[PATCH][AARCH64]Add ACLE arch-related predefined macros

[Renlin Li]

Hi all,

This is a simple patch to add arch-related macros defined ACLE 2.0.
aarch64-none-elf target is tested on the model, no new issues.

Is this Okay for trunk?

gcc/ChangeLog:

2014-10-31  Renlin Li  <renlin...@arm.com>

    * config/aarch64/aarch64.c (aarch64_architecture_version): New.
    (processor): New architecture_version field.
    (aarch64_override_options): Initialize aarch64_architecture_version.
    * config/aarch64/aarch64.h (TARGET_CPU_CPP_BUILTINS): Define 
__ARM_ARCH,
    __ARM_ARCH_PROFILE, aarch64_arch_name macro.
diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index b94f450..5af4e14 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -145,6 +145,9 @@ static bool aarch64_vectorize_vec_perm_const_ok (enum machine_mode vmode,
 						 const unsigned char *sel);
 static int aarch64_address_cost (rtx, enum machine_mode, addr_space_t, bool);
 
+/* Major revision number of the ARM Architecture implemented by the target.  */
+unsigned aarch64_architecture_version;
+
 /* The processor for which instructions should be scheduled.  */
 enum aarch64_processor aarch64_tune = cortexa53;
 
@@ -339,6 +342,7 @@ struct processor
   const char *const name;
   enum aarch64_processor core;
   const char *arch;
+  unsigned architecture_version;
   const unsigned long flags;
   const struct tune_params *const tune;
 };
@@ -347,21 +351,23 @@ struct processor
 static const struct processor all_cores[] =
 {
 #define AARCH64_CORE(NAME, X, IDENT, ARCH, FLAGS, COSTS) \
-  {NAME, IDENT, #ARCH, FLAGS | AARCH64_FL_FOR_ARCH##ARCH, &COSTS##_tunings},
+  {NAME, IDENT, #ARCH, ARCH,\
+    FLAGS | AARCH64_FL_FOR_ARCH##ARCH, &COSTS##_tunings},
 #include "aarch64-cores.def"
 #undef AARCH64_CORE
-  {"generic", cortexa53, "8", AARCH64_FL_FPSIMD | AARCH64_FL_FOR_ARCH8, &generic_tunings},
-  {NULL, aarch64_none, NULL, 0, NULL}
+  {"generic", cortexa53, "8", 8,\
+    AARCH64_FL_FPSIMD | AARCH64_FL_FOR_ARCH8, &generic_tunings},
+  {NULL, aarch64_none, NULL, 0, 0, NULL}
 };
 
 /* Architectures implementing AArch64.  */
 static const struct processor all_architectures[] =
 {
 #define AARCH64_ARCH(NAME, CORE, ARCH, FLAGS) \
-  {NAME, CORE, #ARCH, FLAGS, NULL},
+  {NAME, CORE, #ARCH, ARCH, FLAGS, NULL},
 #include "aarch64-arches.def"
 #undef AARCH64_ARCH
-  {NULL, aarch64_none, NULL, 0, NULL}
+  {NULL, aarch64_none, NULL, 0, 0, NULL}
 };
 
 /* Target specification.  These are populated as commandline arguments
@@ -6449,6 +6455,7 @@ aarch64_override_options (void)
   aarch64_tune_flags = selected_tune->flags;
   aarch64_tune = selected_tune->core;
   aarch64_tune_params = selected_tune->tune;
+  aarch64_architecture_version = selected_cpu->architecture_version;
 
   if (aarch64_fix_a53_err835769 == 2)
     {
diff --git a/gcc/config/aarch64/aarch64.h b/gcc/config/aarch64/aarch64.h
index 11aa10b..ed38b85 100644
--- a/gcc/config/aarch64/aarch64.h
+++ b/gcc/config/aarch64/aarch64.h
@@ -28,7 +28,13 @@
     {							\
       builtin_define ("__aarch64__");                   \
       builtin_define ("__ARM_64BIT_STATE");             \
+      builtin_define_with_int_value                     \
+        ("__ARM_ARCH", aarch64_architecture_version);   \
+      cpp_define_formatted                                              \
+        (parse_in, "__ARM_ARCH_%dA", aarch64_architecture_version);     \
       builtin_define ("__ARM_ARCH_ISA_A64");            \
+      builtin_define_with_int_value                     \
+        ("__ARM_ARCH_PROFILE", 'A');                    \
       builtin_define ("__ARM_FEATURE_CLZ");             \
       builtin_define ("__ARM_FEATURE_IDIV");            \
       builtin_define ("__ARM_FEATURE_UNALIGNED");       \
@@ -172,6 +178,8 @@
 
 #define PCC_BITFIELD_TYPE_MATTERS	1
 
+/* Major revision number of the ARM Architecture implemented by the target.  */
+extern unsigned aarch64_architecture_version;
 
 /* Instruction tuning/selection flags.  */