[MLIR] should use dso_local

Author: ghehg

mlir/lib/Target/LLVMIR/ModuleImport.cpp

@@ -2128,7 +2128,7 @@ LogicalResult ModuleImport::processFunction(llvm::Function *func) {
       iface.isConvertibleIntrinsic(func->getIntrinsicID()))
     return success();
 
-  bool dsoLocal = func->hasLocalLinkage();
+  bool dsoLocal = func->isDSOLocal();
   CConv cconv = convertCConvFromLLVM(func->getCallingConv());
 
   // Insert the function at the end of the module.

mlir/test/Target/LLVMIR/Import/function-attributes.ll

@@ -10,6 +10,12 @@ define internal spir_func void @spir_func_internal() {
   ret void
 }
 
+; Ensure that we have dso_local;
+; CHECK : llvm.func @dsolocal_func() attributes{dso_local}
+define dso_local void @dsolocal_func() {
+  ret void
+}
+
 ; // -----
 
 ; CHECK-LABEL: @func_readnone