diff --git a/mlir/include/mlir/Dialect/Tosa/IR/TosaComplianceData.h.inc b/mlir/include/mlir/Dialect/Tosa/IR/TosaComplianceData.h.inc
index 294fb9d99fdb6..06e4ee0c4176d 100644
--- a/mlir/include/mlir/Dialect/Tosa/IR/TosaComplianceData.h.inc
+++ b/mlir/include/mlir/Dialect/Tosa/IR/TosaComplianceData.h.inc
@@ -467,6 +467,13 @@ profileComplianceMap = {
 extensionComplianceMap = {
     {"tosa.argmax",
      {{{Extension::int16}, {{{i16T, i32T}, SpecificationVersion::V_1_0}}},
+      {{Extension::int64},
+       {{{i8T, i64T}, SpecificationVersion::V_1_1_DRAFT},
+        {{i16T, i64T}, SpecificationVersion::V_1_1_DRAFT},
+        {{i32T, i64T}, SpecificationVersion::V_1_1_DRAFT},
+        {{i64T, i64T}, SpecificationVersion::V_1_1_DRAFT},
+        {{fp16T, i64T}, SpecificationVersion::V_1_1_DRAFT},
+        {{fp32T, i64T}, SpecificationVersion::V_1_1_DRAFT}}},
       {{Extension::fp8e4m3}, {{{fp8e4m3T, i32T}, SpecificationVersion::V_1_0}}},
       {{Extension::fp8e5m2}, {{{fp8e5m2T, i32T}, SpecificationVersion::V_1_0}}},
       {{Extension::bf16}, {{{bf16T, i32T}, SpecificationVersion::V_1_0}}}}},
@@ -601,30 +608,68 @@ extensionComplianceMap = {
     {"tosa.tanh",
      {{{Extension::bf16}, {{{bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.add",
-     {{{Extension::bf16},
+     {{{Extension::int64},
+       {{{i64T, i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}},
+      {{Extension::bf16},
        {{{bf16T, bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
+    {"tosa.arithmetic_right_shift",
+     {{{Extension::int64},
+       {{{i64T, i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}}}},
+    {"tosa.bitwise_and",
+     {{{Extension::int64},
+       {{{i64T, i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}}}},
+    {"tosa.bitwise_or",
+     {{{Extension::int64},
+       {{{i64T, i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}}}},
+    {"tosa.bitwise_xor",
+     {{{Extension::int64},
+       {{{i64T, i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}}}},
+    {"tosa.intdiv",
+     {{{Extension::int64},
+       {{{i64T, i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}}}},
+    {"tosa.logical_left_shift",
+     {{{Extension::int64},
+       {{{i64T, i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}}}},
+    {"tosa.logical_right_shift",
+     {{{Extension::int64},
+       {{{i64T, i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}}}},
     {"tosa.maximum",
-     {{{Extension::bf16},
+     {{{Extension::int64},
+       {{{i64T, i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}},
+      {{Extension::bf16},
        {{{bf16T, bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.minimum",
-     {{{Extension::bf16},
+     {{{Extension::int64},
+       {{{i64T, i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}},
+      {{Extension::bf16},
        {{{bf16T, bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.mul",
-     {{{Extension::bf16},
+     {{{Extension::int64},
+       {{{i64T, i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}},
+      {{Extension::bf16},
        {{{bf16T, bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.pow",
      {{{Extension::bf16},
        {{{bf16T, bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.sub",
-     {{{Extension::bf16},
+     {{{Extension::int64},
+       {{{i64T, i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}},
+      {{Extension::bf16},
        {{{bf16T, bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.table",
      {{{Extension::int16},
        {{{i16T, i16T, i32T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.abs",
-     {{{Extension::bf16}, {{{bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
+     {{{Extension::int64}, {{{i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}},
+      {{Extension::bf16}, {{{bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
+    {"tosa.bitwise_not",
+     {{{Extension::int64},
+       {{{i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}}}},
     {"tosa.ceil",
      {{{Extension::bf16}, {{{bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
+    {"tosa.clz",
+     {{{Extension::int64},
+       {{{i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}}}},
     {"tosa.cos",
      {{{Extension::bf16}, {{{bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.exp",
@@ -634,7 +679,9 @@ extensionComplianceMap = {
     {"tosa.log",
      {{{Extension::bf16}, {{{bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.negate",
-     {{{Extension::bf16},
+     {{{Extension::int64},
+       {{{i64T, i64T, i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}},
+      {{Extension::bf16},
        {{{bf16T, bf16T, bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.reciprocal",
      {{{Extension::bf16}, {{{bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
@@ -643,65 +690,84 @@ extensionComplianceMap = {
     {"tosa.sin",
      {{{Extension::bf16}, {{{bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.select",
-     {{{Extension::bf16},
+     {{{Extension::int64},
+       {{{i64T, i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}},
+      {{Extension::bf16},
        {{{bf16T, bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.equal",
-     {{{Extension::bf16},
+     {{{Extension::int64},
+       {{{i64T, i64T, boolT}, SpecificationVersion::V_1_1_DRAFT}}},
+      {{Extension::bf16},
        {{{bf16T, bf16T, boolT}, SpecificationVersion::V_1_0}}}}},
     {"tosa.greater",
-     {{{Extension::bf16},
+     {{{Extension::int64},
+       {{{i64T, i64T, boolT}, SpecificationVersion::V_1_1_DRAFT}}},
+      {{Extension::bf16},
        {{{bf16T, bf16T, boolT}, SpecificationVersion::V_1_0}}}}},
     {"tosa.greater_equal",
-     {{{Extension::bf16},
+     {{{Extension::int64},
+       {{{i64T, i64T, boolT}, SpecificationVersion::V_1_1_DRAFT}}},
+      {{Extension::bf16},
        {{{bf16T, bf16T, boolT}, SpecificationVersion::V_1_0}}}}},
     {"tosa.reduce_max",
-     {{{Extension::bf16}, {{{bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
+     {{{Extension::int64}, {{{i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}},
+      {{Extension::bf16}, {{{bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.reduce_min",
-     {{{Extension::bf16}, {{{bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
+     {{{Extension::int64}, {{{i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}},
+      {{Extension::bf16}, {{{bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.reduce_product",
      {{{Extension::bf16}, {{{bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.reduce_sum",
-     {{{Extension::bf16}, {{{bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
+     {{{Extension::int64}, {{{i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}},
+      {{Extension::bf16}, {{{bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.concat",
      {{{Extension::int16}, {{{i16T, i16T}, SpecificationVersion::V_1_0}}},
+      {{Extension::int64}, {{{i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}},
       {{Extension::fp8e4m3},
        {{{fp8e4m3T, fp8e4m3T}, SpecificationVersion::V_1_0}}},
       {{Extension::fp8e5m2},
        {{{fp8e5m2T, fp8e5m2T}, SpecificationVersion::V_1_0}}},
       {{Extension::bf16}, {{{bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.pad",
-     {{{Extension::fp8e4m3},
+     {{{Extension::int64},
+       {{{i64T, i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}},
+      {{Extension::fp8e4m3},
        {{{fp8e4m3T, fp8e4m3T, fp8e4m3T}, SpecificationVersion::V_1_0}}},
       {{Extension::fp8e5m2},
        {{{fp8e5m2T, fp8e5m2T, fp8e5m2T}, SpecificationVersion::V_1_0}}},
       {{Extension::bf16},
        {{{bf16T, bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.reshape",
-     {{{Extension::fp8e4m3},
+     {{{Extension::int64}, {{{i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}},
+      {{Extension::fp8e4m3},
        {{{fp8e4m3T, fp8e4m3T}, SpecificationVersion::V_1_0}}},
       {{Extension::fp8e5m2},
        {{{fp8e5m2T, fp8e5m2T}, SpecificationVersion::V_1_0}}},
       {{Extension::bf16}, {{{bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.reverse",
-     {{{Extension::fp8e4m3},
+     {{{Extension::int64}, {{{i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}},
+      {{Extension::fp8e4m3},
        {{{fp8e4m3T, fp8e4m3T}, SpecificationVersion::V_1_0}}},
       {{Extension::fp8e5m2},
        {{{fp8e5m2T, fp8e5m2T}, SpecificationVersion::V_1_0}}},
       {{Extension::bf16}, {{{bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.slice",
-     {{{Extension::fp8e4m3},
+     {{{Extension::int64}, {{{i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}},
+      {{Extension::fp8e4m3},
        {{{fp8e4m3T, fp8e4m3T}, SpecificationVersion::V_1_0}}},
       {{Extension::fp8e5m2},
        {{{fp8e5m2T, fp8e5m2T}, SpecificationVersion::V_1_0}}},
       {{Extension::bf16}, {{{bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.tile",
-     {{{Extension::fp8e4m3},
+     {{{Extension::int64}, {{{i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}},
+      {{Extension::fp8e4m3},
        {{{fp8e4m3T, fp8e4m3T}, SpecificationVersion::V_1_0}}},
       {{Extension::fp8e5m2},
        {{{fp8e5m2T, fp8e5m2T}, SpecificationVersion::V_1_0}}},
       {{Extension::bf16}, {{{bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.transpose",
-     {{{Extension::fp8e4m3},
+     {{{Extension::int64}, {{{i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}},
+      {{Extension::fp8e4m3},
        {{{fp8e4m3T, fp8e4m3T}, SpecificationVersion::V_1_0}}},
       {{Extension::fp8e5m2},
        {{{fp8e5m2T, fp8e5m2T}, SpecificationVersion::V_1_0}}},
@@ -712,14 +778,48 @@ extensionComplianceMap = {
       {{Extension::fp8e5m2},
        {{{fp8e5m2T, i32T, fp8e5m2T}, SpecificationVersion::V_1_0}}},
       {{Extension::bf16},
-       {{{bf16T, i32T, bf16T}, SpecificationVersion::V_1_0}}}}},
+       {{{bf16T, i32T, bf16T}, SpecificationVersion::V_1_0}}},
+      {{Extension::int64},
+       {{{i8T, i64T, i8T}, SpecificationVersion::V_1_1_DRAFT},
+        {{i16T, i64T, i16T}, SpecificationVersion::V_1_1_DRAFT},
+        {{i32T, i64T, i32T}, SpecificationVersion::V_1_1_DRAFT},
+        {{i64T, i64T, i64T}, SpecificationVersion::V_1_1_DRAFT},
+        {{fp16T, i64T, fp16T}, SpecificationVersion::V_1_1_DRAFT},
+        {{fp32T, i64T, fp32T}, SpecificationVersion::V_1_1_DRAFT}}},
+      {{Extension::fp8e4m3, Extension::int64},
+       {{{fp8e4m3T, i64T, fp8e4m3T}, SpecificationVersion::V_1_1_DRAFT}},
+       allOf},
+      {{Extension::fp8e5m2, Extension::int64},
+       {{{fp8e5m2T, i64T, fp8e5m2T}, SpecificationVersion::V_1_1_DRAFT}},
+       allOf},
+      {{Extension::bf16, Extension::int64},
+       {{{bf16T, i64T, bf16T}, SpecificationVersion::V_1_1_DRAFT}},
+       allOf}}},
     {"tosa.scatter",
      {{{Extension::fp8e4m3},
        {{{fp8e4m3T, i32T, fp8e4m3T, fp8e4m3T}, SpecificationVersion::V_1_0}}},
       {{Extension::fp8e5m2},
        {{{fp8e5m2T, i32T, fp8e5m2T, fp8e5m2T}, SpecificationVersion::V_1_0}}},
       {{Extension::bf16},
-       {{{bf16T, i32T, bf16T, bf16T}, SpecificationVersion::V_1_0}}}}},
+       {{{bf16T, i32T, bf16T, bf16T}, SpecificationVersion::V_1_0}}},
+      {{Extension::int64},
+       {{{i8T, i64T, i8T, i8T}, SpecificationVersion::V_1_1_DRAFT},
+        {{i16T, i64T, i16T, i16T}, SpecificationVersion::V_1_1_DRAFT},
+        {{i32T, i64T, i32T, i32T}, SpecificationVersion::V_1_1_DRAFT},
+        {{i64T, i64T, i64T, i64T}, SpecificationVersion::V_1_1_DRAFT},
+        {{fp16T, i64T, fp16T, fp16T}, SpecificationVersion::V_1_1_DRAFT},
+        {{fp32T, i64T, fp32T, fp32T}, SpecificationVersion::V_1_1_DRAFT}}},
+      {{Extension::fp8e4m3, Extension::int64},
+       {{{fp8e4m3T, i64T, fp8e4m3T, fp8e4m3T},
+         SpecificationVersion::V_1_1_DRAFT}},
+       allOf},
+      {{Extension::fp8e5m2, Extension::int64},
+       {{{fp8e5m2T, i64T, fp8e5m2T, fp8e5m2T},
+         SpecificationVersion::V_1_1_DRAFT}},
+       allOf},
+      {{Extension::bf16, Extension::int64},
+       {{{bf16T, i64T, bf16T, bf16T}, SpecificationVersion::V_1_1_DRAFT}},
+       allOf}}},
     {"tosa.resize",
      {{{Extension::int16},
        {{{i16T, i48T}, SpecificationVersion::V_1_0},
@@ -735,6 +835,9 @@ extensionComplianceMap = {
         {{bf16T, i32T}, SpecificationVersion::V_1_0},
         {{bf16T, fp32T}, SpecificationVersion::V_1_0},
         {{fp32T, bf16T}, SpecificationVersion::V_1_0}}},
+      {{Extension::int64},
+       {{{i32T, i64T}, SpecificationVersion::V_1_1_DRAFT},
+        {{i64T, i32T}, SpecificationVersion::V_1_1_DRAFT}}},
       {{Extension::bf16, Extension::fp8e4m3},
        {{{bf16T, fp8e4m3T}, SpecificationVersion::V_1_0},
         {{fp8e4m3T, bf16T}, SpecificationVersion::V_1_0}},
@@ -761,12 +864,14 @@ extensionComplianceMap = {
     {"tosa.const",
      {{{Extension::int4}, {{{i4T}, SpecificationVersion::V_1_0}}},
       {{Extension::int16}, {{{i48T}, SpecificationVersion::V_1_0}}},
+      {{Extension::int64}, {{{i64T}, SpecificationVersion::V_1_1_DRAFT}}},
       {{Extension::fp8e4m3}, {{{fp8e4m3T}, SpecificationVersion::V_1_0}}},
       {{Extension::fp8e5m2}, {{{fp8e5m2T}, SpecificationVersion::V_1_0}}},
       {{Extension::bf16}, {{{bf16T}, SpecificationVersion::V_1_0}}}}},
     {"tosa.identity",
      {{{Extension::int4}, {{{i4T, i4T}, SpecificationVersion::V_1_0}}},
       {{Extension::int16}, {{{i48T, i48T}, SpecificationVersion::V_1_0}}},
+      {{Extension::int64}, {{{i64T, i64T}, SpecificationVersion::V_1_1_DRAFT}}},
       {{Extension::fp8e4m3},
        {{{fp8e4m3T, fp8e4m3T}, SpecificationVersion::V_1_0}}},
       {{Extension::fp8e5m2},
diff --git a/mlir/include/mlir/Dialect/Tosa/IR/TosaOpBase.td b/mlir/include/mlir/Dialect/Tosa/IR/TosaOpBase.td
index 48e0073c76ab6..5b595dd8eb32a 100644
--- a/mlir/include/mlir/Dialect/Tosa/IR/TosaOpBase.td
+++ b/mlir/include/mlir/Dialect/Tosa/IR/TosaOpBase.td
@@ -228,6 +228,7 @@ class Tosa_I32EnumAttr<string name, string description, string mnemonic,
 // FP  : Floating-Point Inference. Primarily FP16 and FP32 operations.
 //
 // Extension:
+// INT64        : 64-bit integer operations.
 // INT16        : 16-bit integer operations.
 // INT4         : 4-bit integer weights.
 // BF16         : BFloat16 operations.
@@ -271,21 +272,24 @@ def Tosa_EXT_DOUBLEROUND  : I32EnumAttrCase<"doubleround", 9>;
 def Tosa_EXT_INEXACTROUND : I32EnumAttrCase<"inexactround", 10>;
 def Tosa_EXT_DYNAMIC      : I32EnumAttrCase<"dynamic", 11>;
 def Tosa_EXT_MXFP         : I32EnumAttrCase<"mxfp", 12>;
+def Tosa_EXT_INT64        : I32EnumAttrCase<"int64", 13>;
+
 
