[wasm-simd] Implement v128.andnot scalar lowering

Bug: v8:10082
Change-Id: I5ade4269e70e09d0f98b51faf819163e736ae76b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1990507
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65939}

src/compiler/simd-scalar-lowering.cc

@@ -1140,6 +1140,22 @@ void SimdScalarLowering::LowerNode(Node* node) {
       ReplaceNode(node, rep_node, kNumLanes32);
       break;
     }
+    case IrOpcode::kS128AndNot: {
+      DCHECK_EQ(2, node->InputCount());
+      Node** rep_left = GetReplacementsWithType(node->InputAt(0), rep_type);
+      Node** rep_right = GetReplacementsWithType(node->InputAt(1), rep_type);
+      int num_lanes = NumLanes(rep_type);
+      Node** rep_node = zone()->NewArray<Node*>(num_lanes);
+      Node* mask = graph()->NewNode(common()->Int32Constant(0xFFFFFFFF));
+      for (int i = 0; i < num_lanes; ++i) {
+        Node* not_rep_right =
+            graph()->NewNode(machine()->Word32Xor(), rep_right[i], mask);
+        rep_node[i] = graph()->NewNode(machine()->Word32And(), rep_left[i],
+                                       not_rep_right);
+      }
+      ReplaceNode(node, rep_node, num_lanes);
+      break;
+    }
     case IrOpcode::kI32x4SConvertF32x4: {
       LowerConvertFromFloat(node, true);
       break;

test/cctest/wasm/test-run-wasm-simd.cc

@@ -1909,7 +1909,7 @@ WASM_SIMD_TEST(S128Xor) {
 }
 
 // Bitwise operation, doesn't really matter what simd type we test it with.
-WASM_SIMD_TEST_NO_LOWERING(S128AndNot) {
+WASM_SIMD_TEST(S128AndNot) {
   RunI32x4BinOpTest(execution_tier, lower_simd, kExprS128AndNot, AndNot);
 }