feat: Add Acir debug information

Cargo.toml

@@ -40,7 +40,7 @@ noir_wasm = { path = "crates/wasm" }
 
 cfg-if = "1.0.0"
 clap = { version = "4.1.4", features = ["derive"] }
-codespan = "0.11.1"
+codespan = {version = "0.11.1", features = ["serialization"]}
 codespan-lsp = "0.11.1"
 codespan-reporting = "0.11.1"
 chumsky = { git = "https://github.com/jfecher/chumsky", rev = "ad9d312" }

crates/fm/Cargo.toml

@@ -10,6 +10,7 @@ edition.workspace = true
 codespan-reporting.workspace = true
 cfg-if.workspace = true
 rust-embed = "6.6.0"
+serde.workspace = true
 
 [target.'cfg(target_arch = "wasm32")'.dependencies]
 wasm-bindgen.workspace = true

crates/fm/src/file_map.rs

@@ -1,8 +1,8 @@
+use crate::FileManager;
 use codespan_reporting::files::{SimpleFile, SimpleFiles};
+use serde::{Deserialize, Serialize};
 use std::path::PathBuf;
 
-use crate::FileManager;
-
 // XXX: File and FileMap serve as opaque types, so that the rest of the library does not need to import the dependency
 // or worry about when we change the dep
 
@@ -34,7 +34,7 @@ impl From<&PathBuf> for PathString {
 pub struct FileMap(SimpleFiles<PathString, String>);
 
 // XXX: Note that we derive Default here due to ModuleOrigin requiring us to set a FileId
-#[derive(Default, Debug, Clone, PartialEq, Eq, Copy, Hash)]
+#[derive(Default, Debug, Clone, PartialEq, Eq, Copy, Hash, Serialize, Deserialize)]
 pub struct FileId(usize);
 
 impl FileId {

crates/nargo/Cargo.toml

@@ -18,3 +18,4 @@ iter-extended.workspace = true
 toml.workspace = true
 serde.workspace = true
 thiserror.workspace = true
+noirc_errors.workspace = true

crates/nargo/src/ops/preprocess.rs

@@ -1,5 +1,6 @@
 use acvm::ProofSystemCompiler;
 use noirc_driver::{CompiledProgram, ContractFunction};
+use noirc_errors::debug_info::DebugInfo;
 
 use crate::artifacts::{contract::PreprocessedContractFunction, program::PreprocessedProgram};
 
@@ -11,7 +12,7 @@ pub fn preprocess_program<B: ProofSystemCompiler>(
     include_keys: bool,
     common_reference_string: &[u8],
     compiled_program: CompiledProgram,
-) -> Result<PreprocessedProgram, B::Error> {
+) -> Result<(PreprocessedProgram, DebugInfo), B::Error> {
     // TODO: currently `compiled_program`'s bytecode is already optimized for the backend.
     // In future we'll need to apply those optimizations here.
     let optimized_bytecode = compiled_program.circuit;
@@ -24,13 +25,16 @@ pub fn preprocess_program<B: ProofSystemCompiler>(
         (None, None)
     };
 
-    Ok(PreprocessedProgram {
-        backend: String::from(BACKEND_IDENTIFIER),
-        abi: compiled_program.abi,
-        bytecode: optimized_bytecode,
-        proving_key,
-        verification_key,
-    })
+    Ok((
+        PreprocessedProgram {
+            backend: String::from(BACKEND_IDENTIFIER),
+            abi: compiled_program.abi,
+            bytecode: optimized_bytecode,
+            proving_key,
+            verification_key,
+        },
+        compiled_program.debug,
+    ))
 }
 
 pub fn preprocess_contract_function<B: ProofSystemCompiler>(

crates/nargo_cli/Cargo.toml

@@ -30,6 +30,7 @@ noirc_frontend.workspace = true
 noirc_abi.workspace = true
 noirc_errors.workspace = true
 acvm.workspace = true
+fm.workspace = true
 toml.workspace = true
 serde.workspace = true
 serde_json.workspace = true

