diff options
Diffstat (limited to 'gcc/target.def')
| -rw-r--r-- | gcc/target.def | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/gcc/target.def b/gcc/target.def index 586522435a2..2801aea5a17 100644 --- a/gcc/target.def +++ b/gcc/target.def @@ -1298,6 +1298,37 @@ DEFHOOK tree, (tree fndecl, int n_args, tree *argp, bool ignore), hook_tree_tree_int_treep_bool_null) +/* Target hook is used to compare the target attributes in two functions to + determine which function's features get higher priority. This is used + during function multi-versioning to figure out the order in which two + versions must be dispatched. A function version with a higher priority + is checked for dispatching earlier. DECL1 and DECL2 are + the two function decls that will be compared. It returns positive value + if DECL1 is higher priority, negative value if DECL2 is higher priority + and 0 if they are the same. */ +DEFHOOK +(compare_version_priority, + "", + int, (tree decl1, tree decl2), NULL) + +/* Target hook is used to generate the dispatcher logic to invoke the right + function version at run-time for a given set of function versions. + ARG points to the callgraph node of the dispatcher function whose body + must be generated. */ +DEFHOOK +(generate_version_dispatcher_body, + "", + tree, (void *arg), NULL) + +/* Target hook is used to get the dispatcher function for a set of function + versions. The dispatcher function is called to invoke the right function + version at run-time. DECL is one version from a set of semantically + identical versions. */ +DEFHOOK +(get_function_versions_dispatcher, + "", + tree, (void *decl), NULL) + /* Returns a code for a target-specific builtin that implements reciprocal of the function, or NULL_TREE if not available. */ DEFHOOK @@ -2774,6 +2805,16 @@ DEFHOOK void, (void), hook_void_void) +/* This function returns true if DECL1 and DECL2 are versions of the same + function. DECL1 and DECL2 are function versions if and only if they + have the same function signature and different target specific attributes, + that is, they are compiled for different target machines. */ +DEFHOOK +(function_versions, + "", + bool, (tree decl1, tree decl2), + hook_bool_tree_tree_false) + /* Function to determine if one function can inline another function. */ #undef HOOK_PREFIX #define HOOK_PREFIX "TARGET_" |