1 files changed, 46 insertions, 8 deletions
diff --git a/src/rustllvm/RustWrapper.cpp b/src/rustllvm/RustWrapper.cpp
index ae2ab932a61..5d5845213e2 100644
--- a/src/rustllvm/RustWrapper.cpp
+++ b/src/rustllvm/RustWrapper.cpp
@@ -150,6 +150,8 @@ from_rust(LLVMRustAttribute kind) {
       return Attribute::UWTable;
     case ZExt:
       return Attribute::ZExt;
+    case InReg:
+      return Attribute::InReg;
     default:
       llvm_unreachable("bad AttributeKind");
   }
@@ -552,8 +554,13 @@ extern "C" LLVMRustMetadataRef LLVMRustDIBuilderCreateBasicType(
     uint64_t AlignInBits,
     unsigned Encoding) {
     return wrap(Builder->createBasicType(
-        Name, SizeInBits,
-        AlignInBits, Encoding));
+        Name,
+        SizeInBits,
+#if LLVM_VERSION_LE(3, 9)
+        AlignInBits,
+#endif
+        Encoding
+    ));
 }
 
 extern "C" LLVMRustMetadataRef LLVMRustDIBuilderCreatePointerType(
@@ -645,7 +652,21 @@ extern "C" LLVMRustMetadataRef LLVMRustDIBuilderCreateStaticVariable(
     LLVMRustMetadataRef Ty,
     bool isLocalToUnit,
     LLVMValueRef Val,
-    LLVMRustMetadataRef Decl = NULL) {
+    LLVMRustMetadataRef Decl = NULL,
+    uint64_t AlignInBits = 0) {
+    Constant *InitVal = cast<Constant>(unwrap(Val));
+
+#if LLVM_VERSION_GE(4, 0)
+    llvm::DIExpression *InitExpr = nullptr;
+    if (llvm::ConstantInt *IntVal = llvm::dyn_cast<llvm::ConstantInt>(InitVal)) {
+      InitExpr = Builder->createConstantValueExpression(
+          IntVal->getValue().getSExtValue());
+    } else if (llvm::ConstantFP *FPVal = llvm::dyn_cast<llvm::ConstantFP>(InitVal)) {
+        InitExpr = Builder->createConstantValueExpression(
+                FPVal->getValueAPF().bitcastToAPInt().getZExtValue());
+    }
+#endif
+
     return wrap(Builder->createGlobalVariable(unwrapDI<DIDescriptor>(Context),
         Name,
         LinkageName,
@@ -653,8 +674,16 @@ extern "C" LLVMRustMetadataRef LLVMRustDIBuilderCreateStaticVariable(
         LineNo,
         unwrapDI<DIType>(Ty),
         isLocalToUnit,
-        cast<Constant>(unwrap(Val)),
-        unwrapDIptr<MDNode>(Decl)));
+#if LLVM_VERSION_GE(4, 0)
+        InitExpr,
+#else
+        InitVal,
+#endif
+        unwrapDIptr<MDNode>(Decl)
+#if LLVM_VERSION_GE(4, 0)
+        , AlignInBits
+#endif
+    ));
 }
 
 extern "C" LLVMRustMetadataRef LLVMRustDIBuilderCreateVariable(
@@ -667,14 +696,23 @@ extern "C" LLVMRustMetadataRef LLVMRustDIBuilderCreateVariable(
     LLVMRustMetadataRef Ty,
     bool AlwaysPreserve,
     LLVMRustDIFlags Flags,
-    unsigned ArgNo) {
+    unsigned ArgNo,
+    uint64_t AlignInBits)
+{
 #if LLVM_VERSION_GE(3, 8)
     if (Tag == 0x100) { // DW_TAG_auto_variable
         return wrap(Builder->createAutoVariable(
-            unwrapDI<DIDescriptor>(Scope), Name,
+            unwrapDI<DIDescriptor>(Scope),
+            Name,
             unwrapDI<DIFile>(File),
             LineNo,
-            unwrapDI<DIType>(Ty), AlwaysPreserve, from_rust(Flags)));
+            unwrapDI<DIType>(Ty),
+            AlwaysPreserve,
+            from_rust(Flags)
+#if LLVM_VERSION_GE(4,0)
+            , AlignInBits
+#endif
+        ));
     } else {
         return wrap(Builder->createParameterVariable(
             unwrapDI<DIDescriptor>(Scope), Name, ArgNo,