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drop the new LUT type as no performance advantage detected

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Jeffrey C. Ollie
2025-09-04 23:15:29 -05:00
parent a7da96faee
commit e024b77ad5
7 changed files with 22 additions and 339 deletions
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39
src/benchmark/IsSymbol.zig
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@@ -10,8 +10,7 @@ const Allocator = std.mem.Allocator;
const Benchmark = @import("Benchmark.zig");
const options = @import("options.zig");
const UTF8Decoder = @import("../terminal/UTF8Decoder.zig");
const symbols1 = @import("../unicode/symbols1.zig");
const symbols2 = @import("../unicode/symbols2.zig");
const symbols = @import("../unicode/symbols.zig");
const log = std.log.scoped(.@"is-symbol-bench");
@@ -37,8 +36,7 @@ pub const Mode = enum {
ziglyph,
/// Ghostty's table-based approach.
table1,
table2,
table,
};
/// Create a new terminal stream handler for the given arguments.
@@ -60,8 +58,7 @@ pub fn benchmark(self: *IsSymbol) Benchmark {
return .init(self, .{
.stepFn = switch (self.opts.mode) {
.ziglyph => stepZiglyph,
.table1 => stepTable1,
.table2 => stepTable1,
.table => stepTable,
},
.setupFn = setup,
.teardownFn = teardown,
@@ -106,13 +103,13 @@ fn stepZiglyph(ptr: *anyopaque) Benchmark.Error!void {
const cp_, const consumed = d.next(c);
assert(consumed);
if (cp_) |cp| {
std.mem.doNotOptimizeAway(symbols1.isSymbol(cp));
std.mem.doNotOptimizeAway(symbols.isSymbol(cp));
}
}
}
}
fn stepTable1(ptr: *anyopaque) Benchmark.Error!void {
fn stepTable(ptr: *anyopaque) Benchmark.Error!void {
const self: *IsSymbol = @ptrCast(@alignCast(ptr));
const f = self.data_f orelse return;
@@ -130,31 +127,7 @@ fn stepTable1(ptr: *anyopaque) Benchmark.Error!void {
const cp_, const consumed = d.next(c);
assert(consumed);
if (cp_) |cp| {
std.mem.doNotOptimizeAway(symbols1.table.get(cp));
}
}
}
}
fn stepTable2(ptr: *anyopaque) Benchmark.Error!void {
const self: *IsSymbol = @ptrCast(@alignCast(ptr));
const f = self.data_f orelse return;
var r = std.io.bufferedReader(f.reader());
var d: UTF8Decoder = .{};
var buf: [4096]u8 = undefined;
while (true) {
const n = r.read(&buf) catch |err| {
log.warn("error reading data file err={}", .{err});
return error.BenchmarkFailed;
};
if (n == 0) break; // EOF reached
for (buf[0..n]) |c| {
const cp_, const consumed = d.next(c);
assert(consumed);
if (cp_) |cp| {
std.mem.doNotOptimizeAway(symbols2.table.get(cp));
std.mem.doNotOptimizeAway(symbols.table.get(cp));
}
}
}