ARM Compiler toolchain Using the Linker - ARM Information Center

5.10 Overriding the compression algorithm used by the linker
5.10.1 See also
Using linker optimizations
You can override the compression algorithm used by the linker by either:
• using the --datacompressor off option to turn off compression
• specifying a compression algorithm.
To specify a compression algorithm, use the number of the required compressor on the linker
command line, for example:
armlink --datacompressor 2 ...
Use the command-line option --datacompressor list to get a list of compression algorithms
available in the linker:
armlink --datacompressor list
...
Num Compression algorithm
========================================================
0 Run-length encoding
1 Run-length encoding, with LZ77 on small-repeats
2 Complex LZ77 compression
When choosing a compression algorithm be aware that:
• compressor 0 performs well on data with large areas of zero-bytes but few nonzero bytes
• compressor 1 performs well on data where the nonzero bytes are repeating
• compressor 2 performs well on data that contains repeated values.
The linker prefers compressor 0 or 1 where the data contains mostly zero-bytes (>75%).
Compressor 2 is chosen where the data contains few zero-bytes (