[mlir][vector] Add alignment to vector.scatter

Author: amd-eochoalo

mlir/include/mlir/Dialect/Vector/IR/VectorOps.td

@@ -2146,7 +2146,9 @@ def Vector_ScatterOp :
                Variadic<Index>:$indices,
                VectorOfNonZeroRankOf<[AnyInteger, Index]>:$index_vec,
                VectorOfNonZeroRankOf<[I1]>:$mask,
-               AnyVectorOfNonZeroRank:$valueToStore)> {
+               AnyVectorOfNonZeroRank:$valueToStore,
+               ConfinedAttr<OptionalAttr<I64Attr>,
+                   [AllAttrOf<[IntPositive, IntPowerOf2]>]>:$alignment)> {
 
   let summary = [{
     scatters elements from a vector into memory as defined by an index vector
@@ -2204,6 +2206,19 @@ def Vector_ScatterOp :
       "type($index_vec)  `,` type($mask) `,` type($valueToStore)";
   let hasCanonicalizer = 1;
   let hasVerifier = 1;
+
+  let builders = [
+    OpBuilder<(ins "Value":$base,
+                   "ValueRange":$indices,
+                   "Value":$index_vec,
+                   "Value":$mask,
+                   "Value":$valueToStore,
+                   CArg<"llvm::Align", "llvm::Align()">: $alignment), [{
+      return build($_builder, $_state, base, indices, index_vec, mask, valueToStore,
+                   alignment != llvm::Align() ? $_builder.getI64IntegerAttr(alignment.value()) :
+                                    nullptr);
+    }]>
+  ];
 }
 
 def Vector_ExpandLoadOp :

mlir/test/Dialect/Vector/invalid.mlir

@@ -1549,6 +1549,24 @@ func.func @scatter_dim_mask_mismatch(%base: memref<?xf32>, %indices: vector<16xi
 
 // -----
 
+func.func @scatter_invalid_alignment(%base: memref<?xf32>, %indices: vector<16xi32>,
+                                %mask: vector<16xi1>, %value: vector<16xf32>, %c0: index) {
+  // expected-error@+1 {{'vector.scatter' op attribute 'alignment' failed to satisfy constraint: 64-bit signless integer attribute whose value is positive and whose value is a power of two > 0}}
+  vector.scatter %base[%c0][%indices], %mask, %value { alignment = -1 }
+    : memref<?xf32>, vector<16xi32>, vector<16xi1>, vector<16xf32>
+}
+
+// -----
+
+func.func @scatter_invalid_alignment(%base: memref<?xf32>, %indices: vector<16xi32>,
+                                %mask: vector<16xi1>, %value: vector<16xf32>, %c0: index) {
+  // expected-error@+1 {{'vector.scatter' op attribute 'alignment' failed to satisfy constraint: 64-bit signless integer attribute whose value is positive and whose value is a power of two > 0}}
+  vector.scatter %base[%c0][%indices], %mask, %value { alignment = 3 }
+    : memref<?xf32>, vector<16xi32>, vector<16xi1>, vector<16xf32>
+}
+
+// -----
+
 func.func @expand_base_type_mismatch(%base: memref<?xf64>, %mask: vector<16xi1>, %pass_thru: vector<16xf32>) {
   %c0 = arith.constant 0 : index
   // expected-error@+1 {{'vector.expandload' op base and result element type should match}}