is_region_access_contiguous()

bool MayaFlux::Kakshya::is_region_access_contiguous	(	const Region &	region,
		const std::shared_ptr< SignalSourceContainer > &	container
	)

Check if region access will be contiguous in memory.

Parameters

region	Region to check.
container	Container providing layout information.

Returns

True if access is contiguous, false otherwise.

Definition at line 244 of file RegionUtils.cpp.

{
    if (!container) {
        return false;
    }
 
    const auto dimensions = container->get_dimensions();
    const auto memory_layout = container->get_memory_layout();
 
    // For row-major layout, contiguous access means the last dimension spans its full range
    // For column-major layout, contiguous access means the first dimension spans its full range
 
    if (memory_layout == MemoryLayout::ROW_MAJOR) {
        if (!dimensions.empty() && !region.start_coordinates.empty() && !region.end_coordinates.empty()) {
            size_t last_dim = dimensions.size() - 1;
            return (region.start_coordinates[last_dim] == 0 && region.end_coordinates[last_dim] == dimensions[last_dim].size - 1);
        }
    } else if (memory_layout == MemoryLayout::COLUMN_MAJOR) {
        if (!dimensions.empty() && !region.start_coordinates.empty() && !region.end_coordinates.empty()) {
            return (region.start_coordinates[0] == 0 && region.end_coordinates[0] == dimensions[0].size - 1);
        }
    }
 
    return false;
}

References COLUMN_MAJOR, MayaFlux::Kakshya::Region::end_coordinates, ROW_MAJOR, and MayaFlux::Kakshya::Region::start_coordinates.

Referenced by analyze_access_pattern().

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