 def Tosa_ExtensionAttr
     : Tosa_I32EnumAttr<"Extension", "supported TOSA extensions", "ext", [
       Tosa_EXT_NONE, Tosa_EXT_INT16, Tosa_EXT_INT4, Tosa_EXT_BF16,
       Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_FFT, Tosa_EXT_VARIABLE,
       Tosa_EXT_CONTROLFLOW, Tosa_EXT_DOUBLEROUND, Tosa_EXT_INEXACTROUND,
-      Tosa_EXT_DYNAMIC, Tosa_EXT_MXFP
+      Tosa_EXT_DYNAMIC, Tosa_EXT_MXFP, Tosa_EXT_INT64
     ]> {
   let extraClassDeclaration = [{
-    static llvm::SmallVector<Extension, 11> getAllValues() {
+    static llvm::SmallVector<Extension, 13> getAllValues() {
       return {
         Extension::int16, Extension::int4, Extension::bf16,
         Extension::fp8e4m3, Extension::fp8e5m2, Extension::fft,
         Extension::variable, Extension::controlflow, Extension::doubleround,
-        Extension::inexactround, Extension::dynamic, Extension::mxfp
+        Extension::inexactround, Extension::dynamic, Extension::mxfp,
+        Extension::int64
       };
     }
   }];
diff --git a/mlir/include/mlir/Dialect/Tosa/IR/TosaOps.td b/mlir/include/mlir/Dialect/Tosa/IR/TosaOps.td
index 6f07247b478c8..ddd8cba5f9dd5 100644
--- a/mlir/include/mlir/Dialect/Tosa/IR/TosaOps.td
+++ b/mlir/include/mlir/Dialect/Tosa/IR/TosaOps.td
@@ -52,7 +52,7 @@ def Tosa_ArgMaxOp : Tosa_InferShapedTypeOp<"argmax"> {
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_INT16, Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_INT16, Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let hasFolder = 1;
@@ -681,7 +681,7 @@ def Tosa_AddOp : Tosa_ElementwiseOp<"add", [
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let hasFolder = 1;
@@ -714,7 +714,7 @@ def Tosa_ArithmeticRightShiftOp : Tosa_ElementwiseOp<"arithmetic_right_shift",
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT]>,
-    Extension<[]>,
+    Extension<[Tosa_EXT_INT64]>,
   ];
 
