Enlarge Spells and the Giant Subtype

[Twidleaf2020]

Hello, all!

I am working on a Dwarven alchemist, and I like the idea of the Enlarge Person formula as a defensive spell against DEX-based enemies. I know that Dwarves get +4 to AC against creatures of the "giant" subtype as well. My question is does the Enlarge Person spell give the subject the "Giant Subtype," or just a larger size?

If it did, that would be pretty sweet, granting the Alchemist an AC bonus as well as debuffing the enemy. Input?

[Snowlilly]

Enlarge Person does not change subtype.

For that matter, even the Giantform spells do not change subtype.

[Imbicatus]

Polymorph effects don't change the subjects creature type or subtype. You still count as your normal type for any racial, class, spell, or other ability.

[Dastis]

Can't use it with the dwarven racial. You can use it with all of the class features that give smaller creatures bonuses over larger creatures