Link UniformTypeIdentifiers on iOS, and gate the frameworks the port needs by shai-almog · Pull Request #5776 · codenameone/CodenameOne

shai-almog · 2026-09-11T19:50:49Z

The bug

Every iOS device archive fails at the link:

Undefined symbols for architecture arm64:
  "_OBJC_CLASS_$_UTType", referenced from:
       in 866.arm64.thinlto.o
ld: symbol(s) not found for architecture arm64
** ARCHIVE FAILED **

ByteCodeTranslator treated UniformTypeIdentifiers.framework as the macOS spelling of MobileCoreServices and linked it on that branch alone:

if (platform.hasIosDeviceIdioms()) {
    ...
    includeFrameworks.add("MobileCoreServices.framework");
} else {
    includeFrameworks.add("UniformTypeIdentifiers.framework");   // macOS only
}

It is not the same framework. MobileCoreServices carries only the deprecated C functions (UTTypeCreatePreferredIdentifierForTag); the UTType class lives in UniformTypeIdentifiers on every platform from iOS 14 / macOS 11 / watchOS 7 / tvOS 14. CN1DragAndDrop.m compiles that class into every slice — the MIME-to-identifier mapping sits outside its UIKit guard because the clipboard natives need it too.

Two commits collided: #5601 wrote the either/or split, #5662 later introduced the UTType use. Neither is wrong alone.

The fix

Link it on all slices, weakly — ios.deployment_target reaches back before the framework existed, and a hard link against one the device lacks kills the process at launch; the uses are already @available fenced. Classified in WatchNativeBuilder as linkable, verified present in both watch SDKs.

Why no CI job caught it

Every iOS job was green for five days, and structurally had to be. Nothing declares the framework there either — I pulled the link line out of the last green master nightly and it has no -framework UniformTypeIdentifiers. The sample supplies it by accident, three ways a plain application does not have:

a Swift autolink hint — the sample has Swift in its app target, and import SwiftUI makes swiftc stamp -framework UniformTypeIdentifiers into the object as an LC_LINKER_OPTION
CLANG_ENABLE_MODULES — IPhoneBuilder turns it on for the Metal build, so the same source links there and fails on the GL one
CocoaPods dependencies already on the link line

The gate

scripts/check-ios-framework-links.py runs over the project build-ios-app.sh has already generated (seconds, no extra build) and answers one question: every symbol our natives reference that an SDK framework defines — is it defined by a framework this project declares?

It compiles the port's natives with the project's own settings (prefix header, defines, per-file -fobjc-arc, modules where the project asks) and resolves the undefined symbols against the declared set alone. Autolink cannot hide anything from it — a hint is a load command, not a definition, so nm still reports the symbol undefined, and the probe it links to confirm a finding carries no hints at all.

Two deliberate properties: a native that fails to compile is fatal rather than skipped (a partial set reporting success is the failure mode this replaces), and the SDK symbol index self-tests against a floor plus two known symbols, because a text index that parses to nothing reports every project clean.

Wired into build-ios and build-ios-metal.

Verification

Gate bites: with the post-Native operating system drag and drop, carrying the clipboard's own payload #5662 source injected into a project that does not declare the framework, it fails naming UniformTypeIdentifiers.framework / _OBJC_CLASS_$_UTType; declaring it on the app target makes it pass. 79 of 79 port natives compile, 623 SDK symbols examined, 556k symbols indexed.
Link A/B with the real CN1DragAndDrop.m at arm64-apple-ios15.0, only CN1's own callbacks stubbed so every system symbol had to resolve for real: undefined without the framework, resolved with -weak_framework UniformTypeIdentifiers.
Generated project carries it in PBXFrameworksBuildPhase with ATTRIBUTES = (Weak).
WatchNativeBuilderTest 49/49, SpotBugs 0 findings on ByteCodeTranslator.

