Chris Tate 0cf5e87b03 Keep union locals copied between locals in private storage ...

A union local that is copied to another local (`const t = pp[p0]; p0 = t`)
was a whole-value use, so both locals held heap boxes: every number[]
read held in such a local allocated a `%ScrUnion`, and every copy
retained and released it.

Call lifetimes now record statement copies between union locals
(copiedLocals) instead of rejecting the source. Local union storage
takes a copied local when every local it is copied to also has private
storage, so the copy snapshots the tag and bits and the source's box
stays private. Copies in expression position and copies of parameters
keep the heap path.

An element assignment of a `T | undefined` binding with a computed index
holds the index in one temporary ahead of its two stores, so the key
conversion of a union index declares its temporary once.

2026-10-28 01:56:14 -05:00

..

fixtures

Read TypeScript 7.1's binary AST format beside 7.0's

2026-10-26 11:27:36 -05:00

ts7

Keep union locals copied between locals in private storage

2026-10-28 01:56:14 -05:00

array-batch-emission.test.ts

…

array-index-product-emission.test.ts

Index arrays with exact i64 products of int32 values

2026-10-22 13:11:34 -05:00

array-induction-read-emission.test.ts

Shrink the array header to 48 bytes

2026-10-20 00:21:45 -05:00

array-length-range-emission.test.ts

Shrink the array header to 48 bytes

2026-10-20 00:21:45 -05:00

array-own-key-emission.test.ts

…

array-pipeline-fusion.test.ts

Keep the helper for callbacks that read a local class's captures

2026-10-25 04:54:28 -05:00

asserted-arm-probe-emission.test.ts

Answer member presence probes off the value an assertion actually holds

2026-10-27 15:22:07 -07:00

await-call-emission.test.ts

Run native async generators as stackless coroutines

2026-10-26 07:28:50 -05:00

bigint-literal-emission.test.ts

…

blob-boundaries.test.ts

…

buffer-from-dynamic.test.ts

…

byte-loop-emission.test.ts

…

byte-number-emission.test.ts

…

byte-window-emission.test.ts

…

bytes-callback-helpers.test.ts

Call typed-array callbacks directly and visit on an integer counter

2026-10-22 04:44:34 -05:00

bytes-element-emission.test.ts

Give every native function an unwind table entry

2026-10-26 21:49:14 -05:00

bytes-field-borrow-emission.test.ts

Merge main

2026-10-20 17:56:44 -05:00

bytes-header-load-emission.test.ts

Read a typed array's length without an invariant header load

2026-10-25 09:59:43 -05:00

call-lifetimes.test.ts

…

callback-loop-versions.test.ts

Keep callback loop versions from nesting

2026-10-22 09:55:01 -05:00

callback-pending-emission.test.ts

Match the pending-flag fallback edge after the callback's receiver block

2026-10-25 17:42:53 -05:00

canon-normalize.test.ts

Degrade a canonical form whose union mapped to the checked dynamic

2026-10-27 10:32:32 -05:00

cc-driver.test.ts

Support crypto.createDiffieHellman and getDiffieHellman

2026-10-21 21:55:47 -05:00

chunked-emission.test.ts

Merge main

2026-10-25 10:07:50 -05:00

cjs-lexer-cases.ts

…

cjs-lexer.test.ts

…

class-attributes.test.ts

Freeze class instances held in untyped values

2026-10-23 20:13:09 -05:00

class-field-updates.test.ts

…

class-method-mutations.test.ts

Guard direct calls after dot-property method writes through dictionary views

2026-10-23 21:34:14 -05:00

class-narrowing-emission.test.ts

…

class-protocol-boundaries.test.ts

Expect generic protocol dispatch to compile

2026-10-17 19:11:33 -05:00

class-structural-views.test.ts

Keep a live view for structural types a class implements by methods

2026-10-27 15:09:42 -07:00

collection-ingestion.test.ts

…

collection-keys.test.ts

Represent Dates as objects with identity

2026-10-22 20:33:09 -05:00

compat-exports.test.ts

Build the large compiler tables on first use

2026-10-25 05:23:35 -05:00

compiler-weak-collections.test.ts

…

completion-callbacks.test.ts

Run completion callbacks in their call's AsyncLocalStorage context, and add bind, snapshot and store options

