Fix pr69941.c test failure for avr

The test assumes ints are atleast 32 bits wide. For the avr
target, ints are 16 bits wide. This leads VRP to conclude
that a right shift by 9 followed by an equality comparison 
to 0x74 can never be true. VRP eliminates the conditional, and
the code ends up unconditionally calling __builtin_abort.

Fixed the testcase to use __INT32_TYPE__ for targets with less
than 32 bit wide integers, wherever the size happens to be
significant.

gcc/testsuite/ChangeLog

2016-10-05  Senthil Kumar Selvaraj  <senthil_kumar.selvaraj@atmel.com>

        * gcc.dg/torture/pr69941.c: Use __INT32_TYPE__ instead
        of int if __SIZEOF_INT__ is less than 4 bytes.

From-SVN: r240795

gcc/testsuite/ChangeLog

+2016-10-05  Senthil Kumar Selvaraj  <senthil_kumar.selvaraj@atmel.com>
+
+	* gcc.dg/torture/pr69941.c: Use __INT32_TYPE__ instead
+	of int if __SIZEOF_INT__ is less than 4 bytes.
+
 2016-10-05  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
 
 	* gfortran.dg/dtio_15.f90: Fix spaces in dg-do.

gcc/testsuite/gcc.dg/torture/pr69941.c

 /* { dg-do run } */
+
+#if __SIZEOF_INT__ < 4
+__extension__ typedef __INT32_TYPE__ int32_t;
+#else
+typedef int int32_t;
+#endif
  
 int a = 0;
 int b = 0;
 int c = 0;
-int e = 0;
+int32_t e = 0;
 int f = 0;
-int *g = &e;
+int32_t *g = &e;
  
 int fn1() { return b ? a : b; }