diff --git a/src/webgpu/listing_meta.json b/src/webgpu/listing_meta.json
index 5e4415b59506..acbdadfb759a 100644
--- a/src/webgpu/listing_meta.json
+++ b/src/webgpu/listing_meta.json
@@ -1965,6 +1965,11 @@
   "webgpu:shader,execution,statement,increment_decrement:vec4_element_decrement:*": { "subcaseMS": 5.300 },
   "webgpu:shader,execution,statement,increment_decrement:vec4_element_increment:*": { "subcaseMS": 6.300 },
   "webgpu:shader,execution,statement,phony:executes:*": { "subcaseMS": 129.949 },
+  "webgpu:shader,execution,statement,swizzle_assignment:swizzle_assignment_chained:*": { "subcaseMS": 0.112 },
+  "webgpu:shader,execution,statement,swizzle_assignment:swizzle_assignment_local_var:*": { "subcaseMS": 286.932 },
+  "webgpu:shader,execution,statement,swizzle_assignment:swizzle_assignment_other_vars:*": { "subcaseMS": 0.140 },
+  "webgpu:shader,execution,statement,swizzle_assignment:swizzle_assignment_pointer:*": { "subcaseMS": 0.109 },
+  "webgpu:shader,execution,statement,swizzle_assignment:swizzle_compound_assignment:*": { "subcaseMS": 0.091 },
   "webgpu:shader,execution,value_init:array,nested:*": { "subcaseMS": 3004.523 },
   "webgpu:shader,execution,value_init:array:*": { "subcaseMS": 3831.989 },
   "webgpu:shader,execution,value_init:mat:*": { "subcaseMS": 703.612 },
@@ -2877,6 +2882,12 @@
   "webgpu:shader,validation,statement,switch:condition_type:*": { "subcaseMS": 5.402 },
   "webgpu:shader,validation,statement,switch:condition_type_match_case_type:*": { "subcaseMS": 3.750 },
   "webgpu:shader,validation,statement,switch:parse:*": { "subcaseMS": 16.068 },
+  "webgpu:shader,validation,statement,swizzle_assignment:invalid_component_mismatch:*": { "subcaseMS": 1.246 },
+  "webgpu:shader,validation,statement,swizzle_assignment:invalid_component_oob:*": { "subcaseMS": 1.297 },
+  "webgpu:shader,validation,statement,swizzle_assignment:invalid_duplicate_components:*": { "subcaseMS": 1.005 },
+  "webgpu:shader,validation,statement,swizzle_assignment:invalid_lhs_not_reference:*": { "subcaseMS": 3.222 },
+  "webgpu:shader,validation,statement,swizzle_assignment:invalid_type_mismatch:*": { "subcaseMS": 1.086 },
+  "webgpu:shader,validation,statement,swizzle_assignment:valid:*": { "subcaseMS": 138.201 },
   "webgpu:shader,validation,statement,while:condition_type:*": { "subcaseMS": 5.328 },
   "webgpu:shader,validation,statement,while:parse:*": { "subcaseMS": 8.641 },
   "webgpu:shader,validation,types,alias:any_type:*": { "subcaseMS": 42.329 },
diff --git a/src/webgpu/shader/execution/statement/swizzle_assignment.spec.ts b/src/webgpu/shader/execution/statement/swizzle_assignment.spec.ts
index fc3145a1de2f..aed28c81cf53 100644
--- a/src/webgpu/shader/execution/statement/swizzle_assignment.spec.ts
+++ b/src/webgpu/shader/execution/statement/swizzle_assignment.spec.ts
@@ -3,6 +3,7 @@ Swizzle assignment execution.
 `;
 
 import { makeTestGroup } from '../../../../common/framework/test_group.js';
+import { keysOf } from '../../../../common/util/data_tables.js';
 import { TypedArrayBufferView } from '../../../../common/util/util.js';
 import { Float16Array } from '../../../../external/petamoriken/float16/float16.js';
 import { AllFeaturesMaxLimitsGPUTest, GPUTest } from '../../../gpu_test.js';
@@ -119,10 +120,10 @@ interface SwizzleAssignmentCase {
   expected: readonly number[];
 }
 