   let assemblyFormat = "operands attr-dict `:` functional-type(operands, results)";
@@ -744,7 +744,7 @@ def Tosa_BitwiseAndOp : Tosa_ElementwiseOp<"bitwise_and", [
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT]>,
-    Extension<[]>,
+    Extension<[Tosa_EXT_INT64]>,
   ];
 
   let assemblyFormat = "operands attr-dict `:` functional-type(operands, results)";
@@ -774,7 +774,7 @@ def Tosa_BitwiseOrOp : Tosa_ElementwiseOp<"bitwise_or", [
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT]>,
-    Extension<[]>,
+    Extension<[Tosa_EXT_INT64]>,
   ];
 
   let assemblyFormat = "operands attr-dict `:` functional-type(operands, results)";
@@ -804,7 +804,7 @@ def Tosa_BitwiseXorOp : Tosa_ElementwiseOp<"bitwise_xor", [
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT]>,
-    Extension<[]>,
+    Extension<[Tosa_EXT_INT64]>,
   ];
 
   let assemblyFormat = "operands attr-dict `:` functional-type(operands, results)";
@@ -835,7 +835,7 @@ def Tosa_IntDivOp : Tosa_ElementwiseOp<"intdiv", [SameOperandsAndResultElementTy
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[]>,
+    Extension<[Tosa_EXT_INT64]>,
   ];
 
   let hasFolder = 1;
@@ -897,7 +897,7 @@ def Tosa_LogicalLeftShiftOp : Tosa_ElementwiseOp<"logical_left_shift",
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[]>,
+    Extension<[Tosa_EXT_INT64]>,
   ];
 
   let assemblyFormat = "operands attr-dict `:` functional-type(operands, results)";
@@ -927,7 +927,7 @@ def Tosa_LogicalRightShiftOp : Tosa_ElementwiseOp<"logical_right_shift",
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[]>,
+    Extension<[Tosa_EXT_INT64]>,
   ];
 
   let assemblyFormat = "operands attr-dict `:` functional-type(operands, results)";
@@ -1018,7 +1018,7 @@ def Tosa_MaximumOp : Tosa_ElementwiseOp<"maximum", [
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
   let hasCustomAssemblyFormat = 1;
 }
@@ -1048,7 +1048,7 @@ def Tosa_MinimumOp : Tosa_ElementwiseOp<"minimum", [
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let hasCustomAssemblyFormat = 1;
@@ -1082,7 +1082,7 @@ def Tosa_MulOp : Tosa_Op<"mul", [
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let hasFolder = 1;
@@ -1143,7 +1143,7 @@ def Tosa_SubOp : Tosa_ElementwiseOp<"sub", [SameOperandsAndResultElementType]> {
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let hasFolder = 1;
@@ -1228,7 +1228,7 @@ def Tosa_AbsOp : Tosa_ElementwiseUnaryOp<"abs"> {
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let hasFolder = 1;
@@ -1256,7 +1256,7 @@ def Tosa_BitwiseNotOp : Tosa_ElementwiseUnaryOp<"bitwise_not"> {
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT]>,
-    Extension<[]>,
+    Extension<[Tosa_EXT_INT64]>,
   ];
 
   let assemblyFormat = "operands attr-dict `:` functional-type(operands, results)";
@@ -1308,7 +1308,7 @@ def Tosa_ClzOp : Tosa_ElementwiseUnaryOp<"clz"> {
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT]>,
-    Extension<[]>,
+    Extension<[Tosa_EXT_INT64]>,
   ];
 
