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rustc: Strip cnames before generating glue to avoid duplicates

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This commit is contained in:
Patrick Walton 2011-07-20 19:04:45 -07:00
parent 142ff3bb4e
commit 3ec3b02ed0
2 changed files with 11 additions and 2 deletions
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8
src/comp/middle/trans.rs
View file

@ -1370,9 +1370,11 @@ fn get_derived_tydesc(&@block_ctxt cx, &ty::t t, bool escapes,
ret rslt(cx, v);
}
fn get_tydesc(&@block_ctxt cx, &ty::t t, bool escapes,
fn get_tydesc(&@block_ctxt cx, &ty::t orig_t, bool escapes,
&mutable option::t[@tydesc_info] static_ti) -> result {
auto t = ty::strip_cname(cx.fcx.lcx.ccx.tcx, orig_t);
// Is the supplied type a type param? If so, return the passed-in tydesc.
alt (ty::type_param(cx.fcx.lcx.ccx.tcx, t)) {
case (some(?id)) { ret rslt(cx, cx.fcx.lltydescs.(id)); }
@ -1390,8 +1392,10 @@ fn get_tydesc(&@block_ctxt cx, &ty::t t, bool escapes,
ret rslt(cx, info.tydesc);
}
fn get_static_tydesc(&@block_ctxt cx, &ty::t t, &uint[] ty_params)
fn get_static_tydesc(&@block_ctxt cx, &ty::t orig_t, &uint[] ty_params)
-> @tydesc_info {
auto t = ty::strip_cname(cx.fcx.lcx.ccx.tcx, orig_t);
alt (cx.fcx.lcx.ccx.tydescs.find(t)) {
case (some(?info)) { ret info; }
case (none) {

5
src/comp/middle/ty.rs
View file

@ -108,6 +108,7 @@ export sequence_is_interior;
export struct;
export sort_methods;
export stmt_node_id;
export strip_cname;
export sty;
export substitute_type_params;
export t;
@ -855,10 +856,14 @@ fn fold_ty(&ctxt cx, fold_mode fld, t ty_0) -> t {
// Type utilities
fn rename(&ctxt cx, t typ, str new_cname) -> t {
ret gen_ty_full(cx, struct(cx, typ), some[str](new_cname));
}
fn strip_cname(&ctxt cx, t typ) -> t {
ret gen_ty_full(cx, struct(cx, typ), none);
}
// Returns a type with the structural part taken from `struct_ty` and the
// canonical name from `cname_ty`.