Rollup merge of #101389 - lukaslueg:rcgetmutdocs, r=m-ou-se

[rust.git] / compiler / rustc_codegen_llvm / src / type_.rs

diff --git a/compiler/rustc_codegen_llvm/src/type_.rs b/compiler/rustc_codegen_llvm/src/type_.rs
index cf2d3c423c335f6e1a674efcd7907e6c7ce994f1..eeb38d4ecf591db659db4b03fcde8f1569ac5d3e 100644 (file)
--- a/compiler/rustc_codegen_llvm/src/type_.rs
+++ b/compiler/rustc_codegen_llvm/src/type_.rs
@@ -19,7 +19,7 @@
 use std::fmt;
 use std::ptr;
 
-use libc::c_uint;
+use libc::{c_char, c_uint};
 
 impl PartialEq for Type {
     fn eq(&self, other: &Self) -> bool {
@@ -289,3 +289,31 @@ fn reg_backend_type(&self, ty: &Reg) -> &'ll Type {
         ty.llvm_type(self)
     }
 }
+
+impl<'ll, 'tcx> TypeMembershipMethods<'tcx> for CodegenCx<'ll, 'tcx> {
+    fn set_type_metadata(&self, function: &'ll Value, typeid: String) {
+        let typeid_metadata = self.typeid_metadata(typeid);
+        let v = [self.const_usize(0), typeid_metadata];
+        unsafe {
+            llvm::LLVMGlobalSetMetadata(
+                function,
+                llvm::MD_type as c_uint,
+                llvm::LLVMValueAsMetadata(llvm::LLVMMDNodeInContext(
+                    self.llcx,
+                    v.as_ptr(),
+                    v.len() as c_uint,
+                )),
+            )
+        }
+    }
+
+    fn typeid_metadata(&self, typeid: String) -> &'ll Value {
+        unsafe {
+            llvm::LLVMMDStringInContext(
+                self.llcx,
+                typeid.as_ptr() as *const c_char,
+                typeid.len() as c_uint,
+            )
+        }
+    }
+}