   let assemblyFormat = "operands attr-dict `:` functional-type(operands, results)";
@@ -1468,7 +1468,7 @@ def Tosa_NegateOp : Tosa_InferShapedTypeOp<"negate", [
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let builders = [Tosa_NegateOpQuantInfoBuilder];
@@ -1604,7 +1604,7 @@ def Tosa_SelectOp : Tosa_ElementwiseOp<"select"> {
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let hasCanonicalizeMethod = 1;
@@ -1654,7 +1654,7 @@ def Tosa_EqualOp : Tosa_ElementwiseOp<"equal", [
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let extraClassDeclaration = [{
@@ -1689,7 +1689,7 @@ def Tosa_GreaterOp : Tosa_ElementwiseOp<"greater", [SameOperandsElementType]> {
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let hasFolder = 1;
@@ -1719,7 +1719,7 @@ def Tosa_GreaterEqualOp : Tosa_ElementwiseOp<"greater_equal",
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let hasFolder = 1;
@@ -1835,7 +1835,7 @@ def Tosa_ReduceMaxOp : Tosa_InferTensorTypeOp<"reduce_max"> {
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let hasFolder = 1;
@@ -1877,7 +1877,7 @@ def Tosa_ReduceMinOp : Tosa_InferTensorTypeOp<"reduce_min"> {
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let hasFolder = 1;
@@ -1959,7 +1959,7 @@ def Tosa_ReduceSumOp : Tosa_InferTensorTypeOp<"reduce_sum"> {
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let hasFolder = 1;
@@ -2005,7 +2005,7 @@ def Tosa_ConcatOp : Tosa_InferTensorTypeOp<"concat"> {
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16, Tosa_EXT_INT16]>,
+    Extension<[Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16, Tosa_EXT_INT16, Tosa_EXT_INT64]>,
   ];
 
   let hasCanonicalizer = 1;
@@ -2061,7 +2061,7 @@ def Tosa_PadOp : Tosa_InferShapedTypeOp<"pad"> {
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let builders = [Tosa_PadOpQuantInfoBuilder];
@@ -2099,7 +2099,7 @@ def Tosa_ReshapeOp : Tosa_InferTensorTypeOp<"reshape"> {
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let extraClassDeclaration = [{
@@ -2136,7 +2136,7 @@ def Tosa_ReverseOp: Tosa_Op<"reverse", [
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let hasFolder = 1;
@@ -2169,7 +2169,7 @@ def Tosa_SliceOp : Tosa_InferShapedTypeOp<"slice"> {
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let hasCanonicalizer = 1;
@@ -2200,7 +2200,7 @@ def Tosa_TileOp : Tosa_InferShapedTypeOp<"tile"> {
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let extraClassDeclaration = [{
@@ -2239,7 +2239,7 @@ def Tosa_TransposeOp : Tosa_InferShapedTypeOp<"transpose",
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let hasCanonicalizer = 1;
@@ -2278,7 +2278,7 @@ def Tosa_GatherOp : Tosa_InferShapedTypeOp<"gather"> {
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let hasVerifier = 1;
@@ -2316,7 +2316,7 @@ def Tosa_ScatterOp : Tosa_InferShapedTypeOp<"scatter"> {
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let hasVerifier = 1;
@@ -2462,7 +2462,7 @@ def Tosa_CastOp: Tosa_Op<"cast", [Pure, SameOperandsAndResultShape,
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let assemblyFormat = "operands attr-dict `:` functional-type(operands, results)";
@@ -2578,7 +2578,7 @@ def Tosa_ConstOp : Tosa_Op<"const", [ConstantLike, Pure,
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_INT4, Tosa_EXT_INT16, Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_INT4, Tosa_EXT_INT16, Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let hasFolder = 1;
@@ -2606,7 +2606,7 @@ def Tosa_IdentityOp: Tosa_Op<"identity", [Pure,
 
   list<Availability> availability = [
     Profile<[Tosa_PRO_INT, Tosa_PRO_FP]>,
-    Extension<[Tosa_EXT_INT4, Tosa_EXT_INT16, Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16]>,
+    Extension<[Tosa_EXT_INT4, Tosa_EXT_INT16, Tosa_EXT_FP8E4M3, Tosa_EXT_FP8E5M2, Tosa_EXT_BF16, Tosa_EXT_INT64]>,
   ];
 