-const kSwizzleAssignmentCases: SwizzleAssignmentCase[] = [
+const kSwizzleAssignmentCases: Record<string, SwizzleAssignmentCase> = {
   // v = vec4u(1, 2, 3, 4)
   // v.w = 5;
-  {
+  vec4u_w_literal: {
     elemType: 'u32',
     vecSize: 4,
     initial: [1, 2, 3, 4],
@@ -132,7 +133,7 @@ const kSwizzleAssignmentCases: SwizzleAssignmentCase[] = [
   },
   // v = vec4u(1, 2, 3, 5)
   // v.xy = vec2u(6, 7);
-  {
+  vec4u_xy_vec2u: {
     elemType: 'u32',
     vecSize: 4,
     initial: [1, 2, 3, 5],
@@ -142,7 +143,7 @@ const kSwizzleAssignmentCases: SwizzleAssignmentCase[] = [
   },
   // v = vec4u(6, 7, 3, 5)
   // v.zx = vec2u(8, 9);
-  {
+  vec4u_zx_vec2u: {
     elemType: 'u32',
     vecSize: 4,
     initial: [6, 7, 3, 5],
@@ -152,7 +153,7 @@ const kSwizzleAssignmentCases: SwizzleAssignmentCase[] = [
   },
   // v = vec4u(1, 1, 1, 1)
   // v.xyzw = vec4u(10, 11, 12, 13);
-  {
+  vec4u_xyzw_vec4u: {
     elemType: 'u32',
     vecSize: 4,
     initial: [1, 1, 1, 1],
@@ -162,7 +163,7 @@ const kSwizzleAssignmentCases: SwizzleAssignmentCase[] = [
   },
   // v = vec4u(10, 11, 12, 13)
   // v.xy = vec2(v.y, v.x);
-  {
+  vec4u_xy_vec2_yx: {
     elemType: 'u32',
     vecSize: 4,
     initial: [10, 11, 12, 13],
@@ -172,7 +173,7 @@ const kSwizzleAssignmentCases: SwizzleAssignmentCase[] = [
   },
   // v = vec3i(-10, -20, -30)
   // v.y = 50;
-  {
+  vec3i_y_literal: {
     elemType: 'i32',
     vecSize: 3,
     initial: [-10, -20, -30],
@@ -182,7 +183,7 @@ const kSwizzleAssignmentCases: SwizzleAssignmentCase[] = [
   },
   // v = vec3i(10, 20, 30)
   // v.zx = vec2i(40, 60);
-  {
+  vec3i_zx_vec2i: {
     elemType: 'i32',
     vecSize: 3,
     initial: [10, 20, 30],
@@ -192,7 +193,7 @@ const kSwizzleAssignmentCases: SwizzleAssignmentCase[] = [
   },
   // v = vec3f(1.0, 2.0, 3.0)
   // v.xy = vec2f(4.0, 5.0);
-  {
+  vec3f_xy_vec2f: {
     elemType: 'f32',
     vecSize: 3,
     initial: [1.0, 2.0, 3.0],
@@ -202,7 +203,7 @@ const kSwizzleAssignmentCases: SwizzleAssignmentCase[] = [
   },
   // v = vec2f(1.0, 2.0)
   // v.xy = v + v;
-  {
+  vec2f_yx_v_plus_v: {
     elemType: 'f32',
     vecSize: 2,
     initial: [1.0, 2.0],
@@ -212,7 +213,7 @@ const kSwizzleAssignmentCases: SwizzleAssignmentCase[] = [
   },
   // v = vec4f(10.0, 20.0, 30.0, 100.0)
   // v.rgb = vec3f(v.r, v.g, v.b) / 10;
-  {
+  vec4f_rgb_vec3f_div_10: {
     elemType: 'f32',
     vecSize: 4,
     initial: [10.0, 20.0, 30.0, 100.0],
@@ -222,7 +223,7 @@ const kSwizzleAssignmentCases: SwizzleAssignmentCase[] = [
   },
   // v = vec2h(1.0, 2.0)
   // v.yx = vec2h(4.0, 5.0);
-  {
+  vec2h_yx_vec2h: {
     elemType: 'f16',
     vecSize: 2,
     initial: [1.0, 2.0],
@@ -232,7 +233,7 @@ const kSwizzleAssignmentCases: SwizzleAssignmentCase[] = [
   },
   // v = vec2<bool>(true, false)
   // v.y = true;
-  {
+  vec2_bool_y_true: {
     elemType: 'bool',
     vecSize: 2,
     initial: [1, 0],
@@ -242,7 +243,7 @@ const kSwizzleAssignmentCases: SwizzleAssignmentCase[] = [
   },
   // v = vec3<bool>(true, true, true)
   // v.xz = vec2<bool>(false, false);
-  {
+  vec3_bool_xz_vec2bool: {
     elemType: 'bool',
     vecSize: 3,
     initial: [1, 1, 1],
@@ -250,13 +251,14 @@ const kSwizzleAssignmentCases: SwizzleAssignmentCase[] = [
     rhs: 'vec2<bool>(false, false)',
     expected: [0, 1, 0],
   },
-];
+};
 
 g.test('swizzle_assignment_local_var')
   .desc('Tests the value of a vector after swizzle assignment on a local function variable.')
-  .params(u => u.combine('case', kSwizzleAssignmentCases))
+  .params(u => u.combine('case', keysOf(kSwizzleAssignmentCases)))
   .fn(t => {
-    const { elemType, vecSize, initial, swizzle, rhs, expected } = t.params.case;
+    const { elemType, vecSize, initial, swizzle, rhs, expected } =
+      kSwizzleAssignmentCases[t.params.case];
     runSwizzleAssignmentTest(t, elemType, vecSize, initial, swizzle, rhs, expected);
   });