andrewrk

Building a debug build of Zig:

zig build -Dskip-install-lib-files

Measurements taken on:

• Intel(R) Core(TM) i9-9980HK CPU @ 2.40GHz
• 0.10.0-dev.2381+39ebfedd2

stage1

andrewrk

[nix-shell:~/Downloads/zig/build]$ ./zig fmt --ast-check ../src/ ../lib/std/
as_node: 571082
dbg_stmt: 325704
int: 266542
extended: 212003
param_type: 185337
int_big: 177048
call: 138602
field_call_bind: 105334
decl_val: 99774

andrewrk

map: std.AutoHashMapUnmanaged(void, void),
items: std.MultiArrayList(Item),
extra: std.ArrayListUnmanaged(u32),
strings: std.ArrayListUnmanaged(u8),

const InternArena = @This();
const std = @import("std");
const Allocator = std.mem.Allocator;

const KeyAdapter = struct {

andrewrk

export fn entry() bool {
    doTheTest() catch return false;
    return true;
}

fn doTheTest() !void {
    var x1: u8 = 42;
    const t1 = .{ x1, 56, 54 };
    var arr1: [3]u8 = t1;
    _ = arr1[0];

andrewrk

[14:41:12] <waddlesplash> Zig seems cool but you don't seem to be about the RAII that we love so much :-p
[14:47:25] <andrewrk> anyway I won't come in here trying to convince anyone to switch languages or coding styles :)
[14:47:44] <waddlesplash> in Haiku ... C++ virtual inheritance and RAII objects mean that the code can much more clearly communicate what it is trying to do at the same time it is actually doing it
[14:48:02] <andrewrk> I do think that there is a misunderstanding that we don't care about RAII principles in zig though. I mean yeah you have to manually `defer cleanup();` but the coding model is the same
[14:48:15] <waddlesplash> but what happens if you decide you don't want to clean something up?
[14:48:21] <waddlesplash> for instance we have a very common paradigm in Haiku:
[14:49:35] <waddlesplash> thing* whatever = allocate_memory_or_something();
[14:49:35] <waddlesplash> MemoryDeleter<thing> whateverDeleter(whatever);
[14:49:36] <waddlesplash> if (error) return error; /* whatever is delete

andrewrk

I have an object file created by LLVM:

$ readelf -s test.o

Symbol table '.symtab' contains 8 entries:
   Num:    Value          Size Type    Bind   Vis      Ndx Name
     0: 0000000000000000     0 NOTYPE  LOCAL  DEFAULT  UND 
     1: 0000000000000000     0 FILE    LOCAL  DEFAULT  ABS test
     2: 0000000000000010    22 FUNC    LOCAL  DEFAULT    2 start.callMain2

andrewrk

const std = @import("std");
const expect = std.testing.expect;

test "example" {
    var x: usize = 0;
    x += checkSize(i32);
    x += checkSize(bool);
    try expect(x == 5);
}

andrewrk

const std = @import("std");
const mem = std.mem;

const Foo = struct {
    string_bytes: std.ArrayListUnmanaged(u8),
    /// Key is string_bytes index.
    string_table: std.HashMapUnmanaged(u32, void, IndexContext, std.hash_map.default_max_load_percentage),
};

const IndexContext = struct {

andrewrk

[nix-shell:~/Downloads/zig/build-release]$ ./zig build-exe test.zig -OReleaseFast

[nix-shell:~/Downloads/zig/build-release]$ ls -hl ../lib/std/special/compiler_rt/udivmod{t,d}i4_test.zig test.zig
-rw-r--r-- 1 andy users 1.9M May 10 21:29 ../lib/std/special/compiler_rt/udivmoddi4_test.zig
-rw-r--r-- 1 andy users 9.8M May 10 21:29 ../lib/std/special/compiler_rt/udivmodti4_test.zig
-rw-r--r-- 1 andy users 1.2K Jul  3 16:46 test.zig

[nix-shell:~/Downloads/zig/build-release]$ ./test test.zig
tokenizer:         25 MiB/s

andrewrk

    if (instruction->operand != nullptr &&
        instruction->operand->value->type->id != ZigTypeIdErrorSet &&
        instruction->operand->value->type->id != ZigTypeIdErrorUnion)
    {
        // Reset error return trace index.
        bool is_llvm_alloca = false;
        LLVMValueRef err_ret_trace_ptr = get_cur_err_ret_trace_val(g, instruction->base.base.scope, &is_llvm_alloca);
        if (err_ret_trace_ptr != nullptr) {
            size_t index_field_index = g->stack_trace_type->data.structure.fields[0]->gen_index;
            LLVMValueRef index_field_ptr = LLVMBuildStructGEP(g->builder, err_ret_trace_ptr, (unsigned)index_field_index, "");