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Add two more resolution status' to Struct and Union

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resolveTypeForCodegen is called when we needed to resolve a type fully,
even through pointer. This commit fully implements this, even through
pointer fields on structs and unions.

The function has now also been renamed to resolveTypeFully
This commit is contained in:
Jimmi Holst Christensen
2022-01-07 18:58:40 +01:00
parent d5093b6c13
commit 9d6bef49a5
3 changed files with 116 additions and 19 deletions
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42
src/Module.zig
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@@ -831,6 +831,10 @@ pub const Struct = struct {
have_field_types,
layout_wip,
have_layout,
fully_resolved_wip,
// The types and all its fields have had their layout resolved. Even through pointer,
// which `have_layout` does not ensure.
fully_resolved,
},
/// If true, definitely nonzero size at runtime. If false, resolving the fields
/// is necessary to determine whether it has bits at runtime.
@@ -889,6 +893,22 @@ pub const Struct = struct {
.have_field_types,
.layout_wip,
.have_layout,
.fully_resolved_wip,
.fully_resolved,
=> true,
};
}
pub fn haveLayout(s: Struct) bool {
return switch (s.status) {
.none,
.field_types_wip,
.have_field_types,
.layout_wip,
=> false,
.have_layout,
.fully_resolved_wip,
.fully_resolved,
=> true,
};
}
@@ -1003,6 +1023,10 @@ pub const Union = struct {
have_field_types,
layout_wip,
have_layout,
fully_resolved_wip,
// The types and all its fields have had their layout resolved. Even through pointer,
// which `have_layout` does not ensure.
fully_resolved,
},
pub const Field = struct {
@@ -1033,6 +1057,8 @@ pub const Union = struct {
.have_field_types,
.layout_wip,
.have_layout,
.fully_resolved_wip,
.fully_resolved,
=> true,
};
}
@@ -1102,8 +1128,22 @@ pub const Union = struct {
tag_size: u64,
};
pub fn haveLayout(u: Union) bool {
return switch (u.status) {
.none,
.field_types_wip,
.have_field_types,
.layout_wip,
=> false,
.have_layout,
.fully_resolved_wip,
.fully_resolved,
=> true,
};
}
pub fn getLayout(u: Union, target: Target, have_tag: bool) Layout {
assert(u.status == .have_layout);
assert(u.haveLayout());
var most_aligned_field: u32 = undefined;
var most_aligned_field_size: u64 = undefined;
var biggest_field: u32 = undefined;