Mojo module

intrinsics

Defines intrinsics.

You can import these APIs from the sys package. For example:

from sys import PrefetchLocality

from sys import PrefetchLocality

Aliases

• ​block_dim = _BlockDim():
• ​block_id_in_cluster = _Cluster_BlockIdx():
• ​block_idx = _BlockIdx():
• ​cluster_dim = _ClusterDim():
• ​cluster_idx = _ClusterIdx():
• ​global_idx = _GridIdx():
• ​grid_dim = _GridDim():
• ​thread_idx = _ThreadIdx():

Structs

• ​PrefetchCache: Prefetch cache type.
• ​PrefetchLocality: The prefetch locality.
• ​PrefetchOptions: Collection of configuration parameters for a prefetch intrinsic call.
• ​PrefetchRW: Prefetch read or write.

Functions

• ​assume: Signals to the optimizer that the condition is always true. This allows the optimizer to optimize the code.
• ​ballot: Returns a bitfield(Int32 or Int64) containing the result of its Bool argument in all active lanes, and zero in all inactive lanes. For example, ballot(True) returns EXEC mask.
• ​compressed_store: Compresses the lanes of value, skipping mask lanes, and stores at addr.
• ​expect: Provides information about expected (the most probable) value of val, which can be used by optimizers.
• ​gather: Reads scalar values from a SIMD vector, and gathers them into one vector.
• ​implicitarg_ptr: Get a pointer to AMD's implicit arguments table.
• ​lane_id: Returns the lane ID of the current thread.
• ​likely: Provides information that the most probable value of val is going to be True. This information can be used by optimizers.
• ​llvm_intrinsic: Calls an LLVM intrinsic with the name intrin and return type type.
• ​masked_load: Loads data from memory and return it, replacing masked lanes with values from the passthrough vector.
• ​masked_store: Stores a value at a memory location, skipping masked lanes.
• ​prefetch: Prefetches an instruction or data into cache before it is used.
• ​readfirstlane: Get the value in the lowest active lane of the input operand.
• ​scatter: Takes scalar values from a SIMD vector and scatters them into a vector of pointers.
• ​sendmsg: Send a message to fixed function hardware. Refer to the specific ISA manual for the ops and messages.
• ​strided_load: Loads values from addr according to a specific stride.
• ​strided_store: Loads values from addr according to a specific stride.
• ​unlikely: Provides information that the most probable value of val is going to be False. This information can be used by optimizers.

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