args.h (clear_non_sret_int_hardware_registers): Use correct register when clearing %edx.

	* gcc.target/i386/iamcu/args.h (clear_non_sret_int_hardware_registers):
	Use correct register when clearing %edx.

From-SVN: r236883

gcc/testsuite/ChangeLog

+2016-05-30  Uros Bizjak  <ubizjak@gmail.com>
+
+	* gcc.target/i386/iamcu/args.h (clear_non_sret_int_hardware_registers):
+	Use correct register when clearing %edx.
+
 2016-05-30  Alexander Monakov  <amonakov@ispras.ru>
 
 	PR tree-optimization/71289

gcc/testsuite/gcc.target/i386/iamcu/args.h

@@ -30,7 +30,7 @@ extern void *iamcu_memset (void *, int, size_t);
 /* Clear all scratch integer registers, excluding the one used to return
    aggregate.  */
 #define clear_non_sret_int_hardware_registers \
-  asm __volatile__ ("xor %%edx, %%ebx\n\t" \
+  asm __volatile__ ("xor %%edx, %%edx\n\t" \
 		    "xor %%ecx, %%ecx\n\t" \
 		    ::: "edx", "ecx");