Commit ab3b614a33

@@ -1464,12 +1464,8 @@ pub const Fn = struct {
     /// These never have .generic_poison for the Type
     /// because the Type is needed to pass to `Type.eql` and for inserting comptime arguments
     /// into the inst_map when analyzing the body of a generic function instantiation.
-    /// Instead, the is_anytype knowledge is communicated via `anytype_args`.
+    /// Instead, the is_anytype knowledge is communicated via `isAnytypeParam`.
     comptime_args: ?[*]TypedValue,
-    /// When comptime_args is null, this is undefined. Otherwise, this flags each
-    /// parameter and tells whether it is anytype.
-    /// TODO apply the same enhancement for param_names below to this field.
-    anytype_args: [*]bool,
 
     /// Precomputed hash for monomorphed_funcs.
     /// This is important because it may be accessed when resizing monomorphed_funcs
@@ -1584,6 +1580,21 @@ pub const Fn = struct {
         }
     }
 
+    pub fn isAnytypeParam(func: Fn, mod: *Module, index: u32) bool {
+        const file = mod.declPtr(func.owner_decl).getFileScope();
+
+        const tags = file.zir.instructions.items(.tag);
+
+        const param_body = file.zir.getParamBody(func.zir_body_inst);
+        const param = param_body[index];
+
+        return switch (tags[param]) {
+            .param, .param_comptime => false,
+            .param_anytype, .param_anytype_comptime => true,
+            else => unreachable,
+        };
+    }
+
     pub fn getParamName(func: Fn, mod: *Module, index: u32) [:0]const u8 {
         const file = mod.declPtr(func.owner_decl).getFileScope();
 

@@ -5498,7 +5498,7 @@ const GenericCallAdapter = struct {
             const this_is_comptime = this_arg.val.tag() != .generic_poison;
             const other_is_comptime = other_arg.val.tag() != .generic_poison;
             const this_is_anytype = this_arg.ty.tag() != .generic_poison;
-            const other_is_anytype = other_key.anytype_args[i];
+            const other_is_anytype = other_key.isAnytypeParam(ctx.module, @intCast(u32, i));
 
             if (other_is_anytype != this_is_anytype) return false;
             if (other_is_comptime != this_is_comptime) return false;
@@ -6379,12 +6379,9 @@ fn instantiateGenericCall(
         errdefer new_func.deinit(gpa);
         assert(new_func == new_module_func);
 
-        const anytype_args = try new_decl_arena_allocator.alloc(bool, func_ty_info.param_types.len);
-        new_func.anytype_args = anytype_args.ptr;
         arg_i = 0;
         for (fn_info.param_body) |inst| {
             var is_comptime = false;
-            var is_anytype = false;
             switch (zir_tags[inst]) {
                 .param => {
                     is_comptime = func_ty_info.paramIsComptime(arg_i);
@@ -6393,11 +6390,9 @@ fn instantiateGenericCall(
                     is_comptime = true;
                 },
                 .param_anytype => {
-                    is_anytype = true;
                     is_comptime = func_ty_info.paramIsComptime(arg_i);
                 },
                 .param_anytype_comptime => {
-                    is_anytype = true;
                     is_comptime = true;
                 },
                 else => continue,
@@ -6405,10 +6400,9 @@ fn instantiateGenericCall(
 
             // We populate the Type here regardless because it is needed by
             // `GenericCallAdapter.eql` as well as function body analysis.
-            // Whether it is anytype is communicated by `anytype_args`.
+            // Whether it is anytype is communicated by `isAnytypeParam`.
             const arg = child_sema.inst_map.get(inst).?;
             const copied_arg_ty = try child_sema.typeOf(arg).copy(new_decl_arena_allocator);
-            anytype_args[arg_i] = is_anytype;
 
             if (try sema.typeRequiresComptime(block, .unneeded, copied_arg_ty)) {
                 is_comptime = true;
@@ -7760,7 +7754,6 @@ fn funcCommon(
         .zir_body_inst = func_inst,
         .owner_decl = sema.owner_decl_index,
         .comptime_args = comptime_args,
-        .anytype_args = undefined,
         .hash = hash,
         .lbrace_line = src_locs.lbrace_line,
         .rbrace_line = src_locs.rbrace_line,