update_cpu_features: omit matrix spirv feature

lib/std/Target/spirv.zig

@@ -88,7 +88,6 @@ pub const Feature = enum {
     interpolation_function,
     literal_sampler,
     long_vector_ext,
-    matrix,
     mesh_shading_ext,
     min_lod,
     multi_view,
@@ -872,13 +871,6 @@ pub const all_features = blk: {
             .v1_0,
         }),
     };
-    result[@backingInt(Feature.matrix)] = .{
-        .llvm_name = null,
-        .description = "Enable matrix capability",
-        .dependencies = featureSet(&[_]Feature{
-            .v1_0,
-        }),
-    };
     result[@backingInt(Feature.mesh_shading_ext)] = .{
         .llvm_name = null,
         .description = "Enable mesh_shading_ext capability",

tools/update_cpu_features.zig

@@ -64,6 +64,7 @@ const spirv_omitted_capabilities = [_][]const u8{
     "shader", // implied by Vulkan/OpenGL targets
     "kernel", // implied by OpenCL/AMDHSA targets
     "addresses", // implied by OpenCL/AMDHSA targets
+    "matrix", // implied by shader
     "physical_storage_buffer_addresses", // implied by spirv64-vulkan
     "linkage", // automatically emitted when externs need linkage decorations
 };