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Target: pass and use locals by pointer instead of by value

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This struct is larger than 256 bytes and code that copies it
consistently shows up in profiles of the compiler.
This commit is contained in:
Jacob Young
2025-06-13 04:46:30 -04:00
parent 16d78bc0c0
commit 917640810e
96 changed files with 400 additions and 401 deletions
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22
src/codegen.zig
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@@ -65,7 +65,7 @@ fn importBackend(comptime backend: std.builtin.CompilerBackend) type {
pub fn legalizeFeatures(pt: Zcu.PerThread, nav_index: InternPool.Nav.Index) ?*const Air.Legalize.Features {
const zcu = pt.zcu;
const target = &zcu.navFileScope(nav_index).mod.?.resolved_target.result;
switch (target_util.zigBackend(target.*, zcu.comp.config.use_llvm)) {
switch (target_util.zigBackend(target, zcu.comp.config.use_llvm)) {
else => unreachable,
inline .stage2_llvm,
.stage2_c,
@@ -114,7 +114,7 @@ pub const AnyMir = union {
pub fn deinit(mir: *AnyMir, zcu: *const Zcu) void {
const gpa = zcu.gpa;
const backend = target_util.zigBackend(zcu.root_mod.resolved_target.result, zcu.comp.config.use_llvm);
const backend = target_util.zigBackend(&zcu.root_mod.resolved_target.result, zcu.comp.config.use_llvm);
switch (backend) {
else => unreachable,
inline .stage2_aarch64,
@@ -145,7 +145,7 @@ pub fn generateFunction(
) CodeGenError!AnyMir {
const zcu = pt.zcu;
const func = zcu.funcInfo(func_index);
const target = zcu.navFileScope(func.owner_nav).mod.?.resolved_target.result;
const target = &zcu.navFileScope(func.owner_nav).mod.?.resolved_target.result;
switch (target_util.zigBackend(target, false)) {
else => unreachable,
inline .stage2_aarch64,
@@ -183,7 +183,7 @@ pub fn emitFunction(
) CodeGenError!void {
const zcu = pt.zcu;
const func = zcu.funcInfo(func_index);
const target = zcu.navFileScope(func.owner_nav).mod.?.resolved_target.result;
const target = &zcu.navFileScope(func.owner_nav).mod.?.resolved_target.result;
switch (target_util.zigBackend(target, zcu.comp.config.use_llvm)) {
else => unreachable,
inline .stage2_aarch64,
@@ -210,7 +210,7 @@ pub fn generateLazyFunction(
) CodeGenError!void {
const zcu = pt.zcu;
const target = if (Type.fromInterned(lazy_sym.ty).typeDeclInstAllowGeneratedTag(zcu)) |inst_index|
zcu.fileByIndex(inst_index.resolveFile(&zcu.intern_pool)).mod.?.resolved_target.result
&zcu.fileByIndex(inst_index.resolveFile(&zcu.intern_pool)).mod.?.resolved_target.result
else
zcu.getTarget();
switch (target_util.zigBackend(target, zcu.comp.config.use_llvm)) {
@@ -225,7 +225,7 @@ pub fn generateLazyFunction(
}
}
fn writeFloat(comptime F: type, f: F, target: std.Target, endian: std.builtin.Endian, code: []u8) void {
fn writeFloat(comptime F: type, f: F, target: *const std.Target, endian: std.builtin.Endian, code: []u8) void {
_ = target;
const bits = @typeInfo(F).float.bits;
const Int = @Type(.{ .int = .{ .signedness = .unsigned, .bits = bits } });
@@ -253,7 +253,7 @@ pub fn generateLazySymbol(
const gpa = comp.gpa;
const zcu = pt.zcu;
const ip = &zcu.intern_pool;
const target = comp.root_mod.resolved_target.result;
const target = &comp.root_mod.resolved_target.result;
const endian = target.cpu.arch.endian();
log.debug("generateLazySymbol: kind = {s}, ty = {}", .{
@@ -839,7 +839,7 @@ fn lowerNavRef(
const zcu = pt.zcu;
const gpa = zcu.gpa;
const ip = &zcu.intern_pool;
const target = zcu.navFileScope(nav_index).mod.?.resolved_target.result;
const target = &zcu.navFileScope(nav_index).mod.?.resolved_target.result;
const ptr_width_bytes = @divExact(target.ptrBitWidth(), 8);
const is_obj = lf.comp.config.output_mode == .Obj;
const nav_ty = Type.fromInterned(ip.getNav(nav_index).typeOf(ip));
@@ -956,7 +956,7 @@ pub fn genNavRef(
pt: Zcu.PerThread,
src_loc: Zcu.LazySrcLoc,
nav_index: InternPool.Nav.Index,
target: std.Target,
target: *const std.Target,
) CodeGenError!GenResult {
const zcu = pt.zcu;
const ip = &zcu.intern_pool;
@@ -1040,9 +1040,9 @@ pub fn genTypedValue(
pt: Zcu.PerThread,
src_loc: Zcu.LazySrcLoc,
val: Value,
target: std.Target,
target: *const std.Target,
) CodeGenError!GenResult {
return switch (try lowerValue(pt, val, &target)) {
return switch (try lowerValue(pt, val, target)) {
.none => .{ .mcv = .none },
.undef => .{ .mcv = .undef },
.immediate => |imm| .{ .mcv = .{ .immediate = imm } },