re PR middle-end/68134 (float64x1_t comparison ICE on aarch64-none-elf)

gcc/

	PR middle-end/68134
	* targhooks.c (default_get_mask_mode): Filter out
	scalar modes returned by mode_for_vector.

gcc/testsuite/

	PR middle-end/68134
	* gcc.dg/pr68134.c: New test.

From-SVN: r230463

gcc/ChangeLog

+2015-11-17  Ilya Enkovich  <enkovich.gnu@gmail.com>
+
+	PR middle-end/68134
+	* targhooks.c (default_get_mask_mode): Filter out
+	scalar modes returned by mode_for_vector.
+
 2015-11-17  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	PR target/68143

gcc/targhooks.c

@@ -1093,8 +1093,8 @@ default_get_mask_mode (unsigned nunits, unsigned vector_size)
   gcc_assert (elem_size * nunits == vector_size);
 
   vector_mode = mode_for_vector (elem_mode, nunits);
-  if (VECTOR_MODE_P (vector_mode)
-      && !targetm.vector_mode_supported_p (vector_mode))
+  if (!VECTOR_MODE_P (vector_mode)
+      || !targetm.vector_mode_supported_p (vector_mode))
     vector_mode = BLKmode;
 
   return vector_mode;

gcc/testsuite/ChangeLog

+2015-11-17  Ilya Enkovich  <enkovich.gnu@gmail.com>
+
+	PR middle-end/68134
+	* gcc.dg/pr68134.c: New test.
+
 2015-11-17  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	PR target/68143

gcc/testsuite/gcc.dg/pr68134.c

+/* { dg-do compile } */
+/* { dg-options "-std=c99" } */
+
+#include <stdint.h>
+
+typedef double float64x1_t __attribute__ ((vector_size (8)));
+typedef uint64_t uint64x1_t;
+
+void
+foo (void)
+{
+  float64x1_t arg1 = (float64x1_t) 0x3fedf9d4343c7c80;
+  float64x1_t arg2 = (float64x1_t) 0x3fcdc53742ea9c40;
+  uint64x1_t result = (uint64x1_t) (arg1 == arg2);
+  uint64_t got = result;
+  uint64_t exp = 0;
+  if (got != 0)
+    __builtin_abort ();
+}