atomic-inst-cas.c: New.

	* gcc.target/aarch64/atomic-inst-cas.c: New.
	* gcc.target/aarch64/atomic-inst-ops.inc: New.

From-SVN: r226859

gcc/testsuite/ChangeLog

+2015-08-13  Matthew Wahab  <matthew.wahab@arm.com>
+
+	* gcc.target/aarch64/atomic-inst-cas.c: New.
+	* gcc.target/aarch64/atomic-inst-ops.inc: New.
+
 2015-08-13  Andreas Schwab  <schwab@suse.de>
 
 	* gcc.dg/tree-ssa/vrp33.c: Add -fno-tree-fre.

gcc/testsuite/gcc.target/aarch64/atomic-inst-cas.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -march=armv8-a+lse" } */
+
+/* Test ARMv8.1-A CAS instruction.  */
+
+#include "atomic-inst-ops.inc"
+
+#define TEST TEST_TWO
+
+#define CAS_ATOMIC(FN, TY, MODEL1, MODEL2)				\
+  int FNNAME (FN, TY) (TY* val, TY* foo, TY* bar)			\
+  {									\
+    int model_s = MODEL1;						\
+    int model_f = MODEL2;						\
+    /* The success memory ordering must be at least as strong as	\
+       the failure memory ordering.  */					\
+    if (model_s < model_f)						\
+      return 0;								\
+    /* Ignore invalid memory orderings.  */				\
+    if (model_f == __ATOMIC_RELEASE || model_f == __ATOMIC_ACQ_REL)	\
+      return 0;								\
+    return __atomic_compare_exchange_n (val, foo, bar, 0, model_s, model_f); \
+  }
+
+#define CAS_ATOMIC_NORETURN(FN, TY, MODEL1, MODEL2)			\
+  void FNNAME (FN, TY) (TY* val, TY* foo, TY* bar)			\
+  {									\
+    int model_s = MODEL1;						\
+    int model_f = MODEL2;						\
+    /* The success memory ordering must be at least as strong as	\
+       the failure memory ordering.  */					\
+    if (model_s < model_f)						\
+      return;								\
+    /* Ignore invalid memory orderings.  */				\
+    if (model_f == __ATOMIC_RELEASE || model_f == __ATOMIC_ACQ_REL)	\
+      return;								\
+    __atomic_compare_exchange_n (val, foo, bar, 0, model_s, model_f);	\
+  }
+
+TEST (cas_atomic, CAS_ATOMIC)
+TEST (cas_atomic_noreturn, CAS_ATOMIC_NORETURN)
+
+
+/* { dg-final { scan-assembler-times "casb\t" 4} } */
+/* { dg-final { scan-assembler-times "casab\t" 20} } */
+/* { dg-final { scan-assembler-times "caslb\t" 4} } */
+/* { dg-final { scan-assembler-times "casalb\t" 36} } */
+
+/* { dg-final { scan-assembler-times "cash\t" 4} } */
+/* { dg-final { scan-assembler-times "casah\t" 20} } */
+/* { dg-final { scan-assembler-times "caslh\t" 4} } */
+/* { dg-final { scan-assembler-times "casalh\t" 36} } */
+
+/* { dg-final { scan-assembler-times "cas\t" 8} } */
+/* { dg-final { scan-assembler-times "casa\t" 40} } */
+/* { dg-final { scan-assembler-times "casl\t" 8} } */
+/* { dg-final { scan-assembler-times "casal\t" 72} } */
+
+/* { dg-final { scan-assembler-not "ldaxr\t" } } */
+/* { dg-final { scan-assembler-not "stlxr\t" } } */
+/* { dg-final { scan-assembler-not "dmb" } } */

gcc/testsuite/gcc.target/aarch64/atomic-inst-ops.inc

+/* Support code for atomic instruction tests.  */
+
+/* Define types names without spaces.  */
+typedef unsigned char uchar;
+typedef unsigned short ushort;
+typedef unsigned int uint;
+typedef long long longlong;
+typedef unsigned long long ulonglong;
+typedef __int128_t int128;
+typedef __uint128_t uint128;
+
+#define FNNAME(NAME,TY) NAME
+
+/* Expand one-model functions.  */
+#define TEST_M1(NAME, FN, TY, MODEL, DUMMY)	\
+  FN (test_##NAME##_##TY, TY, MODEL)
+
+/* Expand two-model functions.  */
+#define TEST_M2(NAME, FN, TY, MODEL1, MODEL2)	\
+  FN (test_##NAME##_##TY, TY, MODEL1, MODEL2)
+
+/* Typest to test.  */
+#define TEST_TY(NAME, FN, N, MODEL1, MODEL2)		\
+  TEST_M##N (NAME, FN, char, MODEL1, MODEL2)		\
+  TEST_M##N (NAME, FN, uchar, MODEL1, MODEL2)		\
+  TEST_M##N (NAME, FN, short, MODEL1, MODEL2)		\
+  TEST_M##N (NAME, FN, ushort, MODEL1, MODEL2)		\
+  TEST_M##N (NAME, FN, int, MODEL1, MODEL2)		\
+  TEST_M##N (NAME, FN, uint, MODEL1, MODEL2)		\
+  TEST_M##N (NAME, FN, longlong, MODEL1, MODEL2)	\
+  TEST_M##N (NAME, FN, ulonglong, MODEL1, MODEL2)	\
+  TEST_M##N (NAME, FN, int128, MODEL1, MODEL2)		\
+  TEST_M##N (NAME, FN, uint128, MODEL1, MODEL2)
+
+/* Cross-product of models to test.  */
+#define TEST_MODEL_M1(NAME, FN, N, M)			\
+  TEST_TY (NAME##_relaxed, FN, N, M, __ATOMIC_RELAXED)	\
+  TEST_TY (NAME##_consume, FN, N, M, __ATOMIC_CONSUME)	\
+  TEST_TY (NAME##_acquire, FN, N, M, __ATOMIC_ACQUIRE)	\
+  TEST_TY (NAME##_release, FN, N, M, __ATOMIC_RELEASE)	\
+  TEST_TY (NAME##_acq_rel, FN, N, M, __ATOMIC_ACQ_REL)	\
+  TEST_TY (NAME##_seq_cst, FN, N, M, __ATOMIC_SEQ_CST)	\
+
+#define TEST_MODEL_M2(NAME, FN)					\
+  TEST_MODEL_M1 (NAME##_relaxed, FN, 2, __ATOMIC_RELAXED)	\
+  TEST_MODEL_M1 (NAME##_consume, FN, 2, __ATOMIC_CONSUME)	\
+  TEST_MODEL_M1 (NAME##_acquire, FN, 2, __ATOMIC_ACQUIRE)	\
+  TEST_MODEL_M1 (NAME##_release, FN, 2, __ATOMIC_RELEASE)	\
+  TEST_MODEL_M1 (NAME##_acq_rel, FN, 2, __ATOMIC_ACQ_REL)	\
+  TEST_MODEL_M1 (NAME##_seq_cst, FN, 2, __ATOMIC_SEQ_CST)	\
+
+/* Expand functions for a cross-product of memory models and types.  */
+#define TEST_TWO(NAME, FN) TEST_MODEL_M2 (NAME, FN)