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[ASR Pass] Symbolic: Simplify basic_assign to return SubroutineCall
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@Thirumalai-Shaktivel
Thirumalai-Shaktivel committed Nov 25, 2023
1 parent a7eae7b commit f497d07
Showing 1 changed file with 52 additions and 70 deletions.
122 changes: 52 additions & 70 deletions src/libasr/pass/replace_symbolic.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -308,6 +308,52 @@ class ReplaceSymbolicVisitor : public PassUtils::PassVisitor<ReplaceSymbolicVisi
vecbasic_size_sym, vecbasic_size_sym, call_args.p, call_args.n,
ASRUtils::TYPE(ASR::make_Integer_t(al, loc, 4)), nullptr, nullptr));
}

ASR::stmt_t* basic_assign(const Location& loc,
ASR::expr_t *target, ASR::expr_t *value) {
std::string fn_name = "basic_assign";
symbolic_dependencies.push_back(fn_name);
ASR::ttype_t *cptr_type = ASRUtils::TYPE(ASR::make_CPtr_t(al, loc));
ASR::symbol_t *basic_assign_sym = current_scope->resolve_symbol(fn_name);
if ( !basic_assign_sym ) {
std::string header = "symengine/cwrapper.h";
SymbolTable* fn_symtab = al.make_new<SymbolTable>(current_scope->parent);

Vec<ASR::expr_t*> args; args.reserve(al, 2);
ASR::symbol_t* arg1 = ASR::down_cast<ASR::symbol_t>(ASR::make_Variable_t(
al, loc, fn_symtab, s2c(al, "x"), nullptr, 0, ASR::intentType::In,
nullptr, nullptr, ASR::storage_typeType::Default, cptr_type,
nullptr, ASR::abiType::BindC, ASR::Public, ASR::presenceType::Required, true));
fn_symtab->add_symbol(s2c(al, "x"), arg1);
args.push_back(al, ASRUtils::EXPR(ASR::make_Var_t(al, loc, arg1)));
ASR::symbol_t* arg2 = ASR::down_cast<ASR::symbol_t>(ASR::make_Variable_t(
al, loc, fn_symtab, s2c(al, "y"), nullptr, 0, ASR::intentType::In,
nullptr, nullptr, ASR::storage_typeType::Default, cptr_type,
nullptr, ASR::abiType::BindC, ASR::Public, ASR::presenceType::Required, true));
fn_symtab->add_symbol(s2c(al, "y"), arg2);
args.push_back(al, ASRUtils::EXPR(ASR::make_Var_t(al, loc, arg2)));

Vec<ASR::stmt_t*> body; body.reserve(al, 1);
Vec<char*> dep; dep.reserve(al, 1);
basic_assign_sym = ASR::down_cast<ASR::symbol_t>(
ASRUtils::make_Function_t_util(al, loc, fn_symtab, s2c(al, fn_name),
dep.p, dep.n, args.p, args.n, body.p, body.n, nullptr,
ASR::abiType::BindC, ASR::accessType::Public,
ASR::deftypeType::Interface, s2c(al, fn_name), false, false, false,
false, false, nullptr, 0, false, false, false, s2c(al, header)));
current_scope->parent->add_symbol(s2c(al, fn_name), basic_assign_sym);
}
Vec<ASR::call_arg_t> call_args;
call_args.reserve(al, 2);
ASR::call_arg_t call_arg;
call_arg.loc = loc;
call_arg.m_value = target;
call_args.push_back(al, call_arg);
call_arg.m_value = value;
call_args.push_back(al, call_arg);
return ASRUtils::STMT(ASR::make_SubroutineCall_t(al, loc, basic_assign_sym,
basic_assign_sym, call_args.p, call_args.n, nullptr));
}
/********************************** Utils *********************************/

void visit_Function(const ASR::Function_t &x) {
Expand Down Expand Up @@ -780,45 +826,6 @@ class ReplaceSymbolicVisitor : public PassUtils::PassVisitor<ReplaceSymbolicVisi
}
}

ASR::symbol_t* declare_basic_assign_function(Allocator& al, const Location& loc, SymbolTable* module_scope) {
std::string name = "basic_assign";
symbolic_dependencies.push_back(name);
if (!module_scope->get_symbol(name)) {
std::string header = "symengine/cwrapper.h";
SymbolTable* fn_symtab = al.make_new<SymbolTable>(module_scope);

Vec<ASR::expr_t*> args;
args.reserve(al, 2);
ASR::symbol_t* arg1 = ASR::down_cast<ASR::symbol_t>(ASR::make_Variable_t(
al, loc, fn_symtab, s2c(al, "x"), nullptr, 0, ASR::intentType::In,
nullptr, nullptr, ASR::storage_typeType::Default, ASRUtils::TYPE(ASR::make_CPtr_t(al, loc)),
nullptr, ASR::abiType::BindC, ASR::Public, ASR::presenceType::Required, true));
fn_symtab->add_symbol(s2c(al, "x"), arg1);
args.push_back(al, ASRUtils::EXPR(ASR::make_Var_t(al, loc, arg1)));
ASR::symbol_t* arg2 = ASR::down_cast<ASR::symbol_t>(ASR::make_Variable_t(
al, loc, fn_symtab, s2c(al, "y"), nullptr, 0, ASR::intentType::In,
nullptr, nullptr, ASR::storage_typeType::Default, ASRUtils::TYPE(ASR::make_CPtr_t(al, loc)),
nullptr, ASR::abiType::BindC, ASR::Public, ASR::presenceType::Required, true));
fn_symtab->add_symbol(s2c(al, "y"), arg2);
args.push_back(al, ASRUtils::EXPR(ASR::make_Var_t(al, loc, arg2)));

