diff --git a/external/iree-dialects/BUILD b/external/iree-dialects/BUILD
index dc824479c..429aab784 100644
--- a/external/iree-dialects/BUILD
+++ b/external/iree-dialects/BUILD
@@ -2,6 +2,7 @@ load("@llvm-project//mlir:tblgen.bzl", "gentbl_cc_library", "td_library")
 
 package(
     default_visibility = ["//visibility:public"],
+    features = ["layering_check"],
     licenses = ["notice"],
 )
 
@@ -65,7 +66,9 @@ cc_library(
     includes = ["include"],
     deps = [
         ":IREEOpsIncGen",
+        "@llvm-project//llvm:Support",
         "@llvm-project//mlir:IR",
+        "@llvm-project//mlir:Support",
     ],
 )
 
diff --git a/external/iree-dialects/build_tools/build_standalone.sh b/external/iree-dialects/build_tools/build_standalone.sh
old mode 100644
new mode 100755
diff --git a/external/iree-dialects/include/iree-dialects/Dialect/IREE/IREEBase.td b/external/iree-dialects/include/iree-dialects/Dialect/IREE/IREEBase.td
index 09e655ea4..3194b5147 100644
--- a/external/iree-dialects/include/iree-dialects/Dialect/IREE/IREEBase.td
+++ b/external/iree-dialects/include/iree-dialects/Dialect/IREE/IREEBase.td
@@ -92,8 +92,8 @@ def IREE_Dims : Variadic<IREE_Dim>;
 def IREE_Shape : Variadic<IREE_Dim>;
 def IREE_ShapeDynamicDims : Variadic<IREE_Dim>;
 
-def IREE_VariableRefAttr : IREE_AliasedSymbolRefAttr;
-def IREE_VariablePtr : IREE_AnyPtrOf<[IREE_Tensor, IREE_PrimitiveType]>;
+def IREE_GlobalRefAttr : IREE_AliasedSymbolRefAttr;
+def IREE_AnyGlobalPtr : IREE_AnyPtrOf<[IREE_Tensor, IREE_PrimitiveType]>;
 
 class IREE_IndexAttrBase<string descr> :
     TypedAttrBase<
diff --git a/external/iree-dialects/include/iree-dialects/Dialect/IREE/IREEDialect.td b/external/iree-dialects/include/iree-dialects/Dialect/IREE/IREEDialect.td
index d9740ae0f..691359aaf 100644
--- a/external/iree-dialects/include/iree-dialects/Dialect/IREE/IREEDialect.td
+++ b/external/iree-dialects/include/iree-dialects/Dialect/IREE/IREEDialect.td
@@ -95,7 +95,7 @@ def IREE_PtrType : IREE_Type<"Ptr"> {
   let parameters = (ins IREE_PtrTargetTypeParameter:$targetType);
 
   let printer = [{
-    $_printer << "list<" << getTargetType() << ">";
+    $_printer << "ptr<" << getTargetType() << ">";
   }];
 
   let parser = [{
diff --git a/external/iree-dialects/include/iree-dialects/Dialect/IREE/IREEOps.td b/external/iree-dialects/include/iree-dialects/Dialect/IREE/IREEOps.td
index 608353bca..f937ef7d6 100644
--- a/external/iree-dialects/include/iree-dialects/Dialect/IREE/IREEOps.td
+++ b/external/iree-dialects/include/iree-dialects/Dialect/IREE/IREEOps.td
@@ -30,7 +30,7 @@ def IREE_NullOp : IREE_PureOp<"null"> {
 // Casts
 //===----------------------------------------------------------------------===//
 
-def IREE_TensorToBufferView : IREE_PureOp<"cast.tensor_to_buffer_view"> {
+def IREE_TensorToBufferViewOp : IREE_PureOp<"cast.tensor_to_buffer_view"> {
   let summary = "Casts a tensor to a BufferView, capturing dynamic dims";
   let arguments = (ins
     IREE_Tensor:$source,
@@ -44,7 +44,7 @@ def IREE_TensorToBufferView : IREE_PureOp<"cast.tensor_to_buffer_view"> {
   }];
 }
 
-def IREE_BufferViewToTensor : IREE_PureOp<"cast.buffer_view_to_tensor"> {
+def IREE_BufferViewToTensorOp : IREE_PureOp<"cast.buffer_view_to_tensor"> {
   let summary = "Casts a BufferView to a tensor, providing dynamic dims";
   let arguments = (ins
     IREE_BufferViewType:$source,
@@ -62,108 +62,120 @@ def IREE_BufferViewToTensor : IREE_PureOp<"cast.buffer_view_to_tensor"> {
 // Global variables
 //===----------------------------------------------------------------------===//
 
