LLVM: Move pt field from Object to NavGen

* LLVM: Pass correct tid to emit
* Store stack trace type in Zcu
* Don't use pt.errorIntType in LLVM backend

Author: antlilja

src/Compilation.zig

@@ -3042,7 +3042,7 @@ fn flush(
             // If there's an output file, it wants to decide where the LLVM object goes!
             const sub_prog_node = comp.link_prog_node.start("LLVM Emit Object", 0);
             defer sub_prog_node.end();
-            try llvm_object.emit(.{
+            try llvm_object.emit(.{ .zcu = zcu, .tid = tid }, .{
                 .pre_ir_path = comp.verbose_llvm_ir,
                 .pre_bc_path = comp.verbose_llvm_bc,
 

src/Sema.zig

@@ -9916,6 +9916,8 @@ fn finishFunc(
         // lower this fn type.
         const unresolved_stack_trace_ty = try sema.getBuiltinType(block.nodeOffset(.zero), .StackTrace);
         try unresolved_stack_trace_ty.resolveFields(pt);
+
+        if (zcu.stack_trace_type == .none) zcu.stack_trace_type = unresolved_stack_trace_ty.toIntern();
     }
 
     return Air.internedToRef(if (opt_func_index != .none) opt_func_index else func_ty);

src/Zcu.zig

@@ -308,6 +308,7 @@ free_type_references: std.ArrayListUnmanaged(u32) = .empty,
 
 /// Populated by analysis of `AnalUnit.wrap(.{ .memoized_state = s })`, where `s` depends on the element.
 builtin_decl_values: BuiltinDecl.Memoized = .initFill(.none),
+stack_trace_type: InternPool.Index = .none,
 
 incremental_debug_state: if (build_options.enable_debug_extensions) IncrementalDebugState else void =
     if (build_options.enable_debug_extensions) .init else {},