librustc: drop AST before running LLVM, frees 400mb on a librustc build
This commit is contained in:
Graydon Hoare
parent
6264df5331
commit
b4a3fe25c6
4 changed files with 75 additions and 71 deletions
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@ -172,15 +172,21 @@ pub enum compile_upto {
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// For continuing compilation after a parsed crate has been
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// modified
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#[fixed_stack_segment]
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pub fn compile_rest(sess: Session,
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cfg: ast::crate_cfg,
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upto: compile_upto,
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outputs: Option<@OutputFilenames>,
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curr: Option<@ast::crate>)
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-> (@ast::crate, Option<ty::ctxt>) {
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-> (Option<@ast::crate>, Option<ty::ctxt>) {
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let time_passes = sess.time_passes();
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let mut crate = curr.get();
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let (llmod, link_meta) = {
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let mut crate = curr.unwrap();
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*sess.building_library = session::building_library(
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sess.opts.crate_type, crate, sess.opts.test);
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@ -195,7 +201,7 @@ pub fn compile_rest(sess: Session,
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crate = time(time_passes, ~"maybe building test harness", ||
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front::test::modify_for_testing(sess, crate));
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if upto == cu_expand { return (crate, None); }
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if upto == cu_expand { return (Some(crate), None); }
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crate = time(time_passes, ~"intrinsic injection", ||
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front::intrinsic_inject::inject_intrinsic(sess, crate));
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@ -236,10 +242,6 @@ pub fn compile_rest(sess: Session,
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let rp_set = time(time_passes, ~"region parameterization inference", ||
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middle::region::determine_rp_in_crate(sess, ast_map, def_map, crate));
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let outputs = outputs.get();
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let (llmod, link_meta) = {
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let ty_cx = ty::mk_ctxt(sess, def_map, ast_map, freevars,
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region_map, rp_set, lang_items);
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@ -255,7 +257,7 @@ pub fn compile_rest(sess: Session,
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middle::check_const::check_crate(sess, crate, ast_map, def_map,
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method_map, ty_cx));
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if upto == cu_typeck { return (crate, Some(ty_cx)); }
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if upto == cu_typeck { return (Some(crate), Some(ty_cx)); }
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time(time_passes, ~"privacy checking", ||
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middle::privacy::check_crate(ty_cx, &method_map, crate));
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@ -289,7 +291,7 @@ pub fn compile_rest(sess: Session,
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time(time_passes, ~"lint checking", ||
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lint::check_crate(ty_cx, crate));
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if upto == cu_no_trans { return (crate, Some(ty_cx)); }
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if upto == cu_no_trans { return (Some(crate), Some(ty_cx)); }
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let maps = astencode::Maps {
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root_map: root_map,
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@ -300,13 +302,14 @@ pub fn compile_rest(sess: Session,
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capture_map: capture_map
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};
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let outputs = outputs.get_ref();
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time(time_passes, ~"translation", ||
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trans::base::trans_crate(sess, crate, ty_cx,
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&outputs.obj_filename,
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exp_map2, maps))
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};
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let outputs = outputs.get_ref();
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if (sess.opts.debugging_opts & session::print_link_args) != 0 {
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io::println(str::connect(link::link_args(sess,
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&outputs.obj_filename, &outputs.out_filename, link_meta), " "));
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@ -335,24 +338,24 @@ pub fn compile_rest(sess: Session,
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(sess.opts.is_static && *sess.building_library) ||
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sess.opts.jit;
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if stop_after_codegen { return (crate, None); }
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if stop_after_codegen { return (None, None); }
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time(time_passes, ~"linking", ||
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link::link_binary(sess,
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&outputs.obj_filename,
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&outputs.out_filename, link_meta));
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return (crate, None);
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return (None, None);
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}
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pub fn compile_upto(sess: Session, cfg: ast::crate_cfg,
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input: &input, upto: compile_upto,
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outputs: Option<@OutputFilenames>)
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-> (@ast::crate, Option<ty::ctxt>) {
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-> (Option<@ast::crate>, Option<ty::ctxt>) {
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let time_passes = sess.time_passes();
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let crate = time(time_passes, ~"parsing",
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|| parse_input(sess, copy cfg, input) );
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if upto == cu_parse { return (crate, None); }
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if upto == cu_parse { return (Some(crate), None); }
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compile_rest(sess, cfg, upto, outputs, Some(crate))
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}
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@ -437,7 +440,7 @@ pub fn pretty_print_input(sess: Session, cfg: ast::crate_cfg, input: &input,
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let src = sess.codemap.get_filemap(source_name(input)).src;
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do io::with_str_reader(*src) |rdr| {
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pprust::print_crate(sess.codemap, sess.parse_sess.interner,
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sess.span_diagnostic, crate,
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sess.span_diagnostic, crate.unwrap(),
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source_name(input),
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rdr, io::stdout(), ann, is_expanded);
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}
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@ -144,9 +144,10 @@ fn run(repl: Repl, input: ~str) -> Repl {
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let outputs = driver::build_output_filenames(&wrapped, &None, &None, sess);
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debug!("calling compile_upto");
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let (crate, _) = driver::compile_upto(sess, cfg, &wrapped,
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driver::cu_everything,
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Some(outputs));
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let crate = driver::parse_input(sess, copy cfg, &wrapped);
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driver::compile_rest(sess, cfg, driver::cu_everything,
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Some(outputs), Some(crate));
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let mut opt = None;
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@ -101,7 +101,7 @@ impl<'self> PkgScript<'self> {
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input: input,
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sess: sess,
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cfg: cfg,
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crate: crate,
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crate: crate.unwrap(),
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build_dir: work_dir
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}
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}
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@ -426,7 +426,7 @@ pub fn compile_crate_from_input(input: &driver::input,
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debug!("Calling compile_upto, outputs = %?", outputs);
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let (crate, _) = driver::compile_upto(sess, copy cfg, input,
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driver::cu_parse, Some(outputs));
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let mut crate = crate;
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let mut crate = crate.unwrap();
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debug!("About to inject link_meta info...");
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// Inject the inferred link_meta info if it's not already there
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