2026-10-22 06:11:52 -05:00

constant-choice-emission.test.ts

Read a constant choice's index as on every path when it is the compared local

2026-10-26 01:47:16 -05:00

constant-graphs.test.ts

Read prototype methods stored under computed keys on ES5 instances

2026-10-24 16:26:38 -05:00

constant-table-emission.test.ts

…

constructed-class-dispatch.test.ts

…

counted-loop-emission.test.ts

Use an exact integer loop limit as the counted loop's endpoint

2026-10-27 13:49:48 -05:00

cpu-dispatch-emission.test.ts

Give every native function an unwind table entry

2026-10-26 21:49:14 -05:00

create-require-native-addon.test.ts

…

date-time-values.test.ts

Keep Dates as time values where no use observes their identity

2026-10-22 20:36:52 -05:00

debug-variables.test.ts

Keep a union loop binding in the debug-variables fixture

2026-10-25 07:46:24 -05:00

decl-origin-quoting.test.ts

Quote declaration-derived arguments in suggested type-patch commands

2026-10-25 18:53:50 -05:00

deep-equality.test.ts

…

dictionary-views.test.ts

Keep checked dictionary protocols and invalidate direct calls after method writes

2026-10-23 20:45:37 -05:00

discriminated-json.test.ts

…

emit-llvm.test.ts

Compute with NaN-boxed jsval values in the dynamic tier

2026-10-18 15:11:32 -07:00

emitter-flex-events.test.ts

…

ffi-lowering.test.ts

…

forin-keys.test.ts

Update tests for the record-ops store hook and the untyped-writes benchmark

2026-10-26 21:04:31 -05:00

format-float-arguments.test.ts

Run lone array callbacks as loops with their bodies inlined

2026-10-23 09:25:07 -05:00

fromcharcode-emission.test.ts

Compute with NaN-boxed jsval values in the dynamic tier

2026-10-18 15:11:32 -07:00

fs-glob-boundaries.test.ts

…

function-extra-optional-params.test.ts

Lower function values with extra optional parameters into narrower slots

2026-10-27 11:45:13 -07:00

function-layout.test.ts

Key the executable cache by the function layout's contents

2026-10-25 16:58:11 -05:00

function-table-dispatch-emission.test.ts

Keep borrowed fallbacks alive until their consumer and address review feedback

2026-10-25 19:42:59 -05:00

gen-wasm-spec-cases.mjs

Decode and validate the WebAssembly modules a program can load, and report them in coverage

