Supported Parallel Combinations - Analog Devices ADSP-BF53x Blackfin Reference

20 ISSUING PARALLEL
INSTRUCTIONS
This chapter discusses the instructions that can be issued in parallel. It
identifies supported combinations for parallel issue, parallel issue syntax,
32-bit ALU/MAC instructions, 16-bit instructions, and examples.
The Blackfin processor is not superscalar; it does not execute multiple
instructions at once. However, it does permit up to three instructions to
be issued in parallel with some limitations. A multi-issue instruction is
64-bits in length and consists of one 32-bit instruction and two 16-bit
instructions. All three instructions execute in the same amount of time as
the slowest of the three.
Sections in this chapter
• "Supported Parallel Combinations" on page 20-1
• "Parallel Issue Syntax" on page 20-2
• "32-Bit ALU/MAC Instructions" on page 20-3
• "16-Bit Instructions" on page 20-6
• "Examples" on page 20-8

Supported Parallel Combinations

The diagram in
that the Blackfin processor supports.
ADSP-BF53x/BF56x Blackfin Processor Programming Reference
Table 20-1 illustrates the combinations for parallel issue
20-1