Fix broken gcc.dg/torture/pr80341.c for avr

This patch skips pr80341.c for targets with int size less than 32 bits.
The assertion in the testcase holds only if sizeof(int) > sizeof(short), 
which isn't true for smaller int size targets like the avr.

gcc/testsuite

2017-04-19  Senthil Kumar Selvaraj  <senthil_kumar.selvaraj@atmel.com>

	* gcc.dg/torture/pr80341.c: Require int32plus.

From-SVN: r246994

gcc/testsuite/ChangeLog

@@ -1,3 +1,7 @@
+2017-04-19  Senthil Kumar Selvaraj  <senthil_kumar.selvaraj@atmel.com>
+
+	* gcc.dg/torture/pr80341.c: Require int32plus.
+
 2017-04-19  Eric Botcazou  <ebotcazou@adacore.com>
             Jeff Law  <law@redhat.com>
 

gcc/testsuite/gcc.dg/torture/pr80341.c

@@ -1,5 +1,6 @@
 /* { dg-do run } */
 /* { dg-additional-options "-Wno-overflow" } */
+/* { dg-require-effective-target int32plus } */
 
 const signed char c = -84;
 signed char s;