Ruled out on the way: device-vs-simulator, Debug-vs-Release, LTO, and deployment target — the simulator link fails identically.

@available

…needs ByteCodeTranslator treated UniformTypeIdentifiers.framework as the macOS spelling of MobileCoreServices and linked it on that branch alone. It is not: MobileCoreServices carries only the deprecated C functions, while the UTType class lives in UniformTypeIdentifiers on every platform from iOS 14 / macOS 11 / watchOS 7 / tvOS 14. CN1DragAndDrop.m compiles that class into every slice -- its MIME-to-identifier mapping sits outside the UIKit guard because the clipboard natives need it too -- so an iOS application referenced _OBJC_CLASS_$_UTType with nothing defining it, and every device archive failed at the link. Link it on all slices, weakly: ios.deployment_target reaches back before the framework existed and a hard link against one the device lacks kills the process at launch, while the uses are already @available fenced. Classified in WatchNativeBuilder as linkable, verified present in both watch SDKs. Why no CI job caught it ----------------------- Every iOS job was green for five days, and structurally had to be. Nothing declared the framework there either -- the sample application supplies it by accident, three ways a plain application does not have: - a Swift autolink hint, since the sample has Swift in its app target and `import SwiftUI` stamps -framework UniformTypeIdentifiers into the object - CLANG_ENABLE_MODULES, which IPhoneBuilder turns on for the Metal build, so the same source links there and fails on the GL one - CocoaPods dependencies on the link line scripts/check-ios-framework-links.py closes that. It runs over the project build-ios-app.sh has already generated, compiles the port's natives with the project's own settings, and resolves their undefined symbols against the frameworks the project DECLARES -- never against an autolink hint, which is a load command rather than a definition and so cannot hide a symbol from nm. A native that fails to compile is fatal rather than skipped, and the SDK symbol index self-tests, because both of those failure modes report success. Verified: with the post-#5662 source injected into a project that does not declare the framework the gate fails naming UniformTypeIdentifiers.framework and _OBJC_CLASS_$_UTType; declaring it on the app target makes the gate pass. 79 of 79 port natives compile, 623 SDK symbols examined. The link itself was A/B'd with the real CN1DragAndDrop.m for arm64-apple-ios15.0: undefined without the framework, resolved with -weak_framework UniformTypeIdentifiers. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

chatgpt-codex-connector · 2026-09-11T19:51:02Z

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-11T19:54:38.288322Z	`7ea24ed`	PR opened

ℹ️ About Codex in GitHub

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Open a pull request for review
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Comment "@codex review" or "@codex security review".

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shai-almog · 2026-09-11T20:12:31Z

Compared 166 screenshots: 166 matched.
Native Windows port, REAL shipping pipeline: the hellocodenameone screenshot suite rendered by a binary CROSS-COMPILED on Linux (clang-cl + xwin, WebView2 linked) and RUN on a Windows x64 runner. Compared against the in-repo baseline in scripts/windows/screenshots.

Benchmark Results

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	SSE2 (x64) / NEON (arm64) native kernels
SIMD int-add (64K x300)	java 61ms / native 4ms = 15.2x speedup
SIMD float-mul (64K x300)	java 71ms / native 4ms = 17.7x speedup
SIMD kernel correctness	PASS (native result == scalar reference)
Base64 native bridge	unavailable (CN1 + SIMD + image benchmarks only)
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 SIMD byte path	gated to scalar (CPU autovectorizes scalar; explicit SIMD not beneficial here)
Base64 CN1 encode	192.000 ms
Base64 CN1 decode	126.000 ms
Base64 SIMD encode	100.000 ms
Base64 encode ratio (SIMD/CN1)	0.521x (47.9% faster)
Base64 SIMD decode	94.000 ms
Base64 decode ratio (SIMD/CN1)	0.746x (25.4% faster)
Image encode benchmark iterations	100
Image createMask (SIMD off)	36.000 ms
Image createMask (SIMD on)	3.000 ms
Image createMask ratio (SIMD on/off)	0.083x (91.7% faster)
Image applyMask (SIMD off)	35.000 ms
Image applyMask (SIMD on)	60.000 ms
Image applyMask ratio (SIMD on/off)	1.714x (71.4% slower)
Image modifyAlpha (SIMD off)	40.000 ms
Image modifyAlpha (SIMD on)	24.000 ms
Image modifyAlpha ratio (SIMD on/off)	0.600x (40.0% faster)
Image modifyAlpha removeColor (SIMD off)	34.000 ms
Image modifyAlpha removeColor (SIMD on)	23.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off)	0.676x (32.4% faster)