   let assemblyFormat = "operands attr-dict `:` functional-type(operands, results)";
diff --git a/mlir/include/mlir/Dialect/Tosa/IR/TosaProfileCompliance.h b/mlir/include/mlir/Dialect/Tosa/IR/TosaProfileCompliance.h
index 79df1b888b40e..b76228fac9f33 100644
--- a/mlir/include/mlir/Dialect/Tosa/IR/TosaProfileCompliance.h
+++ b/mlir/include/mlir/Dialect/Tosa/IR/TosaProfileCompliance.h
@@ -152,6 +152,7 @@ class TosaProfileCompliance {
     case Extension::variable:
     case Extension::controlflow:
     case Extension::dynamic:
+    case Extension::int64:
       return {Profile::pro_fp, Profile::pro_int};
     case Extension::none:
       return {};
diff --git a/mlir/lib/Dialect/Tosa/IR/TargetEnv.cpp b/mlir/lib/Dialect/Tosa/IR/TargetEnv.cpp
index 32eb286531d28..eb47e85cf9b0b 100644
--- a/mlir/lib/Dialect/Tosa/IR/TargetEnv.cpp
+++ b/mlir/lib/Dialect/Tosa/IR/TargetEnv.cpp
@@ -42,6 +42,7 @@ TosaSpecificationVersion getMinVersion(const Extension &extension) {
   case Extension::dynamic:
     return TosaSpecificationVersion(1, 0);
   case Extension::mxfp:
+  case Extension::int64:
     return TosaSpecificationVersion(1, 1);
   case Extension::none:
     return TosaSpecificationVersion(0, 0);
diff --git a/mlir/lib/Dialect/Tosa/Transforms/TosaProfileCompliance.cpp b/mlir/lib/Dialect/Tosa/Transforms/TosaProfileCompliance.cpp
index e965ae0cf9888..53afc5d9f01a6 100644
--- a/mlir/lib/Dialect/Tosa/Transforms/TosaProfileCompliance.cpp
+++ b/mlir/lib/Dialect/Tosa/Transforms/TosaProfileCompliance.cpp
@@ -19,6 +19,7 @@ TosaProfileCompliance::TosaProfileCompliance() {
   const TypeInfo i16T = {mlir::IntegerType::getTypeID(), 16};
   const TypeInfo i32T = {mlir::IntegerType::getTypeID(), 32};
   const TypeInfo i48T = {mlir::IntegerType::getTypeID(), 48};
+  const TypeInfo i64T = {mlir::IntegerType::getTypeID(), 64};
   const TypeInfo bf16T = {mlir::BFloat16Type::getTypeID(), 16};
   const TypeInfo fp16T = {mlir::Float16Type::getTypeID(), 16};
   const TypeInfo fp32T = {mlir::Float32Type::getTypeID(), 32};
diff --git a/mlir/lib/Dialect/Tosa/Transforms/TosaValidation.cpp b/mlir/lib/Dialect/Tosa/Transforms/TosaValidation.cpp
index 3f874d94ab9be..cb544adb02d09 100644
--- a/mlir/lib/Dialect/Tosa/Transforms/TosaValidation.cpp
+++ b/mlir/lib/Dialect/Tosa/Transforms/TosaValidation.cpp
@@ -1204,6 +1204,7 @@ bool TosaValidation::isValidElementType(Type type, const bool allowUnsigned) {
       case 16:
       case 32:
       case 48:
+      case 64:
         return true;
       }
     } else if (allowUnsigned && intTy.isUnsigned()) {
diff --git a/mlir/test/Dialect/Tosa/availability.mlir b/mlir/test/Dialect/Tosa/availability.mlir
index 600c4c717922a..58ef0d3e5ae59 100644
--- a/mlir/test/Dialect/Tosa/availability.mlir
+++ b/mlir/test/Dialect/Tosa/availability.mlir
@@ -9,7 +9,7 @@
 // CHECK-LABEL: argmax
 func.func @test_argmax(%arg0: tensor<14x19xf32>) -> tensor<14xi32> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [int16, fp8e4m3, fp8e5m2, bf16] ]
+  // CHECK: extensions: [ [int16, fp8e4m3, fp8e5m2, bf16, int64] ]
   %0 = tosa.argmax %arg0 {axis = 1 : i32} : (tensor<14x19xf32>) -> tensor<14xi32>
   return %0 : tensor<14xi32>
 }
@@ -144,7 +144,7 @@ func.func @test_erf(%arg0: tensor<13x21x3xf32>) -> tensor<13x21x3xf32> {
 // CHECK-LABEL: add
 func.func @test_add(%arg0: tensor<13x21x1xf32>, %arg1: tensor<13x21x3xf32>) -> tensor<13x21x3xf32> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [bf16] ]
+  // CHECK: extensions: [ [bf16, int64] ]
   %0 = tosa.add %arg0, %arg1 : (tensor<13x21x1xf32>, tensor<13x21x3xf32>) -> tensor<13x21x3xf32>
   return %0 : tensor<13x21x3xf32>
 }
@@ -153,7 +153,7 @@ func.func @test_add(%arg0: tensor<13x21x1xf32>, %arg1: tensor<13x21x3xf32>) -> t
 // CHECK-LABEL: arithmetic_right_shift
 func.func @test_arithmetic_right_shift(%arg0: tensor<13x21x1xf32>, %arg1: tensor<13x21x3xf32>) -> tensor<13x21x3xf32> {
   // CHECK: profiles: [ [pro_int] ]
-  // CHECK: extensions: [ ]
+  // CHECK: extensions: [ [int64] ]
   %0 = tosa.arithmetic_right_shift %arg0, %arg1 {round = false} : (tensor<13x21x1xf32>, tensor<13x21x3xf32>) -> tensor<13x21x3xf32>
   return %0 : tensor<13x21x3xf32>
 }
@@ -162,7 +162,7 @@ func.func @test_arithmetic_right_shift(%arg0: tensor<13x21x1xf32>, %arg1: tensor
 // CHECK-LABEL: bitwise_and
 func.func @test_bitwise_and(%arg0: tensor<13x21x3xi32>, %arg1: tensor<13x21x1xi32>) -> tensor<13x21x3xi32> {
   // CHECK: profiles: [ [pro_int] ]
-  // CHECK: extensions: [ ]
+  // CHECK: extensions: [ [int64] ]
   %0 = tosa.bitwise_and %arg0, %arg1 : (tensor<13x21x3xi32>, tensor<13x21x1xi32>) -> tensor<13x21x3xi32>
   return %0 : tensor<13x21x3xi32>
 }
@@ -171,7 +171,7 @@ func.func @test_bitwise_and(%arg0: tensor<13x21x3xi32>, %arg1: tensor<13x21x1xi3
 // CHECK-LABEL: bitwise_or
 func.func @test_bitwise_or(%arg0: tensor<13x21x3xi32>, %arg1: tensor<13x1x3xi32>) -> tensor<13x21x3xi32> {
   // CHECK: profiles: [ [pro_int] ]
-  // CHECK: extensions: [ ]
+  // CHECK: extensions: [ [int64] ]
   %0 = tosa.bitwise_or %arg0, %arg1 : (tensor<13x21x3xi32>, tensor<13x1x3xi32>) -> tensor<13x21x3xi32>
   return %0 : tensor<13x21x3xi32>
 }
@@ -180,7 +180,7 @@ func.func @test_bitwise_or(%arg0: tensor<13x21x3xi32>, %arg1: tensor<13x1x3xi32>
 // CHECK-LABEL: bitwise_xor
 func.func @test_bitwise_xor(%arg0: tensor<13x21x1xi32>, %arg1: tensor<13x21x3xi32>) -> tensor<13x21x3xi32> {
   // CHECK: profiles: [ [pro_int] ]
-  // CHECK: extensions: [ ]
+  // CHECK: extensions: [ [int64] ]
   %0 = tosa.bitwise_xor %arg0, %arg1 : (tensor<13x21x1xi32>, tensor<13x21x3xi32>) -> tensor<13x21x3xi32>
   return %0 : tensor<13x21x3xi32>
 }
@@ -189,7 +189,7 @@ func.func @test_bitwise_xor(%arg0: tensor<13x21x1xi32>, %arg1: tensor<13x21x3xi3
 // CHECK-LABEL: intdiv
 func.func @test_intdiv(%arg0: tensor<13x21x1xi32>, %arg1: tensor<13x21x3xi32>) -> tensor<13x21x3xi32> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ ]
+  // CHECK: extensions: [ [int64] ]
   %0 = tosa.intdiv %arg0, %arg1 : (tensor<13x21x1xi32>, tensor<13x21x3xi32>) -> tensor<13x21x3xi32>
   return %0 : tensor<13x21x3xi32>
 }
@@ -207,7 +207,7 @@ func.func @test_logical_and(%arg0: tensor<13x21x3xi1>, %arg1: tensor<13x21x1xi1>
 // CHECK-LABEL: logical_left_shift
 func.func @test_logical_left_shift(%arg0: tensor<13x21x3xi32>, %arg1: tensor<13x21x1xi32>) -> tensor<13x21x3xi32> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ ]
+  // CHECK: extensions: [ [int64] ]
   %0 = tosa.logical_left_shift %arg0, %arg1 : (tensor<13x21x3xi32>, tensor<13x21x1xi32>) -> tensor<13x21x3xi32>
   return %0 : tensor<13x21x3xi32>
 }
@@ -216,7 +216,7 @@ func.func @test_logical_left_shift(%arg0: tensor<13x21x3xi32>, %arg1: tensor<13x
 // CHECK-LABEL: logical_right_shift
 func.func @test_logical_right_shift(%arg0: tensor<13x21x3xi32>, %arg1: tensor<13x21x1xi32>) -> tensor<13x21x3xi32> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ ]
