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Drop arguments on the caller side, not the callee

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This makes it easier for the caller to optimize the take/drop away for
temporary values, and opens up new possibilities for alias handling.

Breaks tail calls.
This commit is contained in:
Marijn Haverbeke 2011-08-19 14:34:45 +02:00
parent 35c962e9a1
commit b24f978011
8 changed files with 125 additions and 147 deletions
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28
src/comp/driver/rustc.rs
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@ -148,26 +148,24 @@ fn compile_input(sess: session::session, cfg: ast::crate_cfg, input: str,
time(time_passes, "freevar finding",
bind freevars::annotate_freevars(sess, def_map, crate));
let ty_cx = ty::mk_ctxt(sess, def_map, ext_map, ast_map, freevars);
time::<()>(time_passes, "typechecking",
bind typeck::check_crate(ty_cx, crate));
time::<()>(time_passes, "alt checking",
bind middle::check_alt::check_crate(ty_cx, crate));
time(time_passes, "typechecking",
bind typeck::check_crate(ty_cx, crate));
time(time_passes, "alt checking",
bind middle::check_alt::check_crate(ty_cx, crate));
if sess.get_opts().run_typestate {
time(time_passes, "typestate checking",
bind middle::tstate::ck::check_crate(ty_cx, crate));
}
time(time_passes, "alias checking",
bind middle::alias::check_crate(ty_cx, crate));
time::<()>(time_passes, "kind checking",
bind kind::check_crate(ty_cx, crate));
let mut_map = time(time_passes, "alias checking",
bind middle::alias::check_crate(ty_cx, crate));
time(time_passes, "kind checking",
bind kind::check_crate(ty_cx, crate));
if sess.get_opts().no_trans { ret; }
let llmod =
time::<llvm::llvm::ModuleRef>(time_passes, "translation",
bind trans::trans_crate(sess, crate,
ty_cx, output,
ast_map));
time::<()>(time_passes, "LLVM passes",
bind link::write::run_passes(sess, llmod, output));
let llmod = time(time_passes, "translation",
bind trans::trans_crate(sess, crate, ty_cx, output,
ast_map, mut_map));
time(time_passes, "LLVM passes",
bind link::write::run_passes(sess, llmod, output));
}
fn pretty_print_input(sess: session::session, cfg: ast::crate_cfg, input: str,