2026-10-18 15:19:39 -07:00

generator-emission.test.ts

Give every native function an unwind table entry

2026-10-26 21:49:14 -05:00

generic-class-recovery.test.ts

…

generic-specialization-boundaries.test.ts

…

in-runtime-key-emission.test.ts

Name lowered helpers and closures independently of lowering order

2026-10-22 03:44:38 -05:00

indexed-comparison.test.ts

…

inline-array-fields.test.ts

Merge main

2026-10-27 23:02:33 -05:00

inline-record-assertion.test.ts

…

input-lifetime-emission.test.ts

…

int32-array-contracts.test.ts

Add Int32[] element contracts

2026-10-17 12:08:06 -07:00

int32-dynamic-exposure.test.ts

Keep int32 fields in programs with adopting casts

2026-10-26 02:57:52 -05:00

int32-element-array-emission.test.ts

Find the counter loop's fast copy inside its entry version

2026-10-27 08:31:01 -05:00

int32-global-emission.test.ts

Prove module-level number state int32 through every write

2026-10-27 07:57:22 -05:00

int32-local-emission.test.ts

…

int32-reflection-emission.test.ts

…

int32-slots-transfer.test.ts

Compute dev builds' int32 slot analysis on a forked process

2026-10-25 02:15:04 -05:00

integer-bitwise-arithmetic.test.ts

…

integer-induction-conversion.test.ts

…

integer-read-emission.test.ts

…

integer-view-compares.test.ts

Compare integer values without converting them to doubles

2026-10-23 20:02:25 -05:00

integer-view-emission.test.ts

…

internal-compiler-error.test.ts

…

ir.test.ts

Make Dates mutable objects with Node's setters and conversions

2026-10-23 22:08:02 -05:00

js-class-layouts.test.ts

Box JavaScript class instances at their exact class

2026-10-23 17:41:28 -07:00

js-collection-types.test.ts

Infer untyped JavaScript collection types once, without re-entering

2026-10-24 22:34:45 -05:00

js-ic-emission.test.ts

Read class instance fields inline at dynamic-tier property sites

2026-10-26 21:39:18 -05:00

js-override-returns.test.ts

…

json-callbacks.test.ts

Revert "Continue a failed checked cast with its value in a dynamic tail (#1561)"

2026-10-20 16:42:01 -07:00

json-schema-parse-emission.test.ts

Parse JSON into discriminated unions in one pass

2026-10-25 00:44:25 -05:00

keyed-method-writes.test.ts

Keep class methods native when element writes store data under their names

2026-10-23 13:20:59 -05:00

large-pages.test.ts

Add --large-pages: move executable code onto transparent huge pages

2026-10-26 23:41:46 -05:00

library-computed-methods.test.ts

…

library-identity-emission.test.ts

…

live-view-commit-emission.test.ts

…

llvm-lib-dispatch.test.ts

Compute with NaN-boxed jsval values in the dynamic tier

2026-10-18 15:11:32 -07:00

llvm-remainder.test.ts

Compute Math functions as V8 does and link libm only when a program needs it

2026-10-25 19:48:38 -05:00

llvm-runtime-abi.test.ts

Support named properties and Symbol.species on typed arrays held as untyped values

2026-10-23 21:30:21 -05:00

local-class-private-boundaries.test.ts

Merge main

2026-10-20 17:56:44 -05:00

localized-failure-retries.test.ts

Run registered classes' static initializers in place and keep retried statements' diagnostics

