feat!: Drop support for the legacy SSA

crates/lsp/src/lib.rs

@@ -194,7 +194,7 @@ fn on_code_lens_request(
 
     // We ignore the warnings and errors produced by compilation for producing codelenses
     // because we can still get the test functions even if compilation fails
-    let _ = check_crate(&mut context, crate_id, false, false);
+    let _ = check_crate(&mut context, crate_id, false);
 
     let fm = &context.file_manager;
     let files = fm.as_simple_files();
@@ -287,7 +287,7 @@ fn on_did_save_text_document(
 
     let mut diagnostics = Vec::new();
 
-    let file_diagnostics = match check_crate(&mut context, crate_id, false, false) {
+    let file_diagnostics = match check_crate(&mut context, crate_id, false) {
         Ok(warnings) => warnings,
         Err(errors_and_warnings) => errors_and_warnings,
     };

crates/lsp/src/lib_hacky.rs

@@ -87,7 +87,7 @@ pub fn on_code_lens_request(
 
     // We ignore the warnings and errors produced by compilation for producing codelenses
     // because we can still get the test functions even if compilation fails
-    let _ = check_crate(&mut context, crate_id, false, false);
+    let _ = check_crate(&mut context, crate_id, false);
 
     let fm = &context.file_manager;
     let files = fm.as_simple_files();
@@ -206,7 +206,7 @@ pub fn on_did_save_text_document(
         Ok(res) => res,
     };
 
-    let file_diagnostics = match check_crate(&mut context, crate_id, false, false) {
+    let file_diagnostics = match check_crate(&mut context, crate_id, false) {
         Ok(warnings) => warnings,
         Err(errors_and_warnings) => errors_and_warnings,
     };

crates/nargo_cli/src/cli/check_cmd.rs

@@ -37,12 +37,7 @@ fn check_from_path<B: Backend>(
     compile_options: &CompileOptions,
 ) -> Result<(), CliError<B>> {
     let (mut context, crate_id) = resolve_root_manifest(program_dir, None)?;
-    check_crate_and_report_errors(
-        &mut context,
-        crate_id,
-        compile_options.deny_warnings,
-        compile_options.legacy_ssa,
-    )?;
+    check_crate_and_report_errors(&mut context, crate_id, compile_options.deny_warnings)?;
 
     // XXX: We can have a --overwrite flag to determine if you want to overwrite the Prover/Verifier.toml files
     if let Some((parameters, return_type)) = compute_function_signature(&context, &crate_id) {
@@ -220,9 +215,7 @@ pub(crate) fn check_crate_and_report_errors(
     context: &mut Context,
     crate_id: CrateId,
     deny_warnings: bool,
-    legacy_ssa: bool,
 ) -> Result<(), ReportedErrors> {
-    let result =
-        check_crate(context, crate_id, deny_warnings, legacy_ssa).map(|warnings| ((), warnings));
+    let result = check_crate(context, crate_id, deny_warnings).map(|warnings| ((), warnings));
     super::compile_cmd::report_errors(result, context, deny_warnings)
 }

crates/nargo_cli/src/cli/mod.rs

@@ -112,7 +112,7 @@ mod tests {
         let mut context = Context::new(fm, graph);
         let crate_id = create_local_crate(&mut context, root_file, CrateType::Binary);
 
-        let result = check_crate(&mut context, crate_id, false, false);
+        let result = check_crate(&mut context, crate_id, false);
         let success = result.is_ok();
 
         let errors = match result {

crates/nargo_cli/src/cli/test_cmd.rs

@@ -46,12 +46,7 @@ fn run_tests<B: Backend>(
     compile_options: &CompileOptions,
 ) -> Result<(), CliError<B>> {
     let (mut context, crate_id) = resolve_root_manifest(program_dir, None)?;
-    check_crate_and_report_errors(
-        &mut context,
-        crate_id,
-        compile_options.deny_warnings,
-        compile_options.legacy_ssa,
-    )?;
+    check_crate_and_report_errors(&mut context, crate_id, compile_options.deny_warnings)?;
 
