Chris Tate a88fdacbe2 Iterate strings over their bytes ...

for-of, spread, Array.from, yield* and [Symbol.iterator]() over a string
walked a UTF-16 index. Each step mapped the index to a byte offset, built
the character, and measured its UTF-16 length to advance.

They now walk a byte cursor over the WTF-8 data:
- The cpAtByte intrinsic reads the character that starts at the cursor.
  ASCII bytes take the one-character table inline; other characters call
  scr_str_cp_at_byte. byteLength advances the cursor by the character's
  byte count. A lone surrogate is its own three-byte character, so it
  stays a one-unit character, as in Node.
- Spread and Array.from of a string call scr_str_code_points, which
  counts the characters, allocates the array once and fills it.
- The one-character strings of U+0080..U+07FF are made immortal on first
  use and shared, as the ASCII ones are static.

The cpAt intrinsic, which no lowering emits any more, is removed.

2026-10-25 13:00:18 -05:00

..

builds

Make native installs portable and smaller (#599)

2026-10-01 10:46:16 -05:00

regions

Carry lifetime regions across await and reuse freed region chunks

2026-10-17 11:26:12 -07:00

runtime

Iterate strings over their bytes

2026-10-25 13:00:18 -05:00

scaling

Keep each runtime benchmark workload in its own file

2026-10-20 18:08:10 -05:00