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Pass linearized typarams to make_generic_glue. Steps toward derived tydescs.

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This commit is contained in:
Graydon Hoare 2011-01-28 15:28:20 -08:00
parent ea42911561
commit caa5b92985
1 changed files with 22 additions and 5 deletions
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27
src/comp/middle/trans.rs
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@ -949,23 +949,30 @@ fn get_tydesc(&@block_ctxt cx, @ty.t t) -> ValueRef {
// Does it contain a type param? If so, generate a derived tydesc.
let uint n_params = ty.count_ty_params(t);
if (ty.count_ty_params(t) > 0u) {
auto tys = linearize_ty_params(cx, t);
if (!cx.fcx.ccx.tydescs.contains_key(t)) {
make_tydesc(cx.fcx.ccx, t, tys._0);
}
cx.fcx.ccx.sess.unimpl("derived type descriptors");
}
// Otherwise, generate a tydesc if necessary, and return it.
if (!cx.fcx.ccx.tydescs.contains_key(t)) {
make_tydesc(cx.fcx.ccx, t);
let vec[ast.def_id] defs = vec();
make_tydesc(cx.fcx.ccx, t, defs);
}
ret cx.fcx.ccx.tydescs.get(t);
}
fn make_tydesc(@crate_ctxt cx, @ty.t t) {
fn make_tydesc(@crate_ctxt cx, @ty.t t, vec[ast.def_id] typaram_defs) {
auto tg = make_take_glue;
auto take_glue = make_generic_glue(cx, t, "take", tg);
auto take_glue = make_generic_glue(cx, t, "take", tg, typaram_defs);
auto dg = make_drop_glue;
auto drop_glue = make_generic_glue(cx, t, "drop", dg);
auto drop_glue = make_generic_glue(cx, t, "drop", dg, typaram_defs);
auto llty = type_of(cx, t);
auto pvoid = T_ptr(T_i8());
@ -993,7 +1000,8 @@ fn make_tydesc(@crate_ctxt cx, @ty.t t) {
}
fn make_generic_glue(@crate_ctxt cx, @ty.t t, str name,
val_and_ty_fn helper) -> ValueRef {
val_and_ty_fn helper,
vec[ast.def_id] typaram_defs) -> ValueRef {
auto llfnty = T_fn(vec(T_taskptr(),
T_ptr(T_tydesc()),
T_ptr(T_i8())), T_void());
@ -1014,6 +1022,15 @@ fn make_generic_glue(@crate_ctxt cx, @ty.t t, str name,
llty = type_of(cx, t);
}
auto lltyparams = llvm.LLVMGetParam(llfn, 1u);
auto p = 0;
for (ast.def_id d in typaram_defs) {
auto llparam = bcx.build.GEP(lltyparams, vec(C_int(p)));
llparam = bcx.build.Load(llparam);
bcx.fcx.lltydescs.insert(d, llparam);
p += 1;
}
auto llrawptr = llvm.LLVMGetParam(llfn, 2u);
auto llval = bcx.build.BitCast(llrawptr, llty);