Merge pull request #19437 from mlugg/value-cleanups

Follow-up to #19414

Author: andrewrk

CMakeLists.txt

@@ -526,7 +526,6 @@ set(ZIG_STAGE2_SOURCES
     "${CMAKE_SOURCE_DIR}/src/Package/Fetch.zig"
     "${CMAKE_SOURCE_DIR}/src/RangeSet.zig"
     "${CMAKE_SOURCE_DIR}/src/Sema.zig"
-    "${CMAKE_SOURCE_DIR}/src/TypedValue.zig"
     "${CMAKE_SOURCE_DIR}/src/Value.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/aarch64/CodeGen.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/aarch64/Emit.zig"
@@ -634,9 +633,11 @@ set(ZIG_STAGE2_SOURCES
     "${CMAKE_SOURCE_DIR}/src/main.zig"
     "${CMAKE_SOURCE_DIR}/src/mingw.zig"
     "${CMAKE_SOURCE_DIR}/src/musl.zig"
+    "${CMAKE_SOURCE_DIR}/src/mutable_value.zig"
     "${CMAKE_SOURCE_DIR}/src/print_air.zig"
     "${CMAKE_SOURCE_DIR}/src/print_env.zig"
     "${CMAKE_SOURCE_DIR}/src/print_targets.zig"
+    "${CMAKE_SOURCE_DIR}/src/print_value.zig"
     "${CMAKE_SOURCE_DIR}/src/print_zir.zig"
     "${CMAKE_SOURCE_DIR}/src/register_manager.zig"
     "${CMAKE_SOURCE_DIR}/src/target.zig"

src/Compilation.zig

@@ -102,7 +102,6 @@ link_errors: std.ArrayListUnmanaged(link.File.ErrorMsg) = .{},
 lld_errors: std.ArrayListUnmanaged(LldError) = .{},
 
 work_queue: std.fifo.LinearFifo(Job, .Dynamic),
-anon_work_queue: std.fifo.LinearFifo(Job, .Dynamic),
 
 /// These jobs are to invoke the Clang compiler to create an object file, which
 /// gets linked with the Compilation.
@@ -1417,7 +1416,6 @@ pub fn create(gpa: Allocator, arena: Allocator, options: CreateOptions) !*Compil
             .emit_llvm_ir = options.emit_llvm_ir,
             .emit_llvm_bc = options.emit_llvm_bc,
             .work_queue = std.fifo.LinearFifo(Job, .Dynamic).init(gpa),
-            .anon_work_queue = std.fifo.LinearFifo(Job, .Dynamic).init(gpa),
             .c_object_work_queue = std.fifo.LinearFifo(*CObject, .Dynamic).init(gpa),
             .win32_resource_work_queue = if (build_options.only_core_functionality) {} else std.fifo.LinearFifo(*Win32Resource, .Dynamic).init(gpa),
             .astgen_work_queue = std.fifo.LinearFifo(*Module.File, .Dynamic).init(gpa),
@@ -1840,7 +1838,6 @@ pub fn destroy(comp: *Compilation) void {
     if (comp.module) |zcu| zcu.deinit();
     comp.cache_use.deinit();
     comp.work_queue.deinit();
-    comp.anon_work_queue.deinit();
     comp.c_object_work_queue.deinit();
     if (!build_options.only_core_functionality) {
         comp.win32_resource_work_queue.deinit();
@@ -3354,18 +3351,11 @@ pub fn performAllTheWork(
         mod.sema_prog_node = undefined;
     };
 
-    // In this main loop we give priority to non-anonymous Decls in the work queue, so
-    // that they can establish references to anonymous Decls, setting alive=true in the
-    // backend, preventing anonymous Decls from being prematurely destroyed.
     while (true) {
         if (comp.work_queue.readItem()) |work_item| {
             try processOneJob(comp, work_item, main_progress_node);
             continue;
         }
-        if (comp.anon_work_queue.readItem()) |work_item| {
-            try processOneJob(comp, work_item, main_progress_node);
-            continue;
-        }
         if (comp.module) |zcu| {
             // If there's no work queued, check if there's anything outdated
             // which we need to work on, and queue it if so.
@@ -3413,14 +3403,7 @@ fn processOneJob(comp: *Compilation, job: Job, prog_node: *std.Progress.Node) !v
 
                     assert(decl.has_tv);
 
-                    if (decl.alive) {
-                        try module.linkerUpdateDecl(decl_index);
-                        return;
-                    }
-
-                    // Instead of sending this decl to the linker, we actually will delete it
-                    // because we found out that it in fact was never referenced.
-                    module.deleteUnusedDecl(decl_index);
+                    try module.linkerUpdateDecl(decl_index);
                     return;
                 },
             }

src/InternPool.zig

@@ -6581,7 +6581,6 @@ pub fn getFuncInstance(ip: *InternPool, gpa: Allocator, arg: GetFuncInstanceKey)
         generic_owner,
         func_index,
         func_extra_index,
-        func_ty,
         arg.alignment,
         arg.section,
     );
@@ -6711,7 +6710,6 @@ pub fn getFuncInstanceIes(
         generic_owner,
         func_index,
         func_extra_index,
-        func_ty,
         arg.alignment,
         arg.section,
     );
@@ -6723,7 +6721,6 @@ fn finishFuncInstance(
     generic_owner: Index,
     func_index: Index,
     func_extra_index: u32,
-    func_ty: Index,
     alignment: Alignment,
     section: OptionalNullTerminatedString,
 ) Allocator.Error!Index {
@@ -6735,7 +6732,6 @@ fn finishFuncInstance(
         .src_line = fn_owner_decl.src_line,
         .has_tv = true,
         .owns_tv = true,
-        .ty = @import("type.zig").Type.fromInterned(func_ty),
         .val = @import("Value.zig").fromInterned(func_index),
         .alignment = alignment,
         .@"linksection" = section,
@@ -6744,7 +6740,6 @@ fn finishFuncInstance(
         .zir_decl_index = fn_owner_decl.zir_decl_index,
         .is_pub = fn_owner_decl.is_pub,
         .is_exported = fn_owner_decl.is_exported,
-        .alive = true,
         .kind = .anon,
     });
     errdefer ip.destroyDecl(gpa, decl_index);