+  // CHECK: extensions: [ [int64] ]
   %0 = tosa.logical_right_shift %arg0, %arg1 : (tensor<13x21x3xi32>, tensor<13x21x1xi32>) -> tensor<13x21x3xi32>
   return %0 : tensor<13x21x3xi32>
 }
@@ -243,7 +243,7 @@ func.func @test_logical_xor(%arg0: tensor<13x1x3xi1>, %arg1: tensor<13x21x3xi1>)
 // CHECK-LABEL: maximum
 func.func @test_max(%arg0: tensor<13x21x3xf32>, %arg1: tensor<13x21x1xf32>) -> tensor<13x21x3xf32> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [bf16] ]
+  // CHECK: extensions: [ [bf16, int64] ]
   %0 = tosa.maximum %arg0, %arg1 : (tensor<13x21x3xf32>, tensor<13x21x1xf32>) -> tensor<13x21x3xf32>
   return %0 : tensor<13x21x3xf32>
 }
@@ -252,7 +252,7 @@ func.func @test_max(%arg0: tensor<13x21x3xf32>, %arg1: tensor<13x21x1xf32>) -> t
 // CHECK-LABEL: minimum
 func.func @test_min(%arg0: tensor<13x21x3xf32>, %arg1: tensor<1x21x3xf32>) -> tensor<13x21x3xf32> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [bf16] ]
+  // CHECK: extensions: [ [bf16, int64] ]
   %0 = tosa.minimum %arg0, %arg1 : (tensor<13x21x3xf32>, tensor<1x21x3xf32>) -> tensor<13x21x3xf32>
   return %0 : tensor<13x21x3xf32>
 }
@@ -262,7 +262,7 @@ func.func @test_min(%arg0: tensor<13x21x3xf32>, %arg1: tensor<1x21x3xf32>) -> te
 func.func @test_mul(%arg0: tensor<13x21x3xf32>, %arg1: tensor<13x1x3xf32>) -> tensor<13x21x3xf32> {
   %shift = "tosa.const"() <{values = dense<0> : tensor<1xi8>}> : () -> tensor<1xi8>
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [bf16] ]
+  // CHECK: extensions: [ [bf16, int64] ]
   %0 = tosa.mul %arg0, %arg1, %shift : (tensor<13x21x3xf32>, tensor<13x1x3xf32>, tensor<1xi8>) -> tensor<13x21x3xf32>
   return %0 : tensor<13x21x3xf32>
 }
@@ -280,7 +280,7 @@ func.func @test_pow(%arg0: tensor<13x21x3xf32>, %arg1: tensor<13x21x1xf32>) -> t
 // CHECK-LABEL: sub
 func.func @test_sub(%arg0: tensor<1x21x3xf32>, %arg1: tensor<13x21x3xf32>) -> tensor<13x21x3xf32> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [bf16] ]
+  // CHECK: extensions: [ [bf16, int64] ]
   %0 = tosa.sub %arg0, %arg1 : (tensor<1x21x3xf32>, tensor<13x21x3xf32>) -> tensor<13x21x3xf32>
   return %0 : tensor<13x21x3xf32>
 }
@@ -298,7 +298,7 @@ func.func @test_table(%arg0: tensor<64xi32>, %arg1: tensor<513x!quant.uniform<i1
 // CHECK-LABEL: abs
 func.func @test_abs(%arg0: tensor<13x21x3xf32>) -> tensor<13x21x3xf32> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [bf16] ]
+  // CHECK: extensions: [ [bf16, int64] ]
   %0 = tosa.abs %arg0 : (tensor<13x21x3xf32>) -> tensor<13x21x3xf32>
   return %0 : tensor<13x21x3xf32>
 }
@@ -307,7 +307,7 @@ func.func @test_abs(%arg0: tensor<13x21x3xf32>) -> tensor<13x21x3xf32> {
 // CHECK-LABEL: bitwise_not
 func.func @test_bitwise_not(%arg0: tensor<13x21x1xi32>) -> tensor<13x21x1xi32> {
   // CHECK: profiles: [ [pro_int] ]
-  // CHECK: extensions: [ ]
+  // CHECK: extensions: [ [int64] ]
   %0 = tosa.bitwise_not %arg0 : (tensor<13x21x1xi32>) -> tensor<13x21x1xi32>
   return %0 : tensor<13x21x1xi32>
 }
@@ -325,7 +325,7 @@ func.func @test_ceil(%arg0: tensor<13x21x3xf32>) -> tensor<13x21x3xf32> {
 // CHECK-LABEL: clz
 func.func @test_clz(%arg0: tensor<13x21x3xi32>) -> tensor<13x21x3xi32> {
   // CHECK: profiles: [ [pro_int] ]
-  // CHECK: extensions: [ ]
+  // CHECK: extensions: [ [int64] ]
   %0 = tosa.clz %arg0 : (tensor<13x21x3xi32>) -> tensor<13x21x3xi32>
   return %0 : tensor<13x21x3xi32>
 }
@@ -379,7 +379,7 @@ func.func @test_logical_not(%arg0: tensor<1x21x3xi1>) -> tensor<1x21x3xi1> {
 // CHECK-LABEL: negate
 func.func @test_negate(%arg0: tensor<13x21x3xf32>) -> tensor<13x21x3xf32> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [bf16] ]
+  // CHECK: extensions: [ [bf16, int64] ]
   %input_zp = "tosa.const"() <{values = dense<0.0> : tensor<1xf32>}> : () -> tensor<1xf32>
   %output_zp = "tosa.const"() <{values = dense<0.0> : tensor<1xf32>}> : () -> tensor<1xf32>
   %0 = tosa.negate %arg0, %input_zp, %output_zp : (tensor<13x21x3xf32>, tensor<1xf32>, tensor<1xf32>) -> tensor<13x21x3xf32>
@@ -417,7 +417,7 @@ func.func @test_sin(%arg0: tensor<13x21x3xf32>) -> tensor<13x21x3xf32> {
 // CHECK-LABEL: select
 func.func @test_select(%arg0: tensor<1x1x1xi1>, %arg1: tensor<13x21x3xf32>, %arg2: tensor<13x21x3xf32>) -> tensor<13x21x3xf32> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [bf16] ]
+  // CHECK: extensions: [ [bf16, int64] ]
   %0 = tosa.select %arg0, %arg1, %arg2 : (tensor<1x1x1xi1>, tensor<13x21x3xf32>, tensor<13x21x3xf32>) -> tensor<13x21x3xf32>
   return %0 : tensor<13x21x3xf32>
 }
@@ -426,7 +426,7 @@ func.func @test_select(%arg0: tensor<1x1x1xi1>, %arg1: tensor<13x21x3xf32>, %arg
 // CHECK-LABEL: equal
 func.func @test_equal(%arg0: tensor<13x21x3xf32>, %arg1: tensor<13x1x3xf32>) -> tensor<13x21x3xi1> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [bf16] ]
+  // CHECK: extensions: [ [bf16, int64] ]
   %0 = tosa.equal %arg0, %arg1 : (tensor<13x21x3xf32>, tensor<13x1x3xf32>) -> tensor<13x21x3xi1>
   return %0 : tensor<13x21x3xi1>
 }
@@ -435,7 +435,7 @@ func.func @test_equal(%arg0: tensor<13x21x3xf32>, %arg1: tensor<13x1x3xf32>) ->
 // CHECK-LABEL: greater
 func.func @test_greater(%arg0: tensor<13x21x1xf32>, %arg1: tensor<13x21x3xf32>) -> tensor<13x21x3xi1> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [bf16] ]
+  // CHECK: extensions: [ [bf16, int64] ]
   %0 = tosa.greater %arg0, %arg1 : (tensor<13x21x1xf32>, tensor<13x21x3xf32>) -> tensor<13x21x3xi1>
   return %0 : tensor<13x21x3xi1>
 }
@@ -444,7 +444,7 @@ func.func @test_greater(%arg0: tensor<13x21x1xf32>, %arg1: tensor<13x21x3xf32>)
 // CHECK-LABEL: greater_equal
 func.func @test_greater_equal(%arg0: tensor<13x1x3xf32>, %arg1: tensor<13x21x3xf32>) -> tensor<13x21x3xi1> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [bf16] ]
+  // CHECK: extensions: [ [bf16, int64] ]
   %0 = tosa.greater_equal %arg0, %arg1 : (tensor<13x1x3xf32>, tensor<13x21x3xf32>) -> tensor<13x21x3xi1>
   return %0 : tensor<13x21x3xi1>
 }
@@ -471,7 +471,7 @@ func.func @test_reduce_any(%arg0: tensor<13x21x3xi1>) -> tensor<1x21x3xi1> {
 // CHECK-LABEL: reduce_max
 func.func @test_reduce_max(%arg0: tensor<13x21x3xf32>) -> tensor<1x21x3xf32> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [bf16] ]
+  // CHECK: extensions: [ [bf16, int64] ]
   %0 = tosa.reduce_max %arg0 {axis = 0 : i32} : (tensor<13x21x3xf32>) -> tensor<1x21x3xf32>
   return %0 : tensor<1x21x3xf32>
 }
@@ -480,7 +480,7 @@ func.func @test_reduce_max(%arg0: tensor<13x21x3xf32>) -> tensor<1x21x3xf32> {
 // CHECK-LABEL: reduce_min
 func.func @test_reduce_min(%arg0: tensor<13x21x3xf32>) -> tensor<1x21x3xf32> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [bf16] ]
+  // CHECK: extensions: [ [bf16, int64] ]
   %0 = tosa.reduce_min %arg0 {axis = 0 : i32} : (tensor<13x21x3xf32>) -> tensor<1x21x3xf32>
   return %0 : tensor<1x21x3xf32>
 }
@@ -498,7 +498,7 @@ func.func @test_reduce_product(%arg0: tensor<13x21x3xf32>) -> tensor<1x21x3xf32>
