const-addr-1.c: New.

2017-12-07  Sandra Loosemore  <sandra@codesourcery.com>

	gcc/testsuite/
	* gcc.target/nios2/const-addr-1.c: New.
	* gcc.target/nios2/const-addr-2.c: New.
	* gcc.target/nios2/const-addr-3.c: New.

From-SVN: r255494

gcc/testsuite/ChangeLog

+2017-12-07  Sandra Loosemore  <sandra@codesourcery.com>
+
+	* gcc.target/nios2/const-addr-1.c: New.
+	* gcc.target/nios2/const-addr-2.c: New.
+	* gcc.target/nios2/const-addr-3.c: New.
+
 2017-12-08  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/83252

gcc/testsuite/gcc.target/nios2/const-addr-1.c

+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+/* { dg-final { scan-assembler-times "stw\tr., 12816\\(r\[2-9\]\\)" 1 } } */
+/* { dg-final { scan-assembler-times "stw\tr., 12816\\(r0\\)" 1 } } */
+/* { dg-final { scan-assembler-times "stw\tr., 528\\(r0\\)" 1 } } */
+
+/* These functions should not spill to stack.  */
+/* { dg-final { scan-assembler-not "addi\tsp, sp" } } */
+/* { dg-final { scan-assembler-not "spdeci" } } */
+
+#define addr1 ((volatile int *) 0x43210)
+#define addr2 ((volatile int *) 0x3210)
+#define addr3 ((volatile int *) 0x210)
+
+#define SET(l,r) (*(l) = (r))
+
+void foo1 (int x) { SET (addr1, x); }
+void foo2 (int x) { SET (addr2, x); }
+void foo3 (int x) { SET (addr3, x); }

gcc/testsuite/gcc.target/nios2/const-addr-2.c

+/* { dg-do compile } */
+/* { dg-options "-march=r1 -mno-cdx -mno-bmx -O2" } */
+/* { dg-final { scan-assembler-times "stwio\tr., 12816\\(r\[2-9\]\\)" 1 } } */
+/* { dg-final { scan-assembler-times "stwio\tr., 12816\\(r0\\)" 1 } } */
+/* { dg-final { scan-assembler-times "stwio\tr., 528\\(r0\\)" 1 } } */
+
+/* These functions should not spill to stack.  */
+/* { dg-final { scan-assembler-not "addi\tsp, sp" } } */
+
+#define addr1 ((volatile int *) 0x43210)
+#define addr2 ((volatile int *) 0x3210)
+#define addr3 ((volatile int *) 0x210)
+
+#define SET(l,r) __builtin_stwio ((l), (r))
+
+void foo1 (int x) { SET (addr1, x); }
+void foo2 (int x) { SET (addr2, x); }
+void foo3 (int x) { SET (addr3, x); }

gcc/testsuite/gcc.target/nios2/const-addr-3.c

+/* { dg-do compile } */
+/* { dg-options "-march=r2 -mno-cdx -mno-bmx -O2" } */
+/* { dg-final { scan-assembler-times "stwio\tr., 0\\(r" 2 } } */
+/* { dg-final { scan-assembler-times "stwio\tr., 528\\(r0\\)" 1 } } */
+
+/* These functions should not spill to stack.  */
+/* { dg-final { scan-assembler-not "addi\tsp, sp" } } */
+
+/* On R2, stwio takes only a 12-bit displacement so foo1 and foo2 need
+   to use register indirect addressing.  */
+
+#define addr1 ((volatile int *) 0x43210)
+#define addr2 ((volatile int *) 0x3210)
+#define addr3 ((volatile int *) 0x210)
+
+#define SET(l,r) __builtin_stwio ((l), (r))
+
+void foo1 (int x) { SET (addr1, x); }
+void foo2 (int x) { SET (addr2, x); }
+void foo3 (int x) { SET (addr3, x); }