1 files changed, 35 insertions, 3 deletions

diff --git a/mlir/lib/Target/LLVMIR/ConvertFromLLVMIR.cpp b/mlir/lib/Target/LLVMIR/ConvertFromLLVMIR.cpp
index fd4e4134d8b..6cf975bcce2 100644
--- a/mlir/lib/Target/LLVMIR/ConvertFromLLVMIR.cpp
+++ b/mlir/lib/Target/LLVMIR/ConvertFromLLVMIR.cpp
@@ -215,6 +215,37 @@ Attribute Importer::getConstantAsAttr(llvm::Constant *value) {
   return Attribute();
 }
 
+/// Converts LLVM global variable linkage type into the LLVM dialect predicate.
+static LLVM::Linkage
+processLinkage(llvm::GlobalVariable::LinkageTypes linkage) {
+  switch (linkage) {
+  case llvm::GlobalValue::PrivateLinkage:
+    return LLVM::Linkage::Private;
+  case llvm::GlobalValue::InternalLinkage:
+    return LLVM::Linkage::Internal;
+  case llvm::GlobalValue::AvailableExternallyLinkage:
+    return LLVM::Linkage::AvailableExternally;
+  case llvm::GlobalValue::LinkOnceAnyLinkage:
+    return LLVM::Linkage::Linkonce;
+  case llvm::GlobalValue::WeakAnyLinkage:
+    return LLVM::Linkage::Weak;
+  case llvm::GlobalValue::CommonLinkage:
+    return LLVM::Linkage::Common;
+  case llvm::GlobalValue::AppendingLinkage:
+    return LLVM::Linkage::Appending;
+  case llvm::GlobalValue::ExternalWeakLinkage:
+    return LLVM::Linkage::ExternWeak;
+  case llvm::GlobalValue::LinkOnceODRLinkage:
+    return LLVM::Linkage::LinkonceODR;
+  case llvm::GlobalValue::WeakODRLinkage:
+    return LLVM::Linkage::WeakODR;
+  case llvm::GlobalValue::ExternalLinkage:
+    return LLVM::Linkage::External;
+  }
+
+  llvm_unreachable("unhandled linkage type");
+}
+
 GlobalOp Importer::processGlobal(llvm::GlobalVariable *GV) {
   auto it = globals.find(GV);
   if (it != globals.end())
@@ -224,9 +255,10 @@ GlobalOp Importer::processGlobal(llvm::GlobalVariable *GV) {
   Attribute valueAttr;
   if (GV->hasInitializer())
     valueAttr = getConstantAsAttr(GV->getInitializer());
-  GlobalOp op = b.create<GlobalOp>(UnknownLoc::get(context),
-                                   processType(GV->getValueType()),
-                                   GV->isConstant(), GV->getName(), valueAttr);
+  GlobalOp op = b.create<GlobalOp>(
+      UnknownLoc::get(context), processType(GV->getValueType()),
+      GV->isConstant(), processLinkage(GV->getLinkage()), GV->getName(),
+      valueAttr);
   if (GV->hasInitializer() && !valueAttr) {
     Region &r = op.getInitializerRegion();
     currentEntryBlock = b.createBlock(&r);