Fix gcc.dg/tree-ssa/pr59597.c failure for avr

Declare loop index variable j as a 32 bit int instead of assuming ints 
are 32 bits. The smaller int size on the avr makes prior passes optimize
away the loop exit check (j < 10000000), as the constant is outside
the range of a 16 bit int.

gcc/testsuite/ChangeLog

2016-10-11  Senthil Kumar Selvaraj  <senthil_kumar.selvaraj@atmel.com>

	* gcc.dg/tree-ssa/pr59597.c: Typedef  __INT32_TYPE__ to i32.
	(main): Declare j as i32 instead of int.

From-SVN: r240986

gcc/testsuite/ChangeLog

+2016-10-11  Senthil Kumar Selvaraj  <senthil_kumar.selvaraj@atmel.com>
+
+	* gcc.dg/tree-ssa/pr59597.c: Typedef  __INT32_TYPE__ to i32.
+	(main): Declare j as i32 instead of int.
+
 2016-10-11  Thomas Preud'homme  <thomas.preudhomme@arm.com>
 
 	PR testsuite/PR77710

gcc/testsuite/gcc.dg/tree-ssa/pr59597.c

@@ -4,6 +4,8 @@
 typedef unsigned short u16;
 typedef unsigned char u8;
 typedef unsigned int u32;
+__extension__ typedef __INT32_TYPE__ i32;
+
 long int random(int);
 #define NNN 10
 
@@ -37,7 +39,7 @@ Calc_crc8 (u8 data, u16 crc)
 int
 main (int argc, char argv[])
 {
-  int i, j; u16 crc;
+  int i; i32 j; u16 crc;
   for (j = 0; j < 10000000; j++)
     {
       for (i = 0; i < NNN; i++)