cgen: store return vals in tmp vars with -autofree
Alexander Medvednikov
parent
92eea7f95a
commit
5eb76606ae
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@ -103,6 +103,12 @@ pub fn mkdir(path string) ?bool {
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if path == '.' {
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return true
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}
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/*
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mut k := 0
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defer {
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k = 1
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}
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*/
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apath := os.real_path(path)
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/*
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$if linux {
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@ -394,16 +394,11 @@ fn (g &Gen) cc_type(t table.Type) string {
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if info.generic_types.len > 0 {
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mut sgtyps := '_T'
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for gt in info.generic_types {
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gts := g.table.get_type_symbol(if gt.has_flag(.generic) {
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g.unwrap_generic(gt)
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} else {
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gt
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})
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gts := g.table.get_type_symbol(if gt.has_flag(.generic) { g.unwrap_generic(gt) } else { gt })
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sgtyps += '_$gts.name'
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}
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styp += sgtyps
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}
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else if styp.contains('<') {
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} else if styp.contains('<') {
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// TODO: yuck
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styp = styp.replace('<', '_T_').replace('>', '').replace(',', '_')
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}
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@ -772,7 +767,9 @@ fn (mut g Gen) stmt(node ast.Stmt) {
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}
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ast.Return {
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g.write_defer_stmts_when_needed()
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g.write_autofree_stmts_when_needed(node)
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if g.pref.autofree {
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g.write_autofree_stmts_when_needed(node)
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}
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g.return_statement(node)
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}
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ast.SqlStmt {
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@ -1095,18 +1092,18 @@ fn (mut g Gen) gen_assign_stmt(assign_stmt ast.AssignStmt) {
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info := sym.info as table.Array
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styp := g.typ(info.elem_type)
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g.write('$styp _var_$left.pos.pos = *($styp*)array_get(')
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g.expr(it.left)
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g.expr(left.left)
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g.write(', ')
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g.expr(it.index)
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g.expr(left.index)
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g.writeln(');')
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} else if sym.kind == .map {
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info := sym.info as table.Map
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styp := g.typ(info.value_type)
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zero := g.type_default(info.value_type)
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g.write('$styp _var_$left.pos.pos = *($styp*)map_get(')
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g.expr(it.left)
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g.expr(left.left)
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g.write(', ')
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g.expr(it.index)
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g.expr(left.index)
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g.writeln(', &($styp[]){ $zero });')
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}
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}
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@ -2486,7 +2483,21 @@ fn (mut g Gen) return_statement(node ast.Return) {
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g.writeln('return $opt_tmp;')
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return
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}
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g.write('return ')
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free := g.pref.autofree && node.exprs[0] is ast.CallExpr
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mut tmp := ''
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if free {
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// `return foo(a, b, c)`
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// `tmp := foo(a, b, c); free(a); free(b); free(c); return tmp;`
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// Save return value in a temp var so that it all args (a,b,c) can be freed
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tmp = g.new_tmp_var()
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g.write(g.typ(g.fn_decl.return_type))
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g.write(' ')
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g.write(tmp)
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g.write(' = ')
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// g.write('return $tmp;')
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} else {
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g.write('return ')
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}
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cast_interface := sym.kind == .interface_ && node.types[0] != g.fn_decl.return_type
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if cast_interface {
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g.interface_call(node.types[0], g.fn_decl.return_type)
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@ -2495,6 +2506,10 @@ fn (mut g Gen) return_statement(node ast.Return) {
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if cast_interface {
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g.write(')')
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}
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if free {
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g.writeln(';')
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g.write('return $tmp')
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}
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} else {
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g.write('return')
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}
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@ -2824,7 +2839,7 @@ fn (mut g Gen) write_init_function() {
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g.writeln('void _vcleanup() {')
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// g.writeln('puts("cleaning up...");')
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g.writeln(g.cleanups.str())
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//g.writeln('\tfree(g_str_buf);')
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// g.writeln('\tfree(g_str_buf);')
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g.writeln('}')
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if g.pref.printfn_list.len > 0 && '_vcleanup' in g.pref.printfn_list {
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println(g.out.after(fn_vcleanup_start_pos))
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@ -74,7 +74,7 @@ fn (mut g Gen) gen_fn_decl(it ast.FnDecl) {
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}
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mut impl_fn_name := name
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if is_live_wrap {
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impl_fn_name = 'impl_live_${name}'
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impl_fn_name = 'impl_live_$name'
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}
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g.last_fn_c_name = impl_fn_name
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//
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@ -113,17 +113,16 @@ fn (mut g Gen) gen_fn_decl(it ast.FnDecl) {
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// an early exit, which will leave the mutex locked.