crates/nargo_cli/src/cli/codegen_verifier_cmd.rs

@@ -51,12 +51,12 @@ pub(crate) fn run<B: Backend>(
             (common_reference_string, program)
         }
         None => {
-            let program =
+            let (program, _) =
                 compile_circuit(backend, config.program_dir.as_ref(), &args.compile_options)?;
             let common_reference_string =
                 update_common_reference_string(backend, &common_reference_string, &program.circuit)
                     .map_err(CliError::CommonReferenceStringError)?;
-            let program = preprocess_program(backend, true, &common_reference_string, program)
+            let (program, _) = preprocess_program(backend, true, &common_reference_string, program)
                 .map_err(CliError::ProofSystemCompilerError)?;
             (common_reference_string, program)
         }

crates/nargo_cli/src/cli/compile_cmd.rs

@@ -1,5 +1,7 @@
+use acvm::acir::circuit::OpcodeLabel;
 use acvm::{acir::circuit::Circuit, Backend};
 use iter_extended::try_vecmap;
+use iter_extended::vecmap;
 use nargo::{artifacts::contract::PreprocessedContract, NargoError};
 use noirc_driver::{
     compile_contracts, compile_main, CompileOptions, CompiledProgram, ErrorsAndWarnings, Warnings,
@@ -68,8 +70,7 @@ pub(crate) fn run<B: Backend>(
             try_vecmap(contracts, |contract| {
                 let preprocessed_contract_functions =
                     try_vecmap(contract.functions, |mut func| {
-                        func.bytecode = optimize_circuit(backend, func.bytecode)?;
-
+                        func.bytecode = optimize_circuit(backend, func.bytecode)?.0;
                         common_reference_string = update_common_reference_string(
                             backend,
                             &common_reference_string,
@@ -100,13 +101,12 @@ pub(crate) fn run<B: Backend>(
             );
         }
     } else {
-        let program = compile_circuit(backend, &config.program_dir, &args.compile_options)?;
-
+        let (program, _) = compile_circuit(backend, &config.program_dir, &args.compile_options)?;
         common_reference_string =
             update_common_reference_string(backend, &common_reference_string, &program.circuit)
                 .map_err(CliError::CommonReferenceStringError)?;
 
-        let preprocessed_program =
+        let (preprocessed_program, _) =
             preprocess_program(backend, args.include_keys, &common_reference_string, program)
                 .map_err(CliError::ProofSystemCompilerError)?;
         save_program_to_file(&preprocessed_program, &args.circuit_name, circuit_dir);
@@ -121,27 +121,37 @@ pub(crate) fn compile_circuit<B: Backend>(
     backend: &B,
     program_dir: &Path,
     compile_options: &CompileOptions,
-) -> Result<CompiledProgram, CliError<B>> {
+) -> Result<(CompiledProgram, Context), CliError<B>> {
     let mut context = resolve_root_manifest(program_dir)?;
     let result = compile_main(&mut context, compile_options);
     let mut program = report_errors(result, &context, compile_options.deny_warnings)?;
 
     // Apply backend specific optimizations.
-    program.circuit = optimize_circuit(backend, program.circuit).unwrap();
-    Ok(program)
+    let (optimized_circuit, opcode_labels) = optimize_circuit(backend, program.circuit)
+        .expect("Backend does not support an opcode that is in the IR");
+
+    program.circuit = optimized_circuit;
+    let opcode_ids = vecmap(opcode_labels, |label| match label {
+        OpcodeLabel::Unresolved => {
+            unreachable!("Compiled circuit opcodes must resolve to some index")
+        }
+        OpcodeLabel::Resolved(index) => index as usize,
+    });
+    program.debug.update_acir(opcode_ids);
+
+    Ok((program, context))
 }
 
 pub(super) fn optimize_circuit<B: Backend>(
     backend: &B,
     circuit: Circuit,
-) -> Result<Circuit, CliError<B>> {
-    let (optimized_circuit, _): (Circuit, Vec<acvm::acir::circuit::OpcodeLabel>) =
-        acvm::compiler::compile(circuit, backend.np_language(), |opcode| {
-            backend.supports_opcode(opcode)
-        })
-        .map_err(|_| NargoError::CompilationError)?;
-
-    Ok(optimized_circuit)
+) -> Result<(Circuit, Vec<OpcodeLabel>), CliError<B>> {
+    let result = acvm::compiler::compile(circuit, backend.np_language(), |opcode| {
+        backend.supports_opcode(opcode)
+    })
+    .map_err(|_| NargoError::CompilationError)?;
+
+    Ok(result)
 }
 