2026-10-25 23:22:35 -05:00

loop-entry-versions.test.ts

Version for loops on the positions they advance

2026-10-27 07:44:34 -05:00

map-get-borrow-emission.test.ts

Keep a Map.get result owned when its key can replace the map's holder

2026-10-25 03:25:37 -05:00

match-row-emission.test.ts

Merge main

2026-10-19 07:55:06 -05:00

math-receiver-borrow.test.ts

…

mobile-runtime-pack.test.ts

…

namespace-member-fences.test.ts

Read Math, JSON and Reflect as real objects in JavaScript

2026-10-23 10:16:30 -05:00

nan-coded-reads.test.ts

…

narrow-guard-emission.test.ts

Say that a lying type predicate can fail a narrowing guard

2026-10-18 07:31:43 -07:00

narrow-guard-traps.test.ts

Say that a lying type predicate can fail a narrowing guard

2026-10-18 07:31:43 -07:00

native-callable-values.test.ts

Merge main

2026-10-20 17:56:44 -05:00

native-callback-emission.test.ts

…

native-class-array-boundaries.test.ts

…

native-class-descriptors.test.ts

Merge main

2026-10-20 17:56:44 -05:00

native-codegen-integration.test.ts

Reuse the completion callback a stream passes to its option callbacks

2026-10-26 02:48:03 -05:00

native-codegen-lowering.test.ts

zlib: Brotli compression and decompression over the vendored brotli 1.2.0

2026-10-23 18:11:49 -05:00

native-json-value-end.test.ts

Scan checker reply strings with many escapes in one pass

2026-10-24 15:56:52 -05:00

native-partitions.test.ts

Compile small release and speed programs in partitions

2026-10-27 20:49:11 -05:00

native-profile.test.ts

Compile small release and speed programs in partitions

2026-10-27 20:49:11 -05:00

native-ts7-process.test.ts

…

node-fallback-modules.test.ts

Load a Node module's fallback declarations only when the program names it

2026-10-25 15:36:08 -05:00

node-index.test.ts

Keep emission's workers busy

2026-10-27 21:43:36 -05:00

node-pin.test.ts

Load a Node module's fallback declarations only when the program names it

2026-10-25 15:36:08 -05:00

numeric-array-reads.test.ts

…

numeric-call-specialization.test.ts

Specialize calls that omit a constant default and drop unreached originals

2026-10-27 10:49:22 -05:00

observed-method-guard.test.ts

Keep the dynamic call for observed methods called with a spread argument

2026-10-23 00:05:57 -05:00

offset-index-emission.test.ts

Check offset typed-array indexes against the sum for fractional bases and keep the base the sum read

2026-10-27 00:28:04 -05:00

package-shim-guard.test.ts

Build @hono/node-server 2.x into scriptc

2026-10-22 19:32:49 -07:00

parameter-version-emission.test.ts

Version functions on number parameters that bound their loops

2026-10-22 11:46:21 -05:00

performance-entry-boundaries.test.ts

…

periodic-guard-emission.test.ts

Unroll counted loops by the period of a guard on the counter's low bits

2026-10-26 10:19:25 -05:00

power-of-two-quotient-emission.test.ts

Divide by Math.pow(2, n) as a multiply by its reciprocal

2026-10-23 22:59:39 -05:00

process-builtin-values.test.ts

…

process-listener-int32-emission.test.ts

Keep int32 class fields when a program registers process event listeners

2026-10-16 20:13:00 -05:00

promise-union-widening.test.ts

Widen a union's promise arm when its payload widens

2026-10-27 15:09:52 -07:00

property-bag-emission.test.ts

…

recorded-lowering.test.ts

List the held entries a unit record reads, and leave units that register units or add class fields without one

2026-10-27 13:31:11 -05:00

regex-capture-emission.test.ts

…

regex-matcher-bounds.test.ts

Bound compiled regex reads by the characters left in the subject

2026-10-22 08:03:32 -05:00

regex-replace-lifetimes.test.ts

Release a substitution's operands when it returns

2026-10-26 08:30:42 -05:00

regex-replacers.test.ts

Run global substitutions with a literal replacement through build-time replacers

2026-10-25 13:35:04 -05:00

replacer-params.test.ts

Keep replace callback parameters checked-dynamic where parseInt or parseFloat expects another type

2026-10-25 06:42:25 -05:00

running-extrema-branches.test.ts

Keep running maximum and minimum updates as branches

2026-10-22 08:16:36 -05:00

runtime-optional-precision.test.ts

Call toJSON on foreign elements and merge main

2026-10-25 13:13:02 -05:00

scalar-record-emission.test.ts

…

self-hosting-boundaries.test.ts

…

set-iterator-seeds.test.ts

…

shape-inference.test.ts

Follow values through shadowed members, unknown keys on arrays, JSON callbacks and proxies

