compile/pr90139.c: New test.

From-SVN: r270457

gcc/ChangeLog

+2019-04-19  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/90139
+	* tree-outof-ssa.c (get_temp_reg): If reg_mode is BLKmode, return
+	assign_temp instead of gen_reg_rtx.
+
 2019-04-19  Christophe Lyon  <christophe.lyon@linaro.org>
 
 	PR translation/90118

gcc/testsuite/ChangeLog

 2019-04-19  Jakub Jelinek  <jakub@redhat.com>
 
+	PR middle-end/90139
+	* gcc.c-torture/compile/pr90139.c: New test.
+
 	PR c++/90138
 	* g++.dg/template/pr90138.C: New test.
 

gcc/testsuite/gcc.c-torture/compile/pr90139.c

+/* PR middle-end/90139 */
+
+typedef float __attribute__((vector_size (sizeof (float)))) V;
+void bar (int, V *);
+int l;
+
+void
+foo (void)
+{
+  V n, b, o;
+  while (1)
+    switch (l)
+      {
+      case 0:
+	o = n;
+	n = b;
+	b = o;
+	bar (1, &o);
+      }
+}

gcc/tree-outof-ssa.c

@@ -653,6 +653,8 @@ get_temp_reg (tree name)
   tree type = TREE_TYPE (name);
   int unsignedp;
   machine_mode reg_mode = promote_ssa_mode (name, &unsignedp);
+  if (reg_mode == BLKmode)
+    return assign_temp (type, 0, 0);
   rtx x = gen_reg_rtx (reg_mode);
   if (POINTER_TYPE_P (type))
     mark_reg_pointer (x, TYPE_ALIGN (TREE_TYPE (type)));