Vec<ASR::stmt_t*> body;
body.reserve(al, 1);

Vec<char*> dep;
dep.reserve(al, 1);

ASR::asr_t* subrout = ASRUtils::make_Function_t_util(al, loc,
fn_symtab, s2c(al, name), dep.p, dep.n, args.p, args.n, body.p, body.n,
nullptr, ASR::abiType::BindC, ASR::accessType::Public,
ASR::deftypeType::Interface, s2c(al, name), false, false, false,
false, false, nullptr, 0, false, false, false, s2c(al, header));
ASR::symbol_t* symbol = ASR::down_cast<ASR::symbol_t>(subrout);
module_scope->add_symbol(s2c(al, name), symbol);
}
return module_scope->get_symbol(name);
}

ASR::symbol_t* declare_basic_str_function(Allocator& al, const Location& loc, SymbolTable* module_scope) {
std::string name = "basic_str";
symbolic_dependencies.push_back(name);
Expand Down Expand Up @@ -1197,22 +1204,9 @@ class ReplaceSymbolicVisitor : public PassUtils::PassVisitor<ReplaceSymbolicVisi
if (ASR::is_a<ASR::Var_t>(*x.m_value) && ASR::is_a<ASR::CPtr_t>(*ASRUtils::expr_type(x.m_value))) {
ASR::symbol_t *v = ASR::down_cast<ASR::Var_t>(x.m_value)->m_v;
if (symbolic_vars_to_free.find(v) == symbolic_vars_to_free.end()) return;
ASR::symbol_t* basic_assign_sym = declare_basic_assign_function(al, x.base.base.loc, module_scope);
ASR::symbol_t* var_sym = ASR::down_cast<ASR::Var_t>(x.m_value)->m_v;
ASR::expr_t* target = ASRUtils::EXPR(ASR::make_Var_t(al, x.base.base.loc, var_sym));

Vec<ASR::call_arg_t> call_args;
call_args.reserve(al, 2);
ASR::call_arg_t call_arg1, call_arg2;
call_arg1.loc = x.base.base.loc;
call_arg1.m_value = x.m_target;
call_arg2.loc = x.base.base.loc;
call_arg2.m_value = target;
call_args.push_back(al, call_arg1);
call_args.push_back(al, call_arg2);
ASR::stmt_t* stmt = ASRUtils::STMT(ASR::make_SubroutineCall_t(al, x.base.base.loc, basic_assign_sym,
basic_assign_sym, call_args.p, call_args.n, nullptr));
pass_result.push_back(al, stmt);
pass_result.push_back(al, basic_assign(x.base.base.loc, x.m_target,
ASRUtils::EXPR(ASR::make_Var_t(al, x.base.base.loc, var_sym))));
} else if (ASR::is_a<ASR::IntrinsicScalarFunction_t>(*x.m_value)) {
ASR::IntrinsicScalarFunction_t* intrinsic_func = ASR::down_cast<ASR::IntrinsicScalarFunction_t>(x.m_value);
if (intrinsic_func->m_type->type == ASR::ttypeType::SymbolicExpression) {
Expand Down Expand Up @@ -1305,22 +1299,10 @@ class ReplaceSymbolicVisitor : public PassUtils::PassVisitor<ReplaceSymbolicVisi
} else if (ASR::is_a<ASR::ListItem_t>(*x.m_value)) {
ASR::ListItem_t* list_item = ASR::down_cast<ASR::ListItem_t>(x.m_value);
if (list_item->m_type->type == ASR::ttypeType::SymbolicExpression) {
ASR::ttype_t *CPtr_type = ASRUtils::TYPE(ASR::make_CPtr_t(al, x.base.base.loc));
ASR::symbol_t* basic_assign_sym = declare_basic_assign_function(al, x.base.base.loc, module_scope);

Vec<ASR::call_arg_t> call_args;
call_args.reserve(al, 2);
ASR::call_arg_t call_arg1, call_arg2;
call_arg1.loc = x.base.base.loc;
call_arg1.m_value = x.m_target;
call_arg2.loc = x.base.base.loc;
call_arg2.m_value = ASRUtils::EXPR(ASR::make_ListItem_t(al, x.base.base.loc, list_item->m_a,
list_item->m_pos, CPtr_type, nullptr));
call_args.push_back(al, call_arg1);
call_args.push_back(al, call_arg2);
ASR::stmt_t* stmt = ASRUtils::STMT(ASR::make_SubroutineCall_t(al, x.base.base.loc, basic_assign_sym,
basic_assign_sym, call_args.p, call_args.n, nullptr));
pass_result.push_back(al, stmt);
ASR::expr_t *value = ASRUtils::EXPR(ASR::make_ListItem_t(al,
x.base.base.loc, list_item->m_a, list_item->m_pos,
ASRUtils::TYPE(ASR::make_CPtr_t(al, x.base.base.loc)), nullptr));
pass_result.push_back(al, basic_assign(x.base.base.loc, x.m_target, value));
}
} else if (ASR::is_a<ASR::SymbolicCompare_t>(*x.m_value)) {
ASR::SymbolicCompare_t *s = ASR::down_cast<ASR::SymbolicCompare_t>(x.m_value);
Expand Down

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