diff --git a/mlir/lib/Dialect/LLVMIR/IR/LLVMInlining.cpp b/mlir/lib/Dialect/LLVMIR/IR/LLVMInlining.cpp
--- a/mlir/lib/Dialect/LLVMIR/IR/LLVMInlining.cpp
+++ b/mlir/lib/Dialect/LLVMIR/IR/LLVMInlining.cpp
@@ -245,16 +245,6 @@
                                  targetAlignment);
 }
 
-/// Returns true if the given argument or result attribute is supported by the
-/// inliner, false otherwise.
-static bool isArgOrResAttrSupported(NamedAttribute attr) {
-  if (attr.getName() == LLVM::LLVMDialect::getInAllocaAttrName())
-    return false;
-  if (attr.getName() == LLVM::LLVMDialect::getNoAliasAttrName())
-    return false;
-  return true;
-}
-
 namespace {
 struct LLVMInlinerInterface : public DialectInlinerInterface {
   using DialectInlinerInterface::DialectInlinerInterface;
@@ -287,27 +277,13 @@
                  << "Cannot inline: callable is not an LLVM::LLVMFuncOp\n");
       return false;
     }
+    // TODO: Generate aliasing metadata from noalias argument/result attributes.
     if (auto attrs = funcOp.getArgAttrs()) {
       for (DictionaryAttr attrDict : attrs->getAsRange<DictionaryAttr>()) {
-        for (NamedAttribute attr : attrDict) {
-          if (!isArgOrResAttrSupported(attr)) {
-            LLVM_DEBUG(llvm::dbgs() << "Cannot inline " << funcOp.getSymName()
-                                    << ": unhandled argument attribute "
-                                    << attr.getName() << "\n");
-            return false;
-          }
-        }
-      }
-    }
-    if (auto attrs = funcOp.getResAttrs()) {
-      for (DictionaryAttr attrDict : attrs->getAsRange<DictionaryAttr>()) {
-        for (NamedAttribute attr : attrDict) {
-          if (!isArgOrResAttrSupported(attr)) {
-            LLVM_DEBUG(llvm::dbgs() << "Cannot inline " << funcOp.getSymName()
-                                    << ": unhandled return attribute "
-                                    << attr.getName() << "\n");
-            return false;
-          }
+        if (attrDict.contains(LLVM::LLVMDialect::getInAllocaAttrName())) {
+          LLVM_DEBUG(llvm::dbgs() << "Cannot inline " << funcOp.getSymName()
+                                  << ": inalloca arguments not supported\n");
+          return false;
         }
       }
     }
diff --git a/mlir/test/Dialect/LLVMIR/inlining.mlir b/mlir/test/Dialect/LLVMIR/inlining.mlir
--- a/mlir/test/Dialect/LLVMIR/inlining.mlir
+++ b/mlir/test/Dialect/LLVMIR/inlining.mlir
@@ -564,7 +564,7 @@
 
 // -----
 
-llvm.func @ignored_attrs(%ptr : !llvm.ptr { llvm.inreg, llvm.nocapture, llvm.nofree, llvm.preallocated = i32, llvm.returned, llvm.alignstack = 32 : i64, llvm.writeonly, llvm.noundef, llvm.nonnull }, %x : i32 { llvm.zeroext }) -> (!llvm.ptr { llvm.noundef, llvm.inreg, llvm.nonnull }) {
+llvm.func @ignored_attrs(%ptr : !llvm.ptr { llvm.inreg, llvm.noalias, llvm.nocapture, llvm.nofree, llvm.preallocated = i32, llvm.returned, llvm.alignstack = 32 : i64, llvm.writeonly, llvm.noundef, llvm.nonnull }, %x : i32 { llvm.zeroext }) -> (!llvm.ptr { llvm.noundef, llvm.inreg, llvm.nonnull }) {
   llvm.return %ptr : !llvm.ptr
 }
 
@@ -578,7 +578,7 @@
 
 // -----
 
-llvm.func @disallowed_arg_attr(%ptr : !llvm.ptr { llvm.noalias }) {
+llvm.func @disallowed_arg_attr(%ptr : !llvm.ptr { llvm.inalloca = i64 }) {
   llvm.return
 }
 
@@ -588,16 +588,3 @@
   llvm.call @disallowed_arg_attr(%ptr) : (!llvm.ptr) -> ()
   llvm.return
 }
-
-// -----
-
-llvm.func @disallowed_res_attr(%ptr : !llvm.ptr) -> (!llvm.ptr { llvm.noalias }) {
-  llvm.return %ptr : !llvm.ptr
-}
-
-// CHECK-LABEL: @test_disallow_res_attr
-// CHECK-NEXT: llvm.call
-llvm.func @test_disallow_res_attr(%ptr : !llvm.ptr) {
-  llvm.call @disallowed_res_attr(%ptr) : (!llvm.ptr) -> (!llvm.ptr)
-  llvm.return
-}