Commit Graph

6 Commits

Author SHA1 Message Date
Andrey Tuganov
78cf86150e Add id descriptor feature to SPIR-V
Id descriptors are computed as a recursive hash of all instructions used
to define an id. Descriptors are invarint of actual id values and
the similar code in different files would produce the same descriptors.

Multiple ids can have the same descriptor. For example
%1 = OpConstant %u32 1
%2 = OpConstant %u32 1
would produce two ids with the same descriptor. But
%3 = OpConstant %s32 1
%4 = OpConstant %u32 2
would have descriptors different from %1 and %2.

Descriptors will be used as handles of move-to-front sequences in SPIR-V
compression.
2017-08-10 18:44:52 -04:00
Andrey Tuganov
55b73a0365 Added C++ code generation to spirv-stats
The tool can now generate C++ code returning some of the historgrams and
Huffman codecs generated from those historgrams.
2017-08-01 15:41:42 -04:00
Andrey Tuganov
f5facf842f Stats analyzer aggregates OpConstant usage 2017-05-09 11:50:15 -04:00
Andrey Tuganov
b4cf371936 Stats analyzer uses validator
Stats analyzer calls validator to check the instruction and update
validator state.

Fixed unit tests (validator was failing).
2017-05-09 11:17:23 -04:00
Andrey Tuganov
87a3f651e2 Added Markov chain analysis to stats
Added data structure to SpirvStats which is used to collect statistics
on opcodes following other opcodes.

Added a simple analysis print-out to spirv-stats.
2017-04-26 02:31:13 -04:00
Andrey Tuganov
4f216402ba Added statistical analysis tool (tool/stats)
Currently analyzes percentages of the following:
- version (how many 1.0 or 1.1)
- generator
- extension
- capability
- opcode prevalence
2017-04-10 17:15:04 -04:00