Cache

Aso

Represents ASO instruction - Used to establish memory consistency between vector loads and vector stores.

Intrinsics Prototype and Arguments

void aso(int switches=0, bool predicate=1, bool polarity=0)

switches

Switches of ASO instructions.

predicate

Predicate value for the instruction.

polarity

True if polarity of the predicate is inverted.

Allowed switches are:

  • SW_INC - Increment the semaphore value once all older writes to memory are observable.

  • SW_DEC - Decrement the semaphore value once all older writes to memory are observable.

  • SW_SPU - Semaphore update is done in SPU stage.

  • SW_VPU - Semaphore update is done in VPU stage.

Cache Flush

Represents CACHE_FLUSH instruction - Flush the Data-cache. This instruction also invalidates the caceh after flush.

Intrinsics Prototype and Arguments

void cache_flush(int switches=0, bool predicate=1, bool polarity=0)

switches

Switches of the instructions.

predicate

Predicate value for the instruction.

polarity

True if polarity of the predicate is inverted.

Cache Invalidate

Represents CACHE_INVALIDATE instruction - Invalidate Data/LUT/SB cache. This instruction does not flush out the data cache.

Intrinsics Prototype and Arguments

void cache_invalidate(int switches=0, bool predicate=1, bool polarity=0)

switches

Switches of the instructions.

predicate

Predicate value for the instruction.

polarity

True if polarity of the predicate is inverted.

Prefetch

Represents PREFETCH instruction. Prefetch data from global memory to scalar cache.

Intrinsics Prototype and Arguments

void prefetch(__global void *a, int switches=0, bool predicate=1, bool polarity=0)

a

Address to prefetch (SRC1).

switches

Switches of the instruction.

predicate

Predicate value for the instruction.

polarity

True if polarity of the predicate is inverted.

Get semaphore value

Return semaphore value.

Intrinsics Prototype and Arguments

int32_t get_semaphore_value()

Semaphore value.

Set semaphore value

Set semaphore value.

Intrinsics Prototype and Arguments

void set_semaphore_value(int32_t val)

val

The new padding value.