From c44943ed4f4f2d44b6668e6b51eb355f8310660c Mon Sep 17 00:00:00 2001
From: Torok Edwin <edwintorok@gmail.com>
Date: Thu, 6 Oct 2011 12:12:50 +0000
Subject: [PATCH] C/OCaml API to retrieve struct name.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141285 91177308-0d34-0410-b5e6-96231b3b80d8
---
 bindings/ocaml/llvm/llvm.ml      |  1 +
 bindings/ocaml/llvm/llvm.mli     |  4 ++++
 bindings/ocaml/llvm/llvm_ocaml.c | 14 ++++++++++++++
 include/llvm-c/Core.h            |  1 +
 lib/VMCore/Core.cpp              |  8 ++++++++
 5 files changed, 28 insertions(+)

diff --git a/bindings/ocaml/llvm/llvm.ml b/bindings/ocaml/llvm/llvm.ml
index e335eb8d39d..e46ea040d92 100644
--- a/bindings/ocaml/llvm/llvm.ml
+++ b/bindings/ocaml/llvm/llvm.ml
@@ -197,6 +197,7 @@ external param_types : lltype -> lltype array = "llvm_param_types"
 external struct_type : llcontext -> lltype array -> lltype = "llvm_struct_type"
 external packed_struct_type : llcontext -> lltype array -> lltype
                             = "llvm_packed_struct_type"
+external struct_name : lltype -> string option = "llvm_struct_name"
 external struct_element_types : lltype -> lltype array
                               = "llvm_struct_element_types"
 external is_packed : lltype -> bool = "llvm_is_packed"
diff --git a/bindings/ocaml/llvm/llvm.mli b/bindings/ocaml/llvm/llvm.mli
index ef7c986e91c..c0701701344 100644
--- a/bindings/ocaml/llvm/llvm.mli
+++ b/bindings/ocaml/llvm/llvm.mli
@@ -372,6 +372,10 @@ val struct_type : llcontext -> lltype array -> lltype
     [llvm::StructType::get]. *)
 val packed_struct_type : llcontext -> lltype array -> lltype
 
+(** [struct_name ty] returns the name of the named structure type [ty],
+ * or None if the structure type is not named *)
+val struct_name : lltype -> string option
+
 
 (** [struct_element_types sty] returns the constituent types of the struct type
     [sty]. See the method [llvm::StructType::getElementType]. *)
diff --git a/bindings/ocaml/llvm/llvm_ocaml.c b/bindings/ocaml/llvm/llvm_ocaml.c
index 1c1a526fd71..28f0977aba2 100644
--- a/bindings/ocaml/llvm/llvm_ocaml.c
+++ b/bindings/ocaml/llvm/llvm_ocaml.c
@@ -287,6 +287,20 @@ CAMLprim LLVMTypeRef llvm_packed_struct_type(LLVMContextRef C,
                                  Wosize_val(ElementTypes), 1);
 }
 
+/* lltype -> string option */
+CAMLprim value llvm_struct_name(LLVMTypeRef Ty)
+{
+    CAMLparam0();
+    const char *C = LLVMGetStructName(Ty);
+    if (C) {
+	CAMLlocal1(result);
+	result = caml_alloc_small(1, 0);
+	Store_field(result, 0, caml_copy_string(C));
+	CAMLreturn(result);
+    }
+    CAMLreturn(Val_int(0));
+}
+
 /* lltype -> lltype array */
 CAMLprim value llvm_struct_element_types(LLVMTypeRef StructTy) {
   value Tys = alloc(LLVMCountStructElementTypes(StructTy), 0);
diff --git a/include/llvm-c/Core.h b/include/llvm-c/Core.h
index 84ddfbcf890..4569109b7cb 100644
--- a/include/llvm-c/Core.h
+++ b/include/llvm-c/Core.h
@@ -403,6 +403,7 @@ LLVMTypeRef LLVMStructTypeInContext(LLVMContextRef C, LLVMTypeRef *ElementTypes,
 LLVMTypeRef LLVMStructType(LLVMTypeRef *ElementTypes, unsigned ElementCount,
                            LLVMBool Packed);
 LLVMTypeRef LLVMStructCreateNamed(LLVMContextRef C, const char *Name);
+const char *LLVMGetStructName(LLVMTypeRef Ty);
 void LLVMStructSetBody(LLVMTypeRef StructTy, LLVMTypeRef *ElementTypes,
                        unsigned ElementCount, LLVMBool Packed);
 
diff --git a/lib/VMCore/Core.cpp b/lib/VMCore/Core.cpp
index e2b659b6a2b..8560de4455c 100644
--- a/lib/VMCore/Core.cpp
+++ b/lib/VMCore/Core.cpp
@@ -302,6 +302,14 @@ LLVMTypeRef LLVMStructCreateNamed(LLVMContextRef C, const char *Name)
   return wrap(StructType::create(*unwrap(C), Name));
 }
 
+const char *LLVMGetStructName(LLVMTypeRef Ty)
+{
+    StructType *Type = unwrap<StructType>(Ty);
+    if (!Type->hasName())
+	return 0;
+    return Type->getName().data();
+}
+
 void LLVMStructSetBody(LLVMTypeRef StructTy, LLVMTypeRef *ElementTypes,
                        unsigned ElementCount, LLVMBool Packed) {
   ArrayRef<Type*> Tys(unwrap(ElementTypes), ElementCount);
-- 
2.34.1