[TOSA] Don't run validation pass on non TOSA operations

This commit ensures the validation pass is not run on operations
from other dialects. In doing so, operations from other dialects
that, for example, use types not supported by TOSA don't result
in an error.

Change-Id: If1efde2036f2d3e13b8c8588fea6344922453c2b
Signed-off-by: Luke Hutton <luke.hutton@arm.com>

mlir/lib/Dialect/Tosa/Transforms/TosaValidation.cpp

@@ -543,6 +543,10 @@ bool TosaValidation::isValidElementType(Type type) {
 void TosaValidation::runOnOperation() {
   configLevelAndProfile();
   getOperation().walk([&](Operation *op) {
+    if (!op->getDialect() ||
+        op->getDialect()->getNamespace() != TosaDialect::getDialectNamespace())
+      return;
+
     for (Value operand : op->getOperands()) {
       auto elementTy = getElementTypeOrSelf(operand);
       if (!isValidElementType(elementTy)) {

mlir/test/Dialect/Tosa/invalid.mlir

@@ -625,7 +625,6 @@ func.func @test_mul_invalid_shift(%arg0: tensor<13x21x3xf32>, %arg1: tensor<13x1
 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>
-  // expected-error@+1 {{'func.return' op is not profile-aligned: element type 'i64' is not legal}}
   return %0 : tensor<1x13x13xi64>
 }
 
@@ -879,4 +878,13 @@ func.func @test_mismatch_in_out_shape_logical_not(%arg0: tensor<1x21x3xi1>) -> t
   // expected-error@+1 {{'tosa.logical_not' op requires the same shape for all operands and results}}
   %0 = tosa.logical_not %arg0 : (tensor<1x21x3xi1>) -> tensor<13x21x3xi1>
   return %0 : tensor<13x21x3xi1>
-}
+}
+
+// -----
+
+// Check validate pass doesn't run on non TOSA ops
+func.func @test_non_tosa_ops() {
+  %0 = arith.constant 6 : index
+  %2 = tensor.empty(%0) : tensor<?x27xi64>
+  return
+}