     let test_functions = match context.crate_graph.crate_type(crate_id) {
         noirc_frontend::graph::CrateType::Workspace => {

crates/noirc_driver/src/lib.rs

@@ -7,8 +7,7 @@ use clap::Args;
 use fm::FileId;
 use noirc_abi::FunctionSignature;
 use noirc_errors::{CustomDiagnostic, FileDiagnostic};
-use noirc_evaluator::legacy_create_circuit;
-use noirc_evaluator::ssa_refactor::create_circuit;
+use noirc_evaluator::create_circuit;
 use noirc_frontend::graph::{CrateId, CrateName, CrateType};
 use noirc_frontend::hir::def_map::{Contract, CrateDefMap};
 use noirc_frontend::hir::Context;
@@ -39,10 +38,6 @@ pub struct CompileOptions {
     /// Treat all warnings as errors
     #[arg(short, long)]
     pub deny_warnings: bool,
-
-    /// Compile and optimize using the old deprecated SSA pass
-    #[arg(long)]
-    pub legacy_ssa: bool,
 }
 
 /// Helper type used to signify where only warnings are expected in file diagnostics
@@ -132,7 +127,6 @@ pub fn check_crate(
     context: &mut Context,
     crate_id: CrateId,
     deny_warnings: bool,
-    legacy_ssa: bool,
 ) -> Result<Warnings, ErrorsAndWarnings> {
     // Add the stdlib before we check the crate
     // TODO: This should actually be done when constructing the driver and then propagated to each dependency when added;
@@ -147,8 +141,6 @@ pub fn check_crate(
     let std_crate = context.crate_graph.add_stdlib(CrateType::Library, root_file_id);
     propagate_dep(context, std_crate, &CrateName::new(std_crate_name).unwrap());
 
-    context.def_interner.legacy_ssa = legacy_ssa;
-
     let mut errors = vec![];
     match context.crate_graph.crate_type(crate_id) {
         CrateType::Workspace => {
@@ -187,7 +179,7 @@ pub fn compile_main(
     crate_id: CrateId,
     options: &CompileOptions,
 ) -> Result<(CompiledProgram, Warnings), ErrorsAndWarnings> {
-    let warnings = check_crate(context, crate_id, options.deny_warnings, options.legacy_ssa)?;
+    let warnings = check_crate(context, crate_id, options.deny_warnings)?;
 
     let main = match context.get_main_function(&crate_id) {
         Some(m) => m,
@@ -216,7 +208,7 @@ pub fn compile_contracts(
     crate_id: CrateId,
     options: &CompileOptions,
 ) -> Result<(Vec<CompiledContract>, Warnings), ErrorsAndWarnings> {
-    let warnings = check_crate(context, crate_id, options.deny_warnings, options.legacy_ssa)?;
+    let warnings = check_crate(context, crate_id, options.deny_warnings)?;
 
     let contracts = context.get_all_contracts(&crate_id);
     let mut compiled_contracts = vec![];
@@ -310,11 +302,8 @@ pub fn compile_no_check(
 ) -> Result<CompiledProgram, FileDiagnostic> {
     let program = monomorphize(main_function, &context.def_interner);
 
-    let (circuit, debug, abi) = if options.legacy_ssa {
-        legacy_create_circuit(program, options.show_ssa, show_output)?
-    } else {
-        create_circuit(program, options.show_ssa, options.show_brillig, show_output)?
-    };
+    let (circuit, debug, abi) =
+        create_circuit(program, options.show_ssa, options.show_brillig, show_output)?;
 
     Ok(CompiledProgram { circuit, debug, abi })
 }

crates/noirc_evaluator/Cargo.toml

@@ -11,12 +11,7 @@ noirc_frontend.workspace = true
 noirc_errors.workspace = true
 noirc_abi.workspace = true
 acvm.workspace = true
-arena.workspace = true
 iter-extended.workspace = true
 thiserror.workspace = true
 num-bigint = "0.4"
-num-traits = "0.2.8"
 im = "15.1"
-
-[dev-dependencies]
-rand="0.8.5"