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/logs | ||
build | ||
dist | ||
target | ||
target* | ||
*/.vscode/* |
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use std::borrow::Cow; | ||
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use itertools::Itertools; | ||
use tracing::{span, Level}; | ||
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use super::{EvalAtRow, InfoEvaluator, PointEvaluator, SimdDomainEvaluator}; | ||
use crate::core::air::accumulation::DomainEvaluationAccumulator; | ||
use crate::core::air::{Component, ComponentProver, ComponentTrace}; | ||
use crate::core::backend::simd::m31::{PackedBaseField, LOG_N_LANES}; | ||
use crate::core::backend::simd::SimdBackend; | ||
use crate::core::constraints::coset_vanishing; | ||
use crate::core::fields::m31::BaseField; | ||
use crate::core::fields::FieldExpOps; | ||
use crate::core::pcs::TreeVec; | ||
use crate::core::poly::circle::{CanonicCoset, CircleEvaluation, PolyOps}; | ||
use crate::core::poly::BitReversedOrder; | ||
use crate::core::prover::LOG_BLOWUP_FACTOR; | ||
use crate::core::{utils, InteractionElements, LookupValues}; | ||
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pub trait FrameworkComponent { | ||
fn log_size(&self) -> u32; | ||
fn max_constraint_log_degree_bound(&self) -> u32; | ||
fn evaluate<E: EvalAtRow>(&self, eval: E) -> E; | ||
} | ||
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impl<C: FrameworkComponent> Component for C { | ||
fn n_constraints(&self) -> usize { | ||
self.evaluate(InfoEvaluator::default()).n_constraints | ||
} | ||
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fn max_constraint_log_degree_bound(&self) -> u32 { | ||
FrameworkComponent::max_constraint_log_degree_bound(self) | ||
} | ||
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fn trace_log_degree_bounds(&self) -> crate::core::pcs::TreeVec<crate::core::ColumnVec<u32>> { | ||
TreeVec::new( | ||
self.evaluate(InfoEvaluator::default()) | ||
.mask_offsets | ||
.iter() | ||
.map(|tree_masks| vec![self.log_size(); tree_masks.len()]) | ||
.collect(), | ||
) | ||
} | ||
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fn mask_points( | ||
&self, | ||
point: crate::core::circle::CirclePoint<crate::core::fields::qm31::SecureField>, | ||
) -> crate::core::pcs::TreeVec< | ||
crate::core::ColumnVec< | ||
Vec<crate::core::circle::CirclePoint<crate::core::fields::qm31::SecureField>>, | ||
>, | ||
> { | ||
let info = self.evaluate(InfoEvaluator::default()); | ||
let trace_step = CanonicCoset::new(self.log_size()).step(); | ||
info.mask_offsets.map(|tree_mask| { | ||
tree_mask | ||
.iter() | ||
.map(|col_mask| { | ||
col_mask | ||
.iter() | ||
.map(|off| point + trace_step.mul_signed(*off).into_ef()) | ||
.collect() | ||
}) | ||
.collect() | ||
}) | ||
} | ||
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fn evaluate_constraint_quotients_at_point( | ||
&self, | ||
point: crate::core::circle::CirclePoint<crate::core::fields::qm31::SecureField>, | ||
mask: &crate::core::pcs::TreeVec< | ||
crate::core::ColumnVec<Vec<crate::core::fields::qm31::SecureField>>, | ||
>, | ||
evaluation_accumulator: &mut crate::core::air::accumulation::PointEvaluationAccumulator, | ||
_interaction_elements: &crate::core::InteractionElements, | ||
_lookup_values: &crate::core::LookupValues, | ||
) { | ||
self.evaluate(PointEvaluator::new( | ||
mask.as_ref(), | ||
evaluation_accumulator, | ||
coset_vanishing(CanonicCoset::new(self.log_size()).coset, point).inverse(), | ||
)); | ||
} | ||
} | ||
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impl<C: FrameworkComponent> ComponentProver<SimdBackend> for C { | ||
fn evaluate_constraint_quotients_on_domain( | ||
&self, | ||
trace: &ComponentTrace<'_, SimdBackend>, | ||
evaluation_accumulator: &mut DomainEvaluationAccumulator<SimdBackend>, | ||
_interaction_elements: &InteractionElements, | ||
_lookup_values: &LookupValues, | ||
) { | ||
let eval_domain = CanonicCoset::new(self.max_constraint_log_degree_bound()).circle_domain(); | ||
let trace_domain = CanonicCoset::new(self.log_size()); | ||
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// Extend trace if necessary. | ||
let trace: TreeVec< | ||
Vec<Cow<'_, CircleEvaluation<SimdBackend, BaseField, BitReversedOrder>>>, | ||
> = if eval_domain.log_size() != self.log_size() + LOG_BLOWUP_FACTOR { | ||
let _span = span!(Level::INFO, "Extension").entered(); | ||
let twiddles = SimdBackend::precompute_twiddles(eval_domain.half_coset); | ||
trace | ||
.polys | ||
.as_cols_ref() | ||
.map_cols(|col| Cow::Owned(col.evaluate_with_twiddles(eval_domain, &twiddles))) | ||
} else { | ||
trace.evals.as_cols_ref().map_cols(|c| Cow::Borrowed(*c)) | ||
}; | ||
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// Denom inverses. | ||
let log_expand = eval_domain.log_size() - trace_domain.log_size(); | ||
let mut denom_inv = (0..1 << log_expand) | ||
.map(|i| coset_vanishing(trace_domain.coset(), eval_domain.at(i)).inverse()) | ||
.collect_vec(); | ||
utils::bit_reverse(&mut denom_inv); | ||
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// Accumulator. | ||
let [mut accum] = | ||
evaluation_accumulator.columns([(eval_domain.log_size(), self.n_constraints())]); | ||
accum.random_coeff_powers.reverse(); | ||
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let _span = span!(Level::INFO, "Constraint pointwise eval").entered(); | ||
for vec_row in 0..(1 << (eval_domain.log_size() - LOG_N_LANES)) { | ||
let trace_cols = trace.as_cols_ref().map_cols(|c| c.as_ref()); | ||
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// Evaluate constrains at row. | ||
let eval = SimdDomainEvaluator::new( | ||
&trace_cols, | ||
vec_row, | ||
&accum.random_coeff_powers, | ||
trace_domain.log_size(), | ||
eval_domain.log_size(), | ||
); | ||
let row_res = self.evaluate(eval).row_res; | ||
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// Finalize row. | ||
unsafe { | ||
let denom_inv = PackedBaseField::broadcast( | ||
denom_inv[vec_row >> (trace_domain.log_size() - LOG_N_LANES)], | ||
); | ||
accum | ||
.col | ||
.set_packed(vec_row, accum.col.packed_at(vec_row) + row_res * denom_inv) | ||
} | ||
} | ||
} | ||
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fn lookup_values(&self, _trace: &ComponentTrace<'_, SimdBackend>) -> LookupValues { | ||
LookupValues::default() | ||
} | ||
} |
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