-def IREE_VariableOp : IREE_Op<"variable", [
+def IREE_GlobalOp : IREE_Op<"global", [
     Symbol,
   ]> {
-  let summary = [{stateful variable declaration}];
+  let summary = [{stateful global variable declaration}];
   let description = [{
-    Declares a persistent variable that maintains its value.
+    Declares a global variable that maintains its value across invocations.
+    The value is tied to the execution context of the module and different
+    contexts will have different global storage.
   }];
 
   let arguments = (ins
-    StrAttr:$sym_name,
+    OptionalAttr<StrAttr>:$sym_visibility,
+    SymbolNameAttr:$sym_name,
     TypeAttr:$type,
     UnitAttr:$is_mutable,
     OptionalAttr<FlatSymbolRefAttr>:$initializer,
     OptionalAttr<AnyAttr>:$initial_value
   );
 
-  let skipDefaultBuilders = 1;
-  let builders = [
-    OpBuilder<(ins "StringRef":$name, "bool":$isMutable,
-      "FuncOp":$initializer, CArg<"ArrayRef<NamedAttribute>", "{}">:$attrs)>,
-    OpBuilder<(ins "StringRef":$name, "bool":$isMutable, "Type":$type,
-      "Attribute":$initialValue, CArg<"ArrayRef<NamedAttribute>", "{}">:$attrs)>,
-    OpBuilder<(ins "StringRef":$name, "bool":$isMutable, "Type":$type,
-      CArg<"ArrayRef<NamedAttribute>", "{}">:$attrs)>,
-  ];
+  let assemblyFormat = [{
+    custom<SymbolVisibility>($sym_visibility)
+    (`mutable` $is_mutable^)?
+    $sym_name
+    attr-dict
+    (`initializer` `(` $initializer^ `)`):(``)?
+    custom<TypeOrAttr>($type, $initial_value)
+  }];
 }
 
-def IREE_VariableAddressOp : IREE_PureOp<"variable.address"> {
-  let summary = [{returns an address reference to a variable}];
+def IREE_GlobalAddressOp : IREE_PureOp<"global.address"> {
+  let summary = [{returns an address reference to a global}];
   let description = [{
-    Returns the address of a variable as a typed reference. Can be used with the
-    variable load and store indirect ops.
+    Returns the address of a global as a typed reference. Can be used with the
+    global load and store indirect ops.
   }];
 
   let arguments = (ins
-    IREE_VariableRefAttr:$variable
+    IREE_GlobalRefAttr:$global
   );
   let results = (outs
-    IREE_VariablePtr:$result
+    IREE_AnyGlobalPtr:$result
   );
 
-  let assemblyFormat = "$variable attr-dict `:` type($result)";
+  let assemblyFormat = [{
+    $global attr-dict `:` type($result)
+  }];
 }
 
-def IREE_VariableLoadOp : IREE_Op<"variable.load"> {
+def IREE_GlobalLoadOp : IREE_Op<"global.load"> {
   let summary = [{loads a value from a global variable}];
   let description = [{
-    Returns a copy of the variable value.
+    Returns a copy of the global value.
   }];
 
   let arguments = (ins
-    IREE_VariableRefAttr:$variable
+    IREE_GlobalRefAttr:$global
   );
   let results = (outs
     AnyType:$result
   );
 
-  let assemblyFormat = "$variable attr-dict `:` type($result)";
+  let assemblyFormat = [{
+    $global attr-dict `:` type($result)
+  }];
 }
 
-def IREE_VariableLoadIndirectOp : IREE_Op<"variable.load.indirect"> {
+def IREE_GlobalLoadIndirectOp : IREE_Op<"global.load.indirect"> {
   let summary = [{loads a value from a global variable}];
   let description = [{
-    Returns a copy of the variable value.
+    Returns a copy of the global value.
   }];
 
   let arguments = (ins
-    IREE_VariablePtr:$variable
+    IREE_AnyGlobalPtr:$global
   );
   let results = (outs
     AnyType:$result
   );
 
-  let assemblyFormat = "$variable attr-dict `:` type($variable) `->` type($result)";
+  let assemblyFormat = [{
+    $global attr-dict `:` type($global) `->` type($result)
+  }];
 }
 
-def IREE_VariableStoreOp : IREE_Op<"variable.store"> {
+def IREE_GlobalStoreOp : IREE_Op<"global.store"> {
   let summary = [{stores a value into a global variable}];
   let description = [{
-    Stores a copy of the value into a variable.
+    Stores a copy of the value into a global.
   }];
 
   let arguments = (ins
     AnyType:$value,
-    IREE_VariableRefAttr:$variable
+    IREE_GlobalRefAttr:$global
   );
 
-  let assemblyFormat = "$value `,` $variable attr-dict `:` type($value)";
+  let assemblyFormat = [{
+    $value `,` $global attr-dict `:` type($value)
+  }];
 }
 
-def IREE_VariableStoreIndirectOp : IREE_Op<"variable.store.indirect"> {
+def IREE_GlobalStoreIndirectOp : IREE_Op<"global.store.indirect"> {
   let summary = [{stores a value into a global variable}];
   let description = [{
-    Stores a copy of the value into a variable.
+    Stores a copy of the value into a global.
   }];
 
   let arguments = (ins
     AnyType:$value,
-    IREE_VariablePtr:$variable
+    IREE_AnyGlobalPtr:$global
   );
 
