From ad106749949cd43154a8bfdf3c5aacb0184e7086 Mon Sep 17 00:00:00 2001
From: Jarred Sumner <jarred@jarredsumner.com>
Date: Mon, 24 Feb 2025 02:39:29 -0800
Subject: [PATCH] More

---
 src/js_lexer.zig         | 13 ++++++++++---
 src/string_immutable.zig | 16 ++++++++++++----
 2 files changed, 22 insertions(+), 7 deletions(-)

diff --git a/src/js_lexer.zig b/src/js_lexer.zig
index 12f245e18f..0f3678a59d 100644
--- a/src/js_lexer.zig
+++ b/src/js_lexer.zig
@@ -1251,7 +1251,7 @@ fn NewLexer_(
                         }
                     },
 
-                    .open_paren,
+                    inline .open_paren,
                     .close_paren,
                     .open_bracket,
                     .close_bracket,
@@ -1267,7 +1267,7 @@ fn NewLexer_(
                         lexer.token = @enumFromInt(@intFromEnum(token));
 
                         if (comptime is_json) {
-                            switch (token) {
+                            switch (comptime token) {
                                 .semicolon => {
                                     @branchHint(.unlikely);
                                     return lexer.addUnsupportedSyntaxError("Semicolons are not allowed in JSON");
@@ -1484,7 +1484,14 @@ fn NewLexer_(
                                         -1 => {
                                             break :singleLineComment;
                                         },
-                                        else => {},
+                                        else => {
+                                            if (comptime Environment.enableSIMD) {
+                                                if (strings.indexOfNewlineOrNonASCIICheckStart(lexer.source.contents[lexer.current..], 0, false)) |i| {
+                                                    lexer.current += i;
+                                                    continue :singleLineComment;
+                                                }
+                                            }
+                                        },
                                     }
                                 }
 
diff --git a/src/string_immutable.zig b/src/string_immutable.zig
index 2613d5c5df..cc2491a2fb 100644
--- a/src/string_immutable.zig
+++ b/src/string_immutable.zig
@@ -4195,7 +4195,9 @@ pub fn firstNonASCIIWithType(comptime Type: type, slice: Type) ?u32 {
         }
     }
 
-    if (comptime Environment.allow_assert) assert(remaining.len < 8);
+    // This is a compiler optimization!
+    // Force clang to not auto-vectorize the loop below.
+    bun.unsafeAssert(remaining.len < 8);
 
     for (remaining) |*char| {
         if (char.* > 127) {
@@ -4232,7 +4234,9 @@ pub fn indexOfNewlineOrNonASCIIOrANSI(slice_: []const u8, offset: u32) ?u32 {
             remaining = remaining[ascii_vector_size..];
         }
 
-        if (comptime Environment.allow_assert) assert(remaining.len < ascii_vector_size);
+        // This is a compiler optimization!
+        // Force clang to not auto-vectorize the loop below.
+        bun.unsafeAssert(remaining.len < ascii_vector_size);
     }
 
     for (remaining) |*char_| {
@@ -4280,7 +4284,9 @@ pub fn indexOfNewlineOrNonASCIICheckStart(slice_: []const u8, offset: u32, compt
             remaining = remaining[ascii_vector_size..];
         }
 
-        if (comptime Environment.allow_assert) assert(remaining.len < ascii_vector_size);
+        // This is a compiler optimization!
+        // Force clang to not auto-vectorize the loop below.
+        bun.unsafeAssert(remaining.len < ascii_vector_size);
     }
 
     for (remaining) |*char_| {
@@ -4315,7 +4321,9 @@ pub fn containsNewlineOrNonASCIIOrQuote(slice_: []const u8) bool {
             remaining = remaining[ascii_vector_size..];
         }
 
-        if (comptime Environment.allow_assert) assert(remaining.len < ascii_vector_size);
+        // This is a compiler optimization!
+        // Force clang to not auto-vectorize the loop below.
+        bun.unsafeAssert(remaining.len < ascii_vector_size);
     }
 
     for (remaining) |*char_| {