 /// Helper function for reporting any errors in a Result<(T, Warnings), ErrorsAndWarnings>

crates/nargo_cli/src/cli/execute_cmd.rs

@@ -1,11 +1,15 @@
 use std::path::Path;
 
+use acvm::acir::circuit::OpcodeLabel;
 use acvm::acir::{circuit::Circuit, native_types::WitnessMap};
 use acvm::Backend;
 use clap::Args;
+use nargo::NargoError;
 use noirc_abi::input_parser::{Format, InputValue};
 use noirc_abi::{Abi, InputMap};
 use noirc_driver::{CompileOptions, CompiledProgram};
+use noirc_errors::{debug_info::DebugInfo, CustomDiagnostic};
+use noirc_frontend::hir::Context;
 
 use super::fs::{inputs::read_inputs_from_file, witness::save_witness_to_dir};
 use super::NargoConfig;
@@ -57,29 +61,78 @@ fn execute_with_path<B: Backend>(
     prover_name: String,
     compile_options: &CompileOptions,
 ) -> Result<(Option<InputValue>, WitnessMap), CliError<B>> {
-    let CompiledProgram { abi, circuit } = compile_circuit(backend, program_dir, compile_options)?;
+    let (compiled_program, context) = compile_circuit(backend, program_dir, compile_options)?;
+    let CompiledProgram { abi, circuit, debug } = compiled_program;
 
     // Parse the initial witness values from Prover.toml
     let (inputs_map, _) =
         read_inputs_from_file(program_dir, prover_name.as_str(), Format::Toml, &abi)?;
 
-    let solved_witness = execute_program(backend, circuit, &abi, &inputs_map)?;
-
+    let solved_witness =
+        execute_program(backend, circuit, &abi, &inputs_map, Some((debug, context)))?;
     let public_abi = abi.public_abi();
     let (_, return_value) = public_abi.decode(&solved_witness)?;
 
     Ok((return_value, solved_witness))
 }
 
+fn extract_unsatisfied_constraint_from_nargo_error(nargo_err: &NargoError) -> Option<usize> {
+    let solving_err = match nargo_err {
+        nargo::NargoError::SolvingError(err) => err,
+        _ => return None,
+    };
+
+    match solving_err {
+        acvm::pwg::OpcodeResolutionError::UnsatisfiedConstrain { opcode_label } => {
+            match opcode_label {
+                OpcodeLabel::Unresolved => {
+                    unreachable!("Cannot resolve index for unsatisfied constraint")
+                }
+                OpcodeLabel::Resolved(opcode_index) => Some(*opcode_index as usize),
+            }
+        }
+        _ => None,
+    }
+}
+fn report_unsatisfied_constraint_error(
+    opcode_idx: Option<usize>,
+    debug: &DebugInfo,
+    context: &Context,
+) {
+    if let Some(opcode_index) = opcode_idx {
+        if let Some(loc) = debug.opcode_location(opcode_index) {
+            noirc_errors::reporter::report(
+                &context.file_manager,
+                &CustomDiagnostic::simple_error(
+                    "Unsatisfied constraint".to_string(),
+                    "Constraint failed".to_string(),
+                    loc.span,
+                ),
+                Some(loc.file),
+                false,
+            );
+        }
+    }
+}
+
 pub(crate) fn execute_program<B: Backend>(
     backend: &B,
     circuit: Circuit,
     abi: &Abi,
     inputs_map: &InputMap,
+    debug_data: Option<(DebugInfo, Context)>,
 ) -> Result<WitnessMap, CliError<B>> {
     let initial_witness = abi.encode(inputs_map, None)?;
-
-    let solved_witness = nargo::ops::execute_circuit(backend, circuit, initial_witness)?;
-
-    Ok(solved_witness)
+    let solved_witness_err = nargo::ops::execute_circuit(backend, circuit, initial_witness);
+    match solved_witness_err {
+        Ok(solved_witness) => Ok(solved_witness),
+        Err(err) => {
+            if let Some((debug, context)) = debug_data {
+                let opcode_idx = extract_unsatisfied_constraint_from_nargo_error(&err);
+                report_unsatisfied_constraint_error(opcode_idx, &debug, &context);
+            }
+
+            Err(crate::errors::CliError::NargoError(err))
+        }
+    }
 }

