Resource allocation annotations

These annotations are used to interact with the register allocator. More...

Macros
#define	__aie_access_always
	Type qualifier to protect the access to a variable (similar to volatile).
#define	__aie_dm_resource_a
	Alias for __aie_register(DM_bankA).
#define	__aie_dm_resource_ab
	Alias for __aie_register(DM_bankAB).
#define	__aie_dm_resource_ac
	Alias for __aie_register(DM_bankAC).
#define	__aie_dm_resource_ad
	Alias for __aie_register(DM_bankAD).
#define	__aie_dm_resource_b
	Alias for __aie_register(DM_bankB).
#define	__aie_dm_resource_bc
	Alias for __aie_register(DM_bankBC).
#define	__aie_dm_resource_bd
	Alias for __aie_register(DM_bankBD).
#define	__aie_dm_resource_c
	Alias for __aie_register(DM_bankC).
#define	__aie_dm_resource_cd
	Alias for __aie_register(DM_bankCD).
#define	__aie_dm_resource_d
	Alias for __aie_register(DM_bankD).
#define	__aie_dm_resource_stack
	Alias for __aie_register(DM_stack).
#define	__aie_register(x)
	Keep the variable in the specified resource.
#define	__aie_register_keep()
	Keep the variable in a register.
#define	__aie_separator()
	Inserts a sequence point inside a basic block.
#define	__aie_stream_resource_in_a
#define	__aie_stream_resource_in_b
#define	__aie_stream_resource_out_a
#define	__aie_stream_resource_out_b

Detailed Description

These annotations are used to interact with the register allocator.

Macro Definition Documentation

__aie_access_always

#define __aie_access_always

Type qualifier to protect the access to a variable (similar to volatile).

Main difference with volatile is that the compiler will not interfere in the scheduling of __aie_access_always variables. On the other hand, compiler maintains the order of any volatile access in the C source code.

__aie_dm_resource_a

#define __aie_dm_resource_a

Alias for __aie_register(DM_bankA).

__aie_dm_resource_ab

#define __aie_dm_resource_ab

Alias for __aie_register(DM_bankAB).

__aie_dm_resource_ac

#define __aie_dm_resource_ac

Alias for __aie_register(DM_bankAC).

__aie_dm_resource_ad

#define __aie_dm_resource_ad

Alias for __aie_register(DM_bankAD).

__aie_dm_resource_b

#define __aie_dm_resource_b

Alias for __aie_register(DM_bankB).

__aie_dm_resource_bc

#define __aie_dm_resource_bc

Alias for __aie_register(DM_bankBC).

__aie_dm_resource_bd

#define __aie_dm_resource_bd

Alias for __aie_register(DM_bankBD).

__aie_dm_resource_c

#define __aie_dm_resource_c

Alias for __aie_register(DM_bankC).

__aie_dm_resource_cd

#define __aie_dm_resource_cd

Alias for __aie_register(DM_bankCD).

__aie_dm_resource_d

#define __aie_dm_resource_d

Alias for __aie_register(DM_bankD).

__aie_dm_resource_stack

#define __aie_dm_resource_stack

Alias for __aie_register(DM_stack).

__aie_register

#define __aie_register

(

x

)

Keep the variable in the specified resource.

It can be a specific register or a specific memory.

__aie_register_keep

#define __aie_register_keep

(

)

Keep the variable in a register.

The compiler has the freedom to store the variable in any register. This directive imposes that the variable in a instruction is used as a register operand. Even if the variable is constant, this directive will keep it in a register.

__aie_separator

#define __aie_separator

(

)

Inserts a sequence point inside a basic block.

This directive limits the freedom to reorder the expressions and statements inside a basic block during the register allocation phase.

A __aie_separator() splits a basic block into two smaller blocks, which are sequentialized separately.

__aie_stream_resource_in_a

#define __aie_stream_resource_in_a

__aie_stream_resource_in_b

#define __aie_stream_resource_in_b

__aie_stream_resource_out_a

#define __aie_stream_resource_out_a

__aie_stream_resource_out_b

#define __aie_stream_resource_out_b