 // CHECK-LABEL: reduce_sum
 func.func @test_reduce_sum(%arg0: tensor<13x21x3xf32>) -> tensor<1x21x3xf32> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [bf16] ]
+  // CHECK: extensions: [ [bf16, int64] ]
   %0 = tosa.reduce_sum %arg0 {axis = 0 : i32} : (tensor<13x21x3xf32>) -> tensor<1x21x3xf32>
   return %0 : tensor<1x21x3xf32>
 }
@@ -507,7 +507,7 @@ func.func @test_reduce_sum(%arg0: tensor<13x21x3xf32>) -> tensor<1x21x3xf32> {
 // CHECK-LABEL: concat
 func.func @test_concat(%arg0: tensor<13x21x3xf32>, %arg1: tensor<13x21x3xf32>) -> tensor<26x21x3xf32> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [fp8e4m3, fp8e5m2, bf16, int16] ]
+  // CHECK: extensions: [ [fp8e4m3, fp8e5m2, bf16, int16, int64] ]
   %0 = tosa.concat %arg0, %arg1 {axis = 0 : i32} : (tensor<13x21x3xf32>, tensor<13x21x3xf32>) -> tensor<26x21x3xf32>
   return %0 : tensor<26x21x3xf32>
 }
@@ -518,7 +518,7 @@ func.func @test_pad(%arg0: tensor<13x21x3xf32>) -> tensor<13x21x3xf32> {
   %padding = tosa.const_shape {values = dense<0> : tensor<6xindex>} : () -> !tosa.shape<6>
   %pad_const = "tosa.const"() {values = dense<3.14> : tensor<1xf32>} : () -> tensor<1xf32>
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [fp8e4m3, fp8e5m2, bf16] ]
+  // CHECK: extensions: [ [fp8e4m3, fp8e5m2, bf16, int64] ]
   %0 = tosa.pad %arg0, %padding, %pad_const : (tensor<13x21x3xf32>, !tosa.shape<6>, tensor<1xf32>) -> tensor<13x21x3xf32>
   return %0 : tensor<13x21x3xf32>
 }
@@ -528,7 +528,7 @@ func.func @test_pad(%arg0: tensor<13x21x3xf32>) -> tensor<13x21x3xf32> {
 func.func @test_reshape(%arg0: tensor<13x21x3xf32>) -> tensor<1x819xf32> {
   %1 = tosa.const_shape {values = dense<[1, 819]> : tensor<2xindex>} : () -> !tosa.shape<2>
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [fp8e4m3, fp8e5m2, bf16] ]
+  // CHECK: extensions: [ [fp8e4m3, fp8e5m2, bf16, int64] ]
   %0 = tosa.reshape %arg0, %1 : (tensor<13x21x3xf32>, !tosa.shape<2>) -> tensor<1x819xf32>
   return %0 : tensor<1x819xf32>
 }
@@ -537,7 +537,7 @@ func.func @test_reshape(%arg0: tensor<13x21x3xf32>) -> tensor<1x819xf32> {
 // CHECK-LABEL: reverse
 func.func @test_reverse(%arg0: tensor<13x21x3xf32>) -> tensor<13x21x3xf32> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [fp8e4m3, fp8e5m2, bf16] ]
+  // CHECK: extensions: [ [fp8e4m3, fp8e5m2, bf16, int64] ]
   %0 = tosa.reverse %arg0 {axis = 0 : i32} : (tensor<13x21x3xf32>) -> tensor<13x21x3xf32>
   return %0 : tensor<13x21x3xf32>
 }
@@ -548,7 +548,7 @@ func.func @test_slice(%arg0: tensor<13x21x3xf32>) -> tensor<4x11x1xf32> {
   %0 = tosa.const_shape {values = dense<[4, 11, 1]> : tensor<3xindex>} : () -> !tosa.shape<3>
   %1 = tosa.const_shape {values = dense<[6, 8, 0]> : tensor<3xindex>} : () -> !tosa.shape<3>
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [fp8e4m3, fp8e5m2, bf16] ]
+  // CHECK: extensions: [ [fp8e4m3, fp8e5m2, bf16, int64] ]
   %2 = tosa.slice %arg0, %0, %1 : (tensor<13x21x3xf32>, !tosa.shape<3>, !tosa.shape<3>) -> tensor<4x11x1xf32>
   return %2 : tensor<4x11x1xf32>
 }
@@ -558,7 +558,7 @@ func.func @test_slice(%arg0: tensor<13x21x3xf32>) -> tensor<4x11x1xf32> {
 func.func @test_tile(%arg0: tensor<13x21x3xf32>) -> tensor<39x21x6xf32> {
   %cst = tosa.const_shape { values = dense<[3, 1, 2]> : tensor<3xindex> } : () -> !tosa.shape<3>
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [fp8e4m3, fp8e5m2, bf16] ]
+  // CHECK: extensions: [ [fp8e4m3, fp8e5m2, bf16, int64] ]
   %0 = tosa.tile %arg0, %cst: (tensor<13x21x3xf32>, !tosa.shape<3>) -> tensor<39x21x6xf32>
   return %0 : tensor<39x21x6xf32>
 }
@@ -567,7 +567,7 @@ func.func @test_tile(%arg0: tensor<13x21x3xf32>) -> tensor<39x21x6xf32> {
 // CHECK-LABEL: transpose
 func.func @test_transpose(%arg0: tensor<13x21x3xf32>) -> tensor<3x13x21xf32> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [fp8e4m3, fp8e5m2, bf16] ]
+  // CHECK: extensions: [ [fp8e4m3, fp8e5m2, bf16, int64] ]
   %1 = tosa.transpose %arg0 {perms = array<i32: 2, 0, 1>}: (tensor<13x21x3xf32>) -> tensor<3x13x21xf32>
   return %1 : tensor<3x13x21xf32>
 }
@@ -576,7 +576,7 @@ func.func @test_transpose(%arg0: tensor<13x21x3xf32>) -> tensor<3x13x21xf32> {
 // CHECK-LABEL: gather
 func.func @test_gather(%arg0: tensor<13x21x3xf32>, %arg1: tensor<13x26xi32>) -> tensor<13x26x3xf32> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [fp8e4m3, fp8e5m2, bf16] ]
+  // CHECK: extensions: [ [fp8e4m3, fp8e5m2, bf16, int64] ]
   %0 = tosa.gather %arg0, %arg1 : (tensor<13x21x3xf32>, tensor<13x26xi32>) -> tensor<13x26x3xf32>
   return %0 : tensor<13x26x3xf32>
 }
@@ -585,7 +585,7 @@ func.func @test_gather(%arg0: tensor<13x21x3xf32>, %arg1: tensor<13x26xi32>) ->
 // CHECK-LABEL: scatter
 func.func @test_scatter(%arg0: tensor<13x28x3xf32>, %arg1: tensor<13x26xi32>, %arg2: tensor<13x26x3xf32>) -> tensor<13x28x3xf32> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [fp8e4m3, fp8e5m2, bf16] ]
+  // CHECK: extensions: [ [fp8e4m3, fp8e5m2, bf16, int64] ]
   %0 = tosa.scatter %arg0, %arg1, %arg2 : (tensor<13x28x3xf32>, tensor<13x26xi32>, tensor<13x26x3xf32>) -> tensor<13x28x3xf32>
   return %0 : tensor<13x28x3xf32>
 }
@@ -606,7 +606,7 @@ func.func @test_resize(%arg0: tensor<1x32x32x8xf32>) -> tensor<1x64x64x8xf32> {
 // CHECK-LABEL: cast
 func.func @test_cast1(%arg0: tensor<13x21x3xi32>) -> tensor<13x21x3xf32> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [fp8e4m3, fp8e5m2, bf16] ]
+  // CHECK: extensions: [ [fp8e4m3, fp8e5m2, bf16, int64] ]
   %0 = tosa.cast %arg0 : (tensor<13x21x3xi32>) -> tensor<13x21x3xf32>
   return %0 : tensor<13x21x3xf32>
 }
@@ -626,7 +626,7 @@ func.func @test_rescale(%arg0: tensor<13x21x3x!quant.uniform<u8:f32, 0.015655439
 // CHECK-LABEL: test_const
 func.func @test_const(%arg0 : index) -> tensor<4xi32> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [int4, int16, fp8e4m3, fp8e5m2, bf16] ]
+  // CHECK: extensions: [ [int4, int16, fp8e4m3, fp8e5m2, bf16, int64] ]
     %0 = "tosa.const"() {values = dense<[3, 0, 1, 2]> : tensor<4xi32>} : () -> tensor<4xi32>
     return %0 : tensor<4xi32>
 }
@@ -635,7 +635,7 @@ func.func @test_const(%arg0 : index) -> tensor<4xi32> {
 // CHECK-LABEL: identity
 func.func @test_identity(%arg0: tensor<13x21x3xi32>) -> tensor<13x21x3xi32> {
   // CHECK: profiles: [ [pro_int, pro_fp] ]
-  // CHECK: extensions: [ [int4, int16, fp8e4m3, fp8e5m2, bf16] ]
+  // CHECK: extensions: [ [int4, int16, fp8e4m3, fp8e5m2, bf16, int64] ]
   %0 = tosa.identity %arg0 : (tensor<13x21x3xi32>) -> tensor<13x21x3xi32>
   return %0 : tensor<13x21x3xi32>
 }
diff --git a/mlir/test/Dialect/Tosa/invalid.mlir b/mlir/test/Dialect/Tosa/invalid.mlir
index 2a3985c3d2438..119991ca7b451 100644
--- a/mlir/test/Dialect/Tosa/invalid.mlir
+++ b/mlir/test/Dialect/Tosa/invalid.mlir
@@ -729,15 +729,6 @@ func.func @test_mul_missing_shift(%arg0: tensor<13x21x3xi32>, %arg1: tensor<13x1
 
