bjoernager/rust
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treat host effect params as erased generics in codegen

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This fixes the changes brought to codegen tests when effect params are
added to libcore, by not attempting to monomorphize functions that get
the host param by being `const fn`.
This commit is contained in:
Deadbeef 2023-09-13 13:55:23 +00:00
parent 7e0261e7ea
commit a0a801cd38
17 changed files with 71 additions and 41 deletions
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6
compiler/rustc_codegen_ssa/src/back/symbol_export.rs
View file

@ -334,7 +334,7 @@ fn exported_symbols_provider_local(
match *mono_item {
MonoItem::Fn(Instance { def: InstanceDef::Item(def), args }) => {
if args.non_erasable_generics().next().is_some() {
if args.non_erasable_generics(tcx, def).next().is_some() {
let symbol = ExportedSymbol::Generic(def, args);
symbols.push((
symbol,
@ -346,10 +346,10 @@ fn exported_symbols_provider_local(
));
}
}
MonoItem::Fn(Instance { def: InstanceDef::DropGlue(_, Some(ty)), args }) => {
MonoItem::Fn(Instance { def: InstanceDef::DropGlue(def_id, Some(ty)), args }) => {
// A little sanity-check
debug_assert_eq!(
args.non_erasable_generics().next(),
args.non_erasable_generics(tcx, def_id).next(),
Some(GenericArgKind::Type(ty))
);
symbols.push((

36
compiler/rustc_codegen_ssa/src/debuginfo/type_names.rs
View file

@ -106,14 +106,14 @@ fn push_debuginfo_type_name<'tcx>(
ty_and_layout,
&|output, visited| {
push_item_name(tcx, def.did(), true, output);
push_generic_params_internal(tcx, args, output, visited);
push_generic_params_internal(tcx, args, def.did(), output, visited);
},
output,
visited,
);
} else {
push_item_name(tcx, def.did(), qualified, output);
push_generic_params_internal(tcx, args, output, visited);
push_generic_params_internal(tcx, args, def.did(), output, visited);
}
}
ty::Tuple(component_types) => {
@ -237,8 +237,13 @@ fn push_debuginfo_type_name<'tcx>(
let principal =
tcx.normalize_erasing_late_bound_regions(ty::ParamEnv::reveal_all(), principal);
push_item_name(tcx, principal.def_id, qualified, output);
let principal_has_generic_params =
push_generic_params_internal(tcx, principal.args, output, visited);
let principal_has_generic_params = push_generic_params_internal(
tcx,
principal.args,
principal.def_id,
output,
visited,
);
let projection_bounds: SmallVec<[_; 4]> = trait_data
.projection_bounds()
@ -516,7 +521,13 @@ pub fn compute_debuginfo_vtable_name<'tcx>(
tcx.normalize_erasing_late_bound_regions(ty::ParamEnv::reveal_all(), trait_ref);
push_item_name(tcx, trait_ref.def_id, true, &mut vtable_name);
visited.clear();
push_generic_params_internal(tcx, trait_ref.args, &mut vtable_name, &mut visited);
push_generic_params_internal(
tcx,
trait_ref.args,
trait_ref.def_id,
&mut vtable_name,
&mut visited,
);
} else {
vtable_name.push('_');
}
@ -610,20 +621,20 @@ fn push_unqualified_item_name(
fn push_generic_params_internal<'tcx>(
tcx: TyCtxt<'tcx>,
args: GenericArgsRef<'tcx>,
def_id: DefId,
output: &mut String,
visited: &mut FxHashSet<Ty<'tcx>>,
) -> bool {
if args.non_erasable_generics().next().is_none() {
debug_assert_eq!(args, tcx.normalize_erasing_regions(ty::ParamEnv::reveal_all(), args));
let mut args = args.non_erasable_generics(tcx, def_id).peekable();
if args.peek().is_none() {
return false;
}
debug_assert_eq!(args, tcx.normalize_erasing_regions(ty::ParamEnv::reveal_all(), args));
let cpp_like_debuginfo = cpp_like_debuginfo(tcx);
output.push('<');
for type_parameter in args.non_erasable_generics() {
for type_parameter in args {
match type_parameter {
GenericArgKind::Type(type_parameter) => {
push_debuginfo_type_name(tcx, type_parameter, true, output, visited);
@ -691,11 +702,12 @@ fn push_const_param<'tcx>(tcx: TyCtxt<'tcx>, ct: ty::Const<'tcx>, output: &mut S
pub fn push_generic_params<'tcx>(
tcx: TyCtxt<'tcx>,
args: GenericArgsRef<'tcx>,
def_id: DefId,
output: &mut String,
) {
let _prof = tcx.prof.generic_activity("compute_debuginfo_type_name");
let mut visited = FxHashSet::default();
push_generic_params_internal(tcx, args, output, &mut visited);
push_generic_params_internal(tcx, args, def_id, output, &mut visited);
}
fn push_closure_or_generator_name<'tcx>(
@ -738,7 +750,7 @@ fn push_closure_or_generator_name<'tcx>(
// Truncate the args to the length of the above generics. This will cut off
// anything closure- or generator-specific.
let args = args.truncate_to(tcx, generics);
push_generic_params_internal(tcx, args, output, visited);
push_generic_params_internal(tcx, args, enclosing_fn_def_id, output, visited);
}
fn push_close_angle_bracket(cpp_like_debuginfo: bool, output: &mut String) {