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| author | Jacob Young <jacobly0@users.noreply.github.com> | 2025-05-21 12:15:03 -0400 |
|---|---|---|
| committer | Jacob Young <jacobly0@users.noreply.github.com> | 2025-05-28 15:10:22 -0400 |
| commit | 1f6f8b0ffe33696ce980955cceacd98171d7ea0c (patch) | |
| tree | dc720d4fc02e891cb3cd53dc50d174010521eabb /lib/std/http/HeadParser.zig | |
| parent | d69f4c48fc6694293573aec6e370d429877a4c7d (diff) | |
| download | zig-1f6f8b0ffe33696ce980955cceacd98171d7ea0c.tar.gz zig-1f6f8b0ffe33696ce980955cceacd98171d7ea0c.zip | |
x86_64: implement integer `@reduce(.Add)`
Diffstat (limited to 'lib/std/http/HeadParser.zig')
| -rw-r--r-- | lib/std/http/HeadParser.zig | 35 |
1 files changed, 14 insertions, 21 deletions
diff --git a/lib/std/http/HeadParser.zig b/lib/std/http/HeadParser.zig index bb49faa14b..7b9ca6d2c5 100644 --- a/lib/std/http/HeadParser.zig +++ b/lib/std/http/HeadParser.zig @@ -109,27 +109,21 @@ pub fn feed(p: *HeadParser, bytes: []const u8) usize { continue; }, else => { + const Vector = @Vector(vector_len, u8); + // const BoolVector = @Vector(vector_len, bool); + const BitVector = @Vector(vector_len, u1); + const SizeVector = @Vector(vector_len, u8); + const chunk = bytes[index..][0..vector_len]; - const matches = if (use_vectors) matches: { - const Vector = @Vector(vector_len, u8); - // const BoolVector = @Vector(vector_len, bool); - const BitVector = @Vector(vector_len, u1); - const SizeVector = @Vector(vector_len, u8); - - const v: Vector = chunk.*; - const matches_r: BitVector = @bitCast(v == @as(Vector, @splat('\r'))); - const matches_n: BitVector = @bitCast(v == @as(Vector, @splat('\n'))); - const matches_or: SizeVector = matches_r | matches_n; - - break :matches @reduce(.Add, matches_or); - } else matches: { - var matches: u8 = 0; - for (chunk) |byte| switch (byte) { - '\r', '\n' => matches += 1, - else => {}, - }; - break :matches matches; - }; + const v: Vector = chunk.*; + // depends on https://github.com/ziglang/zig/issues/19755 + // const matches_r: BitVector = @bitCast(v == @as(Vector, @splat('\r'))); + // const matches_n: BitVector = @bitCast(v == @as(Vector, @splat('\n'))); + const matches_r: BitVector = @select(u1, v == @as(Vector, @splat('\r')), @as(Vector, @splat(1)), @as(Vector, @splat(0))); + const matches_n: BitVector = @select(u1, v == @as(Vector, @splat('\n')), @as(Vector, @splat(1)), @as(Vector, @splat(0))); + const matches_or: SizeVector = matches_r | matches_n; + + const matches = @reduce(.Add, matches_or); switch (matches) { 0 => {}, 1 => switch (chunk[vector_len - 1]) { @@ -357,7 +351,6 @@ inline fn intShift(comptime T: type, x: anytype) T { const HeadParser = @This(); const std = @import("std"); -const use_vectors = builtin.zig_backend != .stage2_x86_64; const builtin = @import("builtin"); test feed { |