chore(benchmarks): add benchmarks for niop opcode in all operation modes

[rymnc]

This pull request introduces a new benchmarking group for niop operations in the alu.rs file. The changes add comprehensive benchmarks for various operations (ADD, SUB, MUL, EXP, SLL, XNOR) across different operand widths (U8, U16, U32)

Additions to benchmarking:

• A new niop benchmarking group was added to evaluate the performance of narrow integer operations (niop) with different operand widths (U8, U16, U32).
• Introduced the niop_bench macro to simplify the creation of benchmarks for operations like ADD, SUB, MUL, EXP, SLL, and XNOR.
• Benchmarks iterate over generated operand pairs for each width, ensuring a variety of test cases for each operation.

[MitchTurner]

s there somewhere I can read up on what niop is? I've been out of the loop on it.

edit: The description helps haha:

A new niop benchmarking group was added to evaluate the performance of narrow integer operations (niop) with different operand widths (U8, U16, U32).

Still unfamiliar with what it's for, but this helps me approximate :)

[MitchTurner]

nit: I think this would be more readable as niop_benchmark_group. It's confusing passing niop to something named niop_bench

[rymnc]

addressed in ee93d38

[rymnc]

https://docs.fuel.network/docs/specs/fuel-vm/instruction-set/#niop-narrow-integer-operation

[xgreenx]

Hmm, how we convert results of these benchmark into the actual cost? Because we have only one gas cost which we need to fill, but we have 18 benchmarks for it. I see how we can use it in sanity checks, but I don't understand how does it work for the collect binary=D

[rymnc]

Hmm, how we convert results of these benchmark into the actual cost? Because we have only one gas cost which we need to fill, but we have 18 benchmarks for it. I see how we can use it in sanity checks, but I don't understand how does it work for the collect binary=D

checking

[rymnc]

Hmm, how we convert results of these benchmark into the actual cost? Because we have only one gas cost which we need to fill, but we have 18 benchmarks for it. I see how we can use it in sanity checks, but I don't understand how does it work for the collect binary=D

the collect binary groups benchmark groups and takes the average from them i believe.

fuel-core/benches/src/bin/collect.rs

Lines 588 to 605 in ee93d38

	fn into_relative_costs(self, mut costs: Costs) -> Costs {
	let baseline = self.get_baseline();
	let State {
	mut ids, groups, ..
	} = self;
	let relative = groups.into_iter().filter_map(|(name, samples)| {
	let relative = samples
	.into_iter()
	.find(|sample| sample.starts_with(&name) && ids.contains_key(sample))
	.and_then(|sample| ids.remove(&sample))
	.map(|mean| Cost::Relative(map_to_ratio(baseline, mean)))?;
	Some((name, relative))
	});
	costs.0.extend(relative);
	costs
	}