commit f3c5c9df8bb5a26a7df65e7b68d9eb6f60eccb40
Author: Kyrylo Tkachov <kyrylo.tkachov@arm.com>
Date: Thu May 7 14:06:04 2015 +0100
[AArch64][7/N] Implement TARGET_SET_CURRENT_FUNCTION
@@ -73,6 +73,7 @@
#include "tm-constrs.h"
#include "sched-int.h"
#include "cortex-a57-fma-steering.h"
+#include "target-globals.h"
/* This file should be included last. */
#include "target-def.h"
@@ -7927,6 +7928,58 @@ aarch64_option_print (FILE *file, int indent, struct cl_target_option *ptr)
aarch64_print_extension (file, isa_flags);
}
+static GTY(()) tree aarch64_previous_fndecl;
+
+/* Implement TARGET_SET_CURRENT_FUNCTION. Unpack the codegen decisions
+ like tuning and ISA features from the DECL_FUNCTION_SPECIFIC_TARGET
+ of the function, if such exists. This function may be called multiple
+ times on a single function so use aarch64_previous_fndecl to avoid
+ setting up identical state. */
+
+static void
+aarch64_set_current_function (tree fndecl)
+{
+ tree old_tree = (aarch64_previous_fndecl
+ ? DECL_FUNCTION_SPECIFIC_TARGET (aarch64_previous_fndecl)
+ : NULL_TREE);
+
+ tree new_tree = (fndecl
+ ? DECL_FUNCTION_SPECIFIC_TARGET (fndecl)
+ : NULL_TREE);
+
+
+ if (fndecl && fndecl != aarch64_previous_fndecl)
+ {
+ aarch64_previous_fndecl = fndecl;
+ if (old_tree == new_tree)
+ ;
+
+ else if (new_tree && new_tree != target_option_default_node)
+ {
+ cl_target_option_restore (&global_options,
+ TREE_TARGET_OPTION (new_tree));
+ if (TREE_TARGET_GLOBALS (new_tree))
+ restore_target_globals (TREE_TARGET_GLOBALS (new_tree));
+ else
+ TREE_TARGET_GLOBALS (new_tree)
+ = save_target_globals_default_opts ();
+ }
+
+ else if (old_tree && old_tree != target_option_default_node)
+ {
+ new_tree = target_option_current_node;
+ cl_target_option_restore (&global_options,
+ TREE_TARGET_OPTION (new_tree));
+ if (TREE_TARGET_GLOBALS (new_tree))
+ restore_target_globals (TREE_TARGET_GLOBALS (new_tree));
+ else if (new_tree == target_option_default_node)
+ restore_target_globals (&default_target_globals);
+ else
+ TREE_TARGET_GLOBALS (new_tree)
+ = save_target_globals_default_opts ();
+ }
+ }
+}
/* Return true if SYMBOL_REF X binds locally. */
@@ -12399,6 +12452,9 @@ aarch64_unspec_may_trap_p (const_rtx x, unsigned flags)
#undef TARGET_OPTION_PRINT
#define TARGET_OPTION_PRINT aarch64_option_print
+#undef TARGET_SET_CURRENT_FUNCTION
+#define TARGET_SET_CURRENT_FUNCTION aarch64_set_current_function
+
#undef TARGET_PASS_BY_REFERENCE
#define TARGET_PASS_BY_REFERENCE aarch64_pass_by_reference
@@ -920,6 +920,9 @@ do { \
#define HARD_REGNO_CALL_PART_CLOBBERED(REGNO, MODE) \
(FP_REGNUM_P (REGNO) && GET_MODE_SIZE (MODE) > 8)
+#undef SWITCHABLE_TARGET
+#define SWITCHABLE_TARGET 1
+
/* Check TLS Descriptors mechanism is selected. */
#define TARGET_TLS_DESC (aarch64_tls_dialect == TLS_DESCRIPTORS)