Add support for LLVM 10.

backports.cpp

@@ -3,6 +3,7 @@
 #include "llvm/IR/Instructions.h"
 #include "llvm/Transforms/IPO/PassManagerBuilder.h"
 #include "llvm/Transforms/Coroutines.h"
+#include "llvm-c/DebugInfo.h"
 
 namespace llvm {
 
@@ -26,3 +27,15 @@ void LLVMGlobalObjectAddMetadata(LLVMValueRef Global, unsigned KindID, LLVMMetad
   llvm::GlobalObject *O = llvm::unwrap<llvm::GlobalObject>(Global);
   O->addMetadata(KindID, *N);
 }
+
+LLVMMetadataRef
+LLVMDIBuilderCreateTypedef_LLVM10(LLVMDIBuilderRef Builder, LLVMMetadataRef Type,
+                           const char *Name, size_t NameLen,
+                           LLVMMetadataRef File, unsigned LineNo,
+                           LLVMMetadataRef Scope, uint32_t AlignInBits) {
+#if LLVM_VERSION_MAJOR >= 10
+	return LLVMDIBuilderCreateTypedef(Builder, Type, Name, NameLen, File, LineNo, Scope, AlignInBits);
+#else
+	return LLVMDIBuilderCreateTypedef(Builder, Type, Name, NameLen, File, LineNo, Scope);
+#endif
+}

backports.h

@@ -10,6 +10,11 @@ void LLVMPassManagerBuilderAddCoroutinePassesToExtensionPoints_backport(LLVMPass
 
 void LLVMGlobalObjectAddMetadata(LLVMValueRef objValue, unsigned KindID, LLVMMetadataRef md);
 
+LLVMMetadataRef
+LLVMDIBuilderCreateTypedef_LLVM10(LLVMDIBuilderRef Builder, LLVMMetadataRef Type,
+                           const char *Name, size_t NameLen,
+                           LLVMMetadataRef File, unsigned LineNo,
+                           LLVMMetadataRef Scope, uint32_t AlignInBits);
 #ifdef __cplusplus
 }
 #endif /* defined(__cplusplus) */

dibuilder.go

@@ -45,7 +45,7 @@ const (
 	FlagProtected
 	FlagFwdDecl
 	FlagAppleBlock
-	FlagBlockByrefStruct
+	FlagReserved
 	FlagVirtual
 	FlagArtificial
 	FlagExplicit
@@ -537,25 +537,27 @@ func (d *DIBuilder) CreateArrayType(t DIArrayType) Metadata {
 
 // DITypedef holds the values for creating typedef type debug metadata.
 type DITypedef struct {
-	Type    Metadata
-	Name    string
-	File    Metadata
-	Line    int
-	Context Metadata
+	Type        Metadata
+	Name        string
+	File        Metadata
+	Line        int
+	Context     Metadata
+	AlignInBits uint32
 }
 
 // CreateTypedef creates typedef type debug metadata.
 func (d *DIBuilder) CreateTypedef(t DITypedef) Metadata {
 	name := C.CString(t.Name)
 	defer C.free(unsafe.Pointer(name))
-	result := C.LLVMDIBuilderCreateTypedef(
+	result := C.LLVMDIBuilderCreateTypedef_LLVM10(
 		d.ref,
 		t.Type.C,
 		name,
 		C.size_t(len(t.Name)),
 		t.File.C,
 		C.unsigned(t.Line),
 		t.Context.C,
+		C.uint32_t(t.AlignInBits),
 	)
 	return Metadata{C: result}
 }