2026-10-24 13:20:02 -05:00

size-conversions.test.ts

…

source-debugging.test.ts

…

source-output.test.ts

Add --large-pages: move executable code onto transparent huge pages

2026-10-26 23:41:46 -05:00

speculative-hoisted-functions.test.ts

Merge main

2026-10-20 17:56:44 -05:00

speculative-loop-emission.test.ts

Keep the view-header test's loops speculative

2026-10-27 08:41:05 -05:00

split-loop-emission.test.ts

…

stable-names.test.ts

Keep the native compiler's profile matching its functions

2026-10-26 15:31:14 -05:00

startup.test.ts

…

static-receiver-boundaries.test.ts

…

string-accumulation-emission.test.ts

Compute with NaN-boxed jsval values in the dynamic tier

2026-10-18 15:11:32 -07:00

string-and-array-lifetimes.test.ts

…

string-char-at-emission.test.ts

Read ASCII characters of strings inline in charAt and indexing

2026-10-21 13:12:24 -05:00

string-char-loop-emission.test.ts

Version string scans over the UTF-16 units of strings that are not ASCII

2026-10-23 22:40:04 -05:00

string-iteration-emission.test.ts

Iterate strings over their bytes

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

string-scan-emission.test.ts

Convert a loop's string receiver to UTF-16 at once, and publish it only when the scan holds another string

2026-10-24 22:53:15 -05:00

string-unit-loop-emission.test.ts

Convert a loop's string receiver to UTF-16 at once only when the loop can read enough of it

2026-10-25 07:37:50 -05:00

structural-value-boundaries.test.ts

Keep class instance identity through structural record views

2026-10-16 14:02:02 -07:00

style-text.test.ts

…

symbol-fields.test.ts

…

target-cpu-emit.test.ts

Check target CPU levels in the native CLI and honor them for assembly and object builds

2026-10-23 18:26:12 -05:00

timer-delay-lowering.test.ts

Convert number | undefined timer delays with ToNumber

2026-10-27 09:11:51 -07:00

trunc-emission.test.ts

…

tuple-forof.test.ts

Accept a frame-stored tuple receiver in the tuple for-of test

2026-10-17 13:32:48 -07:00

type-mapper-unions.test.ts

Name lowered helpers and closures independently of lowering order

2026-10-22 03:44:38 -05:00

type-patches-command.test.ts

Address review feedback

2026-10-25 19:42:02 -05:00

type-patches.test.ts

Merge main

2026-10-25 15:18:27 -05:00

typed-array-alias-scope-emission.test.ts

Declare a typed-array loop version's alias scopes where its fast copy starts

2026-10-24 21:50:36 -05:00

typed-array-read-boxing.test.ts

…

typed-array-union-emission.test.ts

Merge main

2026-10-23 19:28:30 -05:00

unassigned-field-reads.test.ts

…

undici-shim-framing.test.ts

Merge main

2026-10-20 11:00:03 -05:00

undici-shim-types.test.ts

Give the undici npm cases a 600 s timeout

2026-10-19 23:38:15 -05:00

union-array-lowering.test.ts

Convert a union of tuples into an array slot

2026-10-27 16:44:46 -07:00

union-scalar-equality-emission.test.ts

Read the union payload inline when comparing it with a number or boolean

2026-10-22 09:32:19 -05:00

untyped-nullish-scalar.test.ts

Test a scalar optional left of ?? in JavaScript on the typed path

2026-10-26 11:12:57 -05:00

untyped-push-emission.test.ts

Dispatch untyped calls on plain arrays without the method ladder

2026-10-24 00:43:56 -05:00

util-runtime-linking.test.ts

…

var-hoisting.test.ts

…

wasi-paths.test.ts

…

wasm-spec-cases.txt

Decode and validate the WebAssembly modules a program can load, and report them in coverage

2026-10-18 15:19:39 -07:00

wasm-spec.test.ts

Decode and validate the WebAssembly modules a program can load, and report them in coverage

2026-10-18 15:19:39 -07:00

while-bytes-bounds-emission.test.ts

Keep the while-loop bound off counters written inside expressions

2026-10-24 18:32:42 -05:00

while-induction-emission.test.ts

Keep while-loop counters bounded by a typed array length in integers

2026-10-24 12:37:29 -05:00

widened-returns.test.ts

Key widened returns by their type-parameter bindings and skip self-calls

2026-10-24 13:32:14 -05:00

worker-shared-loop-version-emission.test.ts

Read and write shared typed-array elements at a counted loop's counter with plain accesses

2026-10-25 22:44:42 -05:00

worker-threads.test.ts

…