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Acir Opcode count less with additional print statement after unused variable #6432
Labels
bug
Something isn't working
Comments
This is shown by the program fn main(input: str<U>, base64_encoded: str<B>) {
let _encoded: [u8; B] = BASE64_ENCODER.encode(input.as_bytes());
println(_encoded);
} Without the print we get
and with the print we get
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Aim
Measure gates of a lib's use, so need to understand when an unused variable is optimised out of a program (or not) for realistic benchmarks.
Expected Behavior
Adding a
println
after an unused variable should not have less acir opcodes.Bug
Program (with unused variable) has:
"acir_opcodes": 410,
Program where unused variable is followed by printing it:
"acir_opcodes": 334,
To Reproduce
jz/base64_example
cd lib_examples/base64_example
nargo e -p Prover_SHORT.toml base64_example_SHORT
bb gates -b ../target/base64_example.json -w ../target/base64_example_SHORT
, (Note acir_opcodes)_encoded
variable line (here), addprintln(_encoded);
Workaround
None
Workaround Description
No response
Additional Context
Related to noir-lang/noir-examples#28
Project Impact
None
Blocker Context
No response
Nargo Version
noirc version = 0.36.0+801c71880ecf8386a26737a5d8bb5b4cb164b2ab
NoirJS Version
No response
Proving Backend Tooling & Version
Barretenberg - bb CLI - 0.58.0%
Would you like to submit a PR for this Issue?
None
Support Needs
No response
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