Merge pull request #19102 from ziglang/decouple-zir

JIT `zig fmt` and `zig reduce`

CMakeLists.txt

@@ -505,6 +505,7 @@ set(ZIG_STAGE2_SOURCES
     "${CMAKE_SOURCE_DIR}/lib/std/unicode.zig"
     "${CMAKE_SOURCE_DIR}/lib/std/zig.zig"
     "${CMAKE_SOURCE_DIR}/lib/std/zig/Ast.zig"
+    "${CMAKE_SOURCE_DIR}/lib/std/zig/AstGen.zig"
     "${CMAKE_SOURCE_DIR}/lib/std/zig/AstRlAnnotate.zig"
     "${CMAKE_SOURCE_DIR}/lib/std/zig/c_builtins.zig"
     "${CMAKE_SOURCE_DIR}/lib/std/zig/Parse.zig"
@@ -515,8 +516,8 @@ set(ZIG_STAGE2_SOURCES
     "${CMAKE_SOURCE_DIR}/lib/std/zig/system/NativePaths.zig"
     "${CMAKE_SOURCE_DIR}/lib/std/zig/system/x86.zig"
     "${CMAKE_SOURCE_DIR}/lib/std/zig/tokenizer.zig"
+    "${CMAKE_SOURCE_DIR}/lib/std/zig/Zir.zig"
     "${CMAKE_SOURCE_DIR}/src/Air.zig"
-    "${CMAKE_SOURCE_DIR}/src/AstGen.zig"
     "${CMAKE_SOURCE_DIR}/src/Compilation.zig"
     "${CMAKE_SOURCE_DIR}/src/Compilation/Config.zig"
     "${CMAKE_SOURCE_DIR}/src/Liveness.zig"
@@ -527,7 +528,6 @@ set(ZIG_STAGE2_SOURCES
     "${CMAKE_SOURCE_DIR}/src/Sema.zig"
     "${CMAKE_SOURCE_DIR}/src/TypedValue.zig"
     "${CMAKE_SOURCE_DIR}/src/Value.zig"
-    "${CMAKE_SOURCE_DIR}/src/Zir.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/aarch64/CodeGen.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/aarch64/Emit.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/aarch64/Mir.zig"

build.zig

@@ -34,7 +34,6 @@ pub fn build(b: *std.Build) !void {
     const skip_install_langref = b.option(bool, "no-langref", "skip copying of langref to the installation prefix") orelse skip_install_lib_files;
     const skip_install_autodocs = b.option(bool, "no-autodocs", "skip copying of standard library autodocs to the installation prefix") orelse skip_install_lib_files;
     const no_bin = b.option(bool, "no-bin", "skip emitting compiler binary") orelse false;
-    const only_reduce = b.option(bool, "only-reduce", "only build zig reduce") orelse false;
 
     const docgen_exe = b.addExecutable(.{
         .name = "docgen",
@@ -245,7 +244,6 @@ pub fn build(b: *std.Build) !void {
     exe_options.addOption(bool, "force_gpa", force_gpa);
     exe_options.addOption(bool, "only_c", only_c);
     exe_options.addOption(bool, "only_core_functionality", only_c);
-    exe_options.addOption(bool, "only_reduce", only_reduce);
 
     if (link_libc) {
         exe.linkLibC();
@@ -407,7 +405,6 @@ pub fn build(b: *std.Build) !void {
     test_cases_options.addOption(bool, "force_gpa", force_gpa);
     test_cases_options.addOption(bool, "only_c", only_c);
     test_cases_options.addOption(bool, "only_core_functionality", true);
-    test_cases_options.addOption(bool, "only_reduce", false);
     test_cases_options.addOption(bool, "enable_qemu", b.enable_qemu);
     test_cases_options.addOption(bool, "enable_wine", b.enable_wine);
     test_cases_options.addOption(bool, "enable_wasmtime", b.enable_wasmtime);
@@ -599,7 +596,6 @@ fn addWasiUpdateStep(b: *std.Build, version: [:0]const u8) !void {
     exe_options.addOption(bool, "enable_tracy_allocation", false);
     exe_options.addOption(bool, "value_tracing", false);
     exe_options.addOption(bool, "only_core_functionality", true);
-    exe_options.addOption(bool, "only_reduce", false);
 
     const run_opt = b.addSystemCommand(&.{
         "wasm-opt",

lib/build_runner.zig

@@ -13,7 +13,7 @@ const Step = std.Build.Step;
 pub const dependencies = @import("@dependencies");
 
 pub fn main() !void {
-    // Here we use an ArenaAllocator backed by a DirectAllocator because a build is a short-lived,
+    // Here we use an ArenaAllocator backed by a page allocator because a build is a short-lived,
     // one shot program. We don't need to waste time freeing memory and finding places to squish
     // bytes into. So we free everything all at once at the very end.
     var single_threaded_arena = std.heap.ArenaAllocator.init(std.heap.page_allocator);