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Sema: support pointer subtraction

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This commit is contained in:
Wooster
2024-07-16 03:18:38 +09:00
committed by GitHub
parent 89942ebd03
commit 888708ec8a
7 changed files with 230 additions and 46 deletions
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34
src/InternPool.zig
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@@ -1931,6 +1931,23 @@ pub const Key = union(enum) {
/// the original pointer type alignment must be used.
orig_ty: Index,
};
pub fn eql(a: BaseAddr, b: BaseAddr) bool {
if (@as(Key.Ptr.BaseAddr.Tag, a) != @as(Key.Ptr.BaseAddr.Tag, b)) return false;
return switch (a) {
.decl => |a_decl| a_decl == b.decl,
.comptime_alloc => |a_alloc| a_alloc == b.comptime_alloc,
.anon_decl => |ad| ad.val == b.anon_decl.val and
ad.orig_ty == b.anon_decl.orig_ty,
.int => true,
.eu_payload => |a_eu_payload| a_eu_payload == b.eu_payload,
.opt_payload => |a_opt_payload| a_opt_payload == b.opt_payload,
.comptime_field => |a_comptime_field| a_comptime_field == b.comptime_field,
.arr_elem => |a_elem| std.meta.eql(a_elem, b.arr_elem),
.field => |a_field| std.meta.eql(a_field, b.field),
};
}
};
};
@@ -2369,21 +2386,8 @@ pub const Key = union(enum) {
const b_info = b.ptr;
if (a_info.ty != b_info.ty) return false;
if (a_info.byte_offset != b_info.byte_offset) return false;
if (@as(Key.Ptr.BaseAddr.Tag, a_info.base_addr) != @as(Key.Ptr.BaseAddr.Tag, b_info.base_addr)) return false;
return switch (a_info.base_addr) {
.decl => |a_decl| a_decl == b_info.base_addr.decl,
.comptime_alloc => |a_alloc| a_alloc == b_info.base_addr.comptime_alloc,
.anon_decl => |ad| ad.val == b_info.base_addr.anon_decl.val and
ad.orig_ty == b_info.base_addr.anon_decl.orig_ty,
.int => true,
.eu_payload => |a_eu_payload| a_eu_payload == b_info.base_addr.eu_payload,
.opt_payload => |a_opt_payload| a_opt_payload == b_info.base_addr.opt_payload,
.comptime_field => |a_comptime_field| a_comptime_field == b_info.base_addr.comptime_field,
.arr_elem => |a_elem| std.meta.eql(a_elem, b_info.base_addr.arr_elem),
.field => |a_field| std.meta.eql(a_field, b_info.base_addr.field),
};
if (!a_info.base_addr.eql(b_info.base_addr)) return false;
return true;
},
.int => |a_info| {