Add a new function, ctf_lookup_tree_type, to return the CTF type ID
associated with a type via its is TREE node. The function is exposed via
a prototype in ctfc.h.
gcc/ChangeLog:
* ctfc.c (ctf_lookup_tree_type): New function.
* ctfc.h: Likewise.
---
gcc/ctfc.c | 16 ++++++++++++++++
gcc/ctfc.h | 2 ++
2 files changed, 18 insertions(+)
diff --git a/gcc/ctfc.c b/gcc/ctfc.c
index db6ba030301..73c118e3d49 100644
--- a/gcc/ctfc.c
+++ b/gcc/ctfc.c
@@ -791,6 +791,22 @@ ctf_add_sou (ctf_container_ref ctfc, uint32_t flag, const
char * name,
return type;
}
+/* Given a TREE_TYPE node, return the CTF type ID for that type. */
+
+ctf_id_t
+ctf_lookup_tree_type (ctf_container_ref ctfc, const tree type)
+{
+ dw_die_ref die = lookup_type_die (type);
+ if (die == NULL)
+ return CTF_NULL_TYPEID;
+
+ ctf_dtdef_ref dtd = ctf_dtd_lookup (ctfc, die);
+ if (dtd == NULL)
+ return CTF_NULL_TYPEID;
+
+ return dtd->dtd_type;
+}
+
/* Check if CTF for TYPE has already been generated. Mainstay for
de-duplication. If CTF type already exists, returns TRUE and updates
the TYPE_ID for the caller. */
diff --git a/gcc/ctfc.h b/gcc/ctfc.h
index 825570d807e..14180c1e5de 100644
--- a/gcc/ctfc.h
+++ b/gcc/ctfc.h
@@ -430,6 +430,8 @@ extern int ctf_add_function_arg (ctf_container_ref,
dw_die_ref,
extern int ctf_add_variable (ctf_container_ref, const char *, ctf_id_t,
dw_die_ref, unsigned int);
+extern ctf_id_t ctf_lookup_tree_type (ctf_container_ref, const tree);
+
/* CTF section does not emit location information; at this time, location
information is needed for BTF CO-RE use-cases. */
--
2.32.0