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mut fn_args_list := []string{}
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for ia, fa in fargs {
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fn_args_list << '${fargtypes[ia]} ${fa}'
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fn_args_list << '${fargtypes[ia]} $fa'
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}
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mut live_fncall := '${impl_fn_name}(' + fargs.join(', ') + ');'
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mut live_fnreturn := ''
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if type_name != 'void' {
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live_fncall = '${type_name} res = ${live_fncall}'
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live_fncall = '$type_name res = $live_fncall'
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live_fnreturn = 'return res;'
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}
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g.definitions.writeln('$type_name ${name}(' + fn_args_list.join(', ') + ');')
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g.hotcode_definitions.writeln('$type_name ${name}(' + fn_args_list.join(', ') +
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'){')
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g.hotcode_definitions.writeln('$type_name ${name}(' + fn_args_list.join(', ') + '){')
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g.hotcode_definitions.writeln(' pthread_mutex_lock(&live_fn_mutex);')
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g.hotcode_definitions.writeln(' $live_fncall')
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g.hotcode_definitions.writeln(' pthread_mutex_unlock(&live_fn_mutex);')
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@ -140,7 +139,7 @@ fn (mut g Gen) gen_fn_decl(it ast.FnDecl) {
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// /////////
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if g.autofree {
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// TODO: remove this, when g.write_autofree_stmts_when_needed works properly
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g.writeln(g.autofree_scope_vars(it.body_pos.pos))
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// g.writeln(g.autofree_scope_vars(it.body_pos.pos))
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}
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g.writeln('}')
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g.defer_stmts = []
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@ -154,12 +153,9 @@ fn (mut g Gen) write_autofree_stmts_when_needed(r ast.Return) {
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// TODO: write_autofree_stmts_when_needed should not free the returned variables.
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// It may require rewriting g.return_statement to assign the expressions
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// to temporary variables, then protecting *them* from autofreeing ...
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/*
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g.writeln('/* autofreeings before return: -------')
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//g.write( g.autofree_scope_vars(r.pos.pos) )
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g.write( g.autofree_scope_vars(g.fn_decl.body_pos.pos) )
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g.writeln('--------------------------------------------------- */')
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*/
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// g.writeln('// autofreeings before return: -------')
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// g.writeln(g.autofree_scope_vars(g.fn_decl.body_pos.pos))
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// g.writeln('//--------------------------------------------------- ') // //g.write( g.autofree_scope_vars(r.pos.pos) )
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}
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fn (mut g Gen) write_defer_stmts_when_needed() {
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@ -248,7 +244,9 @@ fn (mut g Gen) call_expr(node ast.CallExpr) {
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return
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}
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g.inside_call = true
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defer {g.inside_call = false}
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defer {
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g.inside_call = false
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}
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gen_or := node.or_block.kind != .absent
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cur_line := if gen_or && g.is_assign_rhs {
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line := g.go_before_stmt(0)
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@ -336,8 +334,8 @@ fn (mut g Gen) method_call(node ast.CallExpr) {
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g.gen_str_for_type_with_styp(node.receiver_type, styp)
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}
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// TODO performance, detect `array` method differently
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if left_sym.kind == .array &&
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node.name in ['repeat', 'sort_with_compare', 'free', 'push_many', 'trim', 'first', 'last', 'clone', 'reverse', 'slice'] {
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if left_sym.kind == .array && node.name in
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['repeat', 'sort_with_compare', 'free', 'push_many', 'trim', 'first', 'last', 'clone', 'reverse', 'slice'] {
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// && rec_sym.name == 'array' {
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// && rec_sym.name == 'array' && receiver_name.starts_with('array') {
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// `array_byte_clone` => `array_clone`
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