 // -----
 
-// CHECK-LABEL: test_unsupported_int64_data_type
-func.func @test_unsupported_int64_data_type(%arg0: tensor<1x13x13x5xf32>) -> tensor<1x13x13xi64> {
-  // expected-error@+1 {{'tosa.argmax' op is not profile-aligned: element type 'i64' is not legal}}
-  %0 = tosa.argmax %arg0 {axis = 3 : i32} : (tensor<1x13x13x5xf32>) -> tensor<1x13x13xi64>
-  return %0 : tensor<1x13x13xi64>
-}
-
-// -----
-
 // CHECK-LABEL: test_mismatch_in_out_data_type_clamp
 func.func @test_mismatch_in_out_data_type_clamp(%arg0: tensor<13x21x3xf32>) -> tensor<13x21x3xf16> {
   // expected-error@+1 {{'tosa.clamp' op requires the same element type for all operands and results}}
diff --git a/mlir/test/Dialect/Tosa/invalid_extension.mlir b/mlir/test/Dialect/Tosa/invalid_extension.mlir
index 005601d4017b8..a214183b55876 100644
--- a/mlir/test/Dialect/Tosa/invalid_extension.mlir
+++ b/mlir/test/Dialect/Tosa/invalid_extension.mlir
@@ -546,3 +546,12 @@ func.func @test_matmul_t_block_scaled(%arg0: tensor<4x8x32xf8E4M3FN>, %arg1: ten
   %0 = tosa.matmul_t_block_scaled %arg0, %arg1, %arg2, %arg3 {block_size = #tosa.block_size<BLOCK_SIZE_32>} : (tensor<4x8x32xf8E4M3FN>, tensor<4x8x1xf8E8M0FNU>, tensor<4x16x32xf8E4M3FN>, tensor<4x16x1xf8E8M0FNU>) -> tensor<4x8x16xf32>
   return %0 : tensor<4x8x16xf32>
 }
+
+// -----
+
+// CHECK-LABEL: test_argmax_int64
+func.func @test_argmax_int64(%arg0: tensor<1x13x13x5xf32>) -> tensor<1x13x13xi64> {
+  // expected-error@+1 {{'tosa.argmax' op illegal: requires [int64] but not enabled in target}}
+  %0 = tosa.argmax %arg0 {axis = 3 : i32} : (tensor<1x13x13x5xf32>) -> tensor<1x13x13xi64>
+  return %0 : tensor<1x13x13xi64>
+}
diff --git a/mlir/test/Dialect/Tosa/tosa-validation-version-1p1-valid.mlir b/mlir/test/Dialect/Tosa/tosa-validation-version-1p1-valid.mlir
index 2040a4bc7e6af..2301d2febb5c3 100644
--- a/mlir/test/Dialect/Tosa/tosa-validation-version-1p1-valid.mlir
+++ b/mlir/test/Dialect/Tosa/tosa-validation-version-1p1-valid.mlir
@@ -1,4 +1,4 @@
-// RUN: mlir-opt %s -split-input-file -verify-diagnostics -tosa-attach-target="specification_version=1.1.draft profiles=pro_int,pro_fp extensions=int16,int4,bf16,fp8e4m3,fp8e5m2,fft,variable,controlflow,doubleround,inexactround,mxfp" -tosa-validate="strict-op-spec-alignment" | FileCheck %s
+// RUN: mlir-opt %s -split-input-file -verify-diagnostics -tosa-attach-target="specification_version=1.1.draft profiles=pro_int,pro_fp extensions=int16,int4,bf16,fp8e4m3,fp8e5m2,fft,variable,controlflow,doubleround,inexactround,mxfp,int64" -tosa-validate="strict-op-spec-alignment" | FileCheck %s
 
 // -----
 
@@ -26,3 +26,19 @@ func.func @test_matmul_t_block_scaled_fp6e2m3(%arg0: tensor<4x8x32xf6E2M3FN>, %a
   %0 = tosa.matmul_t_block_scaled %arg0, %arg1, %arg2, %arg3 {block_size = BLOCK_SIZE_32} : (tensor<4x8x32xf6E2M3FN>, tensor<4x8x1xf8E8M0FNU>, tensor<4x16x32xf6E2M3FN>, tensor<4x16x1xf8E8M0FNU>) -> tensor<4x8x16xf32>
   return %0 : tensor<4x8x16xf32>
 }
+
+// -----
+
+// CHECK-LABEL: test_argmax_int64
+func.func @test_argmax_int64(%arg0: tensor<1x13x13x5xf32>) -> tensor<1x13x13xi64> {
+  %0 = tosa.argmax %arg0 {axis = 3 : i32} : (tensor<1x13x13x5xf32>) -> tensor<1x13x13xi64>
+  return %0 : tensor<1x13x13xi64>
+}
+
+// -----
+
+// CHECK-LABEL: test_const_i64
+func.func @test_const_i64(%arg0 : index) -> tensor<4xi64> {
+    %0 = "tosa.const"() {values = dense<[3, 0, 1, 2]> : tensor<4xi64>} : () -> tensor<4xi64>
+    return %0 : tensor<4xi64>
+}