There is a lot of customization and eventually code duplication in the frame lowering that handles special SGPR spills like the Frame Pointer. Incorporating any additional register spill currently makes it difficult. This patch introduces a custom spill builder to handle the special SGPR spills exclusively. Various spill methods are special handled using a separate class.

There is a lot of customization and eventually code duplication in the frame lowering that handles special SGPR spills like the one needed for the Frame Pointer. Incorporating any additional SGPR spill currently makes it difficult during PEI. This patch introduces a new spill builder to efficiently handle such spill requirements. Various spill methods are special handled using a separate class.

There is a lot of customization and eventually code duplication in the frame lowering that handles special SGPR spills like the Frame Pointer.one needed for Incorporating any additional register spill currently makes it difficult. This patch introduces a custom spill builder to handle the special SGPRthe Frame Pointer. Incorporating any additional SGPR spill currently spills exclusivelymakes it difficult during PEI. Various spill methods are special handled using aThis patch introduces a new spill builder to efficiently handle such spill requirements. Various spill methods are special handled using a separate class.