-  let assemblyFormat = "$value `,` $variable attr-dict `:` type($value) `->` type($variable)";
+  let assemblyFormat = [{
+    $value `,` $global attr-dict `:` type($value) `->` type($global)
+  }];
 }
 
 //===----------------------------------------------------------------------===//
@@ -472,8 +484,7 @@ def IREE_TensorUpdateOp : IREE_PureOp<"tensor.update", [
     IREE_ShapeDynamicDims:$target_dims,
     Variadic<IREE_Dim>:$start_indices,
     IREE_Tensor:$update,
-    IREE_ShapeDynamicDims:$update_dims,
-    OptionalAttr<IREE_TiedOpStorageAttr>:$tied_operands
+    IREE_ShapeDynamicDims:$update_dims
   );
   let results = (outs
     IREE_Tensor:$result
@@ -482,7 +493,7 @@ def IREE_TensorUpdateOp : IREE_PureOp<"tensor.update", [
   let assemblyFormat = [{
     $update `,` $target `[` $start_indices `]` `:`
     type($update) (`{` $update_dims^ `}`)? `->`
-    `(` type($result) `,` $target_dims `,` $tied_operands `)`
+    type($result) (`{` $target_dims^ `}`)?
     attr-dict-with-keyword
   }];
 
@@ -508,7 +519,7 @@ def IREE_TensorTraceOp : IREE_Op<"tensor.trace", []> {
     Variadic<IREE_Tensor>:$operands
   );
 
-  let assemblyFormat = "attr-dict ($operands^ `:` type($operands))?";
+  let assemblyFormat = "$key attr-dict ($operands^ `:` type($operands))?";
 }
 
 #endif // IREE_LLVM_EXTERNAL_PROJECTS_IREE_DIALECTS_DIALECT_IREE_IREE_OPS_TD
diff --git a/external/iree-dialects/lib/Dialect/IREE/IREEOps.cpp b/external/iree-dialects/lib/Dialect/IREE/IREEOps.cpp
index 2a127515c..a723b58db 100644
--- a/external/iree-dialects/lib/Dialect/IREE/IREEOps.cpp
+++ b/external/iree-dialects/lib/Dialect/IREE/IREEOps.cpp
@@ -15,5 +15,80 @@
 using namespace mlir;
 using namespace mlir::iree;
 
+//===----------------------------------------------------------------------===//
+// custom<SymbolVisibility>($sym_visibility)
+//===----------------------------------------------------------------------===//
+// some.op custom<SymbolVisibility>($sym_visibility) $sym_name
+// ->
+// some.op @foo
+// some.op private @foo
+
+static ParseResult parseSymbolVisibility(OpAsmParser &parser,
+                                         StringAttr &symVisibilityAttr) {
+  StringRef symVisibility;
+  parser.parseOptionalKeyword(&symVisibility, {"public", "private", "nested"});
+  if (!symVisibility.empty()) {
+    symVisibilityAttr = parser.getBuilder().getStringAttr(symVisibility);
+  }
+  return success();
+}
+
+static void printSymbolVisibility(OpAsmPrinter &p, Operation *op,
+                                  StringAttr symVisibilityAttr) {
+  if (!symVisibilityAttr) {
+    p << "public";
+  } else {
+    p << symVisibilityAttr.getValue();
+  }
+}
+
+//===----------------------------------------------------------------------===//
+// custom<TypeOrAttr>($type, $attr)
+//===----------------------------------------------------------------------===//
+// some.op custom<TypeOrAttr>($type, $attr)
+// ->
+// some.op : i32
+// some.op = 42 : i32
+// some.op : i32 = 42 : index
+
+static ParseResult parseTypeOrAttr(OpAsmParser &parser, TypeAttr &typeAttr,
+                                   Attribute &attr) {
+  if (succeeded(parser.parseOptionalEqual())) {
+    if (failed(parser.parseAttribute(attr))) {
+      return parser.emitError(parser.getCurrentLocation())
+             << "expected attribute";
+    }
+    typeAttr = TypeAttr::get(attr.getType());
+    return success();
+  }
+
+  Type type;
+  if (failed(parser.parseColonType(type))) {
+    return parser.emitError(parser.getCurrentLocation()) << "expected type";
+  }
+  typeAttr = TypeAttr::get(type);
+
+  if (succeeded(parser.parseOptionalEqual())) {
+    if (failed(parser.parseAttribute(attr))) {
+      return parser.emitError(parser.getCurrentLocation())
+             << "expected attribute";
+    }
+  }
+
+  return success();
+}
+
+static void printTypeOrAttr(OpAsmPrinter &p, Operation *op, TypeAttr type,
+                            Attribute attr) {
+  if (!attr || attr.getType() != type.getValue()) {
+    p << " : ";
+    p.printAttribute(type);
+  }
+  if (attr) {
+    p << " = ";
+    p.printAttribute(attr);
+  }
+}
+
 #define GET_OP_CLASSES
 #include "iree-dialects/Dialect/IREE/IREEOps.cpp.inc"