[arm] PR target/90405 New test.

This time really add the test.

gcc/testsuite:
        PR target/90405
        * gcc.target/arm/pr90405.c: New test.

From-SVN: r271037

gcc/testsuite/ChangeLog

+2019-05-09  Richard Earnshaw  <rearnsha@arm.com>
+
+	PR target/90405
+	* gcc.target/arm/pr90405.c: New test.
+
 2019-05-09  Martin Liska  <mliska@suse.cz>
 
 	* gcc.dg/gimplefe-39.c: New test.

gcc/testsuite/gcc.target/arm/pr90405.c

+/* PR target/90405 */
+/* { dg-do compile } */
+/* { dg-require-effective-target arm_thumb1_ok } */
+/* { dg-options "-Ofast -mthumb -mtpcs-leaf-frame" } */
+
+
+#define vector __attribute((vector_size(16)))
+vector float a;
+
+float
+foo (float b)
+{
+  vector float c = { 0, 0, 0, 0 };
+  vector float d = { 0, 0, 0, 0 };
+  d += c;
+  return ((float *)&c)[2];
+}
+
+float
+bar (vector float a, int b, vector float c)
+{
+  vector float e = c * a;
+  a = (vector float) { 0, 0, 0, 0 };
+  c = (vector float) { 0, 0, 0, 0 };
+  float d = ((float *)&a)[0];
+  float f = ((float *)&c)[0];
+  return d * f;
+}