Use memcpy for vector assignment

Whether to enable memcpy optimization

Description

App Configuration Pane: Advanced

Configuration Objects: coder.MexCodeConfig | coder.CodeConfig | coder.EmbeddedCodeConfig

The Use memcpy for vector assignment parameter specifies whether to use the memcpy optimization. To optimize code that copies consecutive array elements, the memcpy optimization replaces the code with a memcpy call. When the number of elements to copy is known at compile time, the code generator uses the Memcpy threshold (bytes) parameter to determine whether to use the optimization. For more information, see memcpy Optimization.

Dependencies

To enable this parameter, select Use memcpy for vector assignment.

Settings

On

Uses the memcpy optimization, if possible. This value is the default value.

Off

Does not use the memcpy optimization.

Programmatic Use

Property: EnableMemcpy

Values: true | false

Default: true

Version History

Introduced in R2011a

R2025a: GPU Coder uses the memcpy optimization by default

By default, the Use memcpy for vector assignment parameter is enabled in the GPU Coder™ app. At the command line, creating a coder.gpuConfig (GPU Coder) configuration object sets EnableMemcpy to true. In previous releases, GPU Coder disabled this parameter, and you could not enable it in the GPU Coder app or the command line.