simd: minor tweaks

src/bench/codepoint-width.sh

@@ -23,8 +23,8 @@ ARGS=""
 
 hyperfine \
   --warmup 10 \
-  -n baseline \
-  "./zig-out/bin/bench-codepoint-width --mode=baseline${ARGS} </tmp/ghostty_bench_data" \
+  -n noop \
+  "./zig-out/bin/bench-codepoint-width --mode=noop${ARGS} </tmp/ghostty_bench_data" \
   -n wcwidth \
   "./zig-out/bin/bench-codepoint-width --mode=wcwidth${ARGS} </tmp/ghostty_bench_data" \
   -n ziglyph \

src/bench/codepoint-width.zig

@@ -20,7 +20,7 @@ const simd = @import("../simd/main.zig");
 const UTF8Decoder = @import("../terminal/UTF8Decoder.zig");
 
 const Args = struct {
-    mode: Mode = .baseline,
+    mode: Mode = .noop,
 
     /// The size for read buffers. Doesn't usually need to be changed. The
     /// main point is to make this runtime known so we can avoid compiler
@@ -40,7 +40,7 @@ const Mode = enum {
     /// The baseline mode copies the data from the fd into a buffer. This
     /// is used to show the minimal overhead of reading the fd into memory
     /// and establishes a baseline for the other modes.
-    baseline,
+    noop,
 
     /// libc wcwidth
     wcwidth,
@@ -74,14 +74,14 @@ pub fn main() !void {
 
     // Handle the modes that do not depend on terminal state first.
     switch (args.mode) {
-        .baseline => try benchBaseline(reader, buf),
+        .noop => try benchNoop(reader, buf),
         .wcwidth => try benchWcwidth(reader, buf),
         .ziglyph => try benchZiglyph(reader, buf),
         .simd => try benchSimd(reader, buf),
     }
 }
 
-noinline fn benchBaseline(
+noinline fn benchNoop(
     reader: anytype,
     buf: []u8,
 ) !void {

src/simd/codepoint_width.cpp

@@ -211,11 +211,11 @@ int8_t CodepointWidthImpl(D d, T input) {
     //
     // NOTE: 0x2E3B is technically width 3 but for our terminal we only
     // handle up to width 2 as wide so we will treat it as width 2.
-    HWY_ALIGN T gte_keys[] = {
+    HWY_ALIGN constexpr T gte_keys[] = {
         0x2E3A, 0x1f1e6, 0x3400, 0x4E00, 0xF900, 0x20000, 0x30000, 0x2E3B,
         0,      0,       0,      0,      0,      0,       0,       0,
     };
-    HWY_ALIGN T lte_keys[] = {
+    HWY_ALIGN constexpr T lte_keys[] = {
         0x2E3A, 0x1f1ff, 0x4DBF, 0x9FFF, 0xFAFF, 0x2FFFD, 0x3FFFD, 0x2E3B,
         0,      0,       0,      0,      0,      0,       0,       0,
     };
@@ -234,10 +234,10 @@ int8_t CodepointWidthImpl(D d, T input) {
 
   {
     // Definitely width 0
-    HWY_ALIGN T gte_keys[] = {
+    HWY_ALIGN constexpr T gte_keys[] = {
         0x1160, 0x2060, 0xFFF0, 0xE0000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     };
-    HWY_ALIGN T lte_keys[] = {
+    HWY_ALIGN constexpr T lte_keys[] = {
         0x11FF, 0x206F, 0xFFF8, 0xE0FFF, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     };
     size_t i = 0;