crates/nargo_cli/src/cli/gates_cmd.rs

@@ -28,7 +28,7 @@ fn count_gates_with_path<B: Backend, P: AsRef<Path>>(
     program_dir: P,
     compile_options: &CompileOptions,
 ) -> Result<(), CliError<B>> {
-    let compiled_program = compile_circuit(backend, program_dir.as_ref(), compile_options)?;
+    let (compiled_program, _) = compile_circuit(backend, program_dir.as_ref(), compile_options)?;
     let num_opcodes = compiled_program.circuit.opcodes.len();
 
     println!(

crates/nargo_cli/src/cli/prove_cmd.rs

@@ -91,7 +91,7 @@ pub(crate) fn prove_with_path<B: Backend, P: AsRef<Path>>(
 ) -> Result<Option<PathBuf>, CliError<B>> {
     let common_reference_string = read_cached_common_reference_string();
 
-    let (common_reference_string, preprocessed_program) = match circuit_build_path {
+    let (common_reference_string, preprocessed_program, debug_data) = match circuit_build_path {
         Some(circuit_build_path) => {
             let program = read_program_from_file(circuit_build_path)?;
             let common_reference_string = update_common_reference_string(
@@ -100,16 +100,18 @@ pub(crate) fn prove_with_path<B: Backend, P: AsRef<Path>>(
                 &program.bytecode,
             )
             .map_err(CliError::CommonReferenceStringError)?;
-            (common_reference_string, program)
+            (common_reference_string, program, None)
         }
         None => {
-            let program = compile_circuit(backend, program_dir.as_ref(), compile_options)?;
+            let (program, context) =
+                compile_circuit(backend, program_dir.as_ref(), compile_options)?;
             let common_reference_string =
                 update_common_reference_string(backend, &common_reference_string, &program.circuit)
                     .map_err(CliError::CommonReferenceStringError)?;
-            let program = preprocess_program(backend, true, &common_reference_string, program)
-                .map_err(CliError::ProofSystemCompilerError)?;
-            (common_reference_string, program)
+            let (program, debug) =
+                preprocess_program(backend, true, &common_reference_string, program)
+                    .map_err(CliError::ProofSystemCompilerError)?;
+            (common_reference_string, program, Some((debug, context)))
         }
     };
 
@@ -122,7 +124,7 @@ pub(crate) fn prove_with_path<B: Backend, P: AsRef<Path>>(
     let (inputs_map, _) =
         read_inputs_from_file(&program_dir, prover_name.as_str(), Format::Toml, &abi)?;
 
-    let solved_witness = execute_program(backend, bytecode.clone(), &abi, &inputs_map)?;
+    let solved_witness = execute_program(backend, bytecode.clone(), &abi, &inputs_map, debug_data)?;
 
     // Write public inputs into Verifier.toml
     let public_abi = abi.public_abi();

crates/nargo_cli/src/cli/test_cmd.rs

@@ -92,7 +92,7 @@ fn run_test<B: Backend>(
     let mut program = compile_no_check(context, config, main)
         .map_err(|_| CliError::Generic(format!("Test '{test_name}' failed to compile")))?;
     // Note: We could perform this test using the unoptimized ACIR as generated by `compile_no_check`.
-    program.circuit = optimize_circuit(backend, program.circuit).unwrap();
+    program.circuit = optimize_circuit(backend, program.circuit).unwrap().0;
 
     // Run the backend to ensure the PWG evaluates functions like std::hash::pedersen,
     // otherwise constraints involving these expressions will not error.