Disable specs for StaticArray#sort_by on broken targets

spec/std/static_array_spec.cr

@@ -263,29 +263,37 @@ describe "StaticArray" do
       end
     end
 
-    describe "{{ sort }}_by" do
-      it "sorts by" do
-        a = StaticArray["foo", "a", "hello"]
-        b = a.{{ sort }}_by(&.size)
-        b.should eq(StaticArray["a", "foo", "hello"])
-        a.should_not eq(b)
-      end
-    end
-
-    describe "{{ sort }}_by!" do
-      it "sorts by!" do
-        a = StaticArray["foo", "a", "hello"]
-        a.{{ sort }}_by!(&.size)
-        a.should eq(StaticArray["a", "foo", "hello"])
+    # StaticArray#sort_by and #sort_by! don't compile on aarch64-darwin and
+    # aarch64-linux-musl due to a codegen error caused by LLVM < 13.0.0.
+    # See https://github.com/crystal-lang/crystal/issues/11358 for details.
+    {% unless compare_versions(Crystal::LLVM_VERSION, "13.0.0") < 0 && flag?(:aarch64) && (flag?(:musl) || flag?(:darwin)) %}
+      describe "{{ sort }}_by" do
+        it "sorts by" do
+          a = StaticArray["foo", "a", "hello"]
+          b = a.{{ sort }}_by(&.size)
+          b.should eq(StaticArray["a", "foo", "hello"])
+          a.should_not eq(b)
+        end
       end
 
-      it "calls given block exactly once for each element" do
-        calls = Hash(String, Int32).new(0)
-        a = StaticArray["foo", "a", "hello"]
-        a.{{ sort }}_by! { |e| calls[e] += 1; e.size }
-        calls.should eq({"foo" => 1, "a" => 1, "hello" => 1})
+      describe "{{ sort }}_by!" do
+        it "sorts by!" do
+          a = StaticArray["foo", "a", "hello"]
+          a.{{ sort }}_by!(&.size)
+          a.should eq(StaticArray["a", "foo", "hello"])
+        end
+
+        it "calls given block exactly once for each element" do
+          calls = Hash(String, Int32).new(0)
+          a = StaticArray["foo", "a", "hello"]
+          a.{{ sort }}_by! { |e| calls[e] += 1; e.size }
+          calls.should eq({"foo" => 1, "a" => 1, "hello" => 1})
+        end
       end
-    end
+    {% else %}
+      pending "{{ sort }}_by"
+      pending "{{ sort }}_by!"
+    {% end %}
   {% end %}
 
   it_iterates "#each", [1, 2, 3], StaticArray[1, 2, 3].each