shai-almog · 2026-09-11T20:13:50Z

Compared 166 screenshots: 166 matched.
Native Windows port (x64 / Intel-AMD): full hellocodenameone screenshot suite rendered offscreen with Direct2D/DirectWrite, plus the real benchmarks (base64 native/CN1/SIMD, image createMask/applyMask/modifyAlpha/PNG/JPEG, SSE2 SIMD kernels). Compared against the in-repo baseline in scripts/windows/screenshots.

Benchmark Results

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	SSE2 (x64) / NEON (arm64) native kernels
SIMD int-add (64K x300)	java 62ms / native 5ms = 12.4x speedup
SIMD float-mul (64K x300)	java 63ms / native 5ms = 12.6x speedup
SIMD kernel correctness	PASS (native result == scalar reference)
Base64 native bridge	unavailable (CN1 + SIMD + image benchmarks only)
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 SIMD byte path	gated to scalar (CPU autovectorizes scalar; explicit SIMD not beneficial here)
Base64 CN1 encode	193.000 ms
Base64 CN1 decode	133.000 ms
Base64 SIMD encode	111.000 ms
Base64 encode ratio (SIMD/CN1)	0.575x (42.5% faster)
Base64 SIMD decode	99.000 ms
Base64 decode ratio (SIMD/CN1)	0.744x (25.6% faster)
Image encode benchmark iterations	100
Image createMask (SIMD off)	10.000 ms
Image createMask (SIMD on)	3.000 ms
Image createMask ratio (SIMD on/off)	0.300x (70.0% faster)
Image applyMask (SIMD off)	41.000 ms
Image applyMask (SIMD on)	60.000 ms
Image applyMask ratio (SIMD on/off)	1.463x (46.3% slower)
Image modifyAlpha (SIMD off)	31.000 ms
Image modifyAlpha (SIMD on)	42.000 ms
Image modifyAlpha ratio (SIMD on/off)	1.355x (35.5% slower)
Image modifyAlpha removeColor (SIMD off)	39.000 ms
Image modifyAlpha removeColor (SIMD on)	51.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off)	1.308x (30.8% slower)

github-actions · 2026-09-11T20:14:01Z

Cloudflare Preview

URL: https://pr-5776-website-preview.codenameone.pages.dev
Branch: pr-5776-website-preview

shai-almog · 2026-09-11T20:14:25Z

Compared 151 screenshots: 151 matched.

Native Android coverage

📊 Line coverage: 9.26% (9203/99417 lines covered) [HTML preview] (artifact android-coverage-report, jacocoAndroidReport/html/index.html)
- Other counters: instruction 9.01% (47273/524920), branch 3.57% (1777/49739), complexity 3.54% (1877/53026), method 5.44% (1517/27888), class 10.92% (408/3736)
- Lowest covered classes
  - kotlin.collections.kotlin.collections.ArraysKt___ArraysKt – 0.00% (0/6367 lines covered)
  - kotlin.collections.unsigned.kotlin.collections.unsigned.UArraysKt___UArraysKt – 0.00% (0/2384 lines covered)
  - org.jacoco.agent.rt.internal_0e20598.asm.org.jacoco.agent.rt.internal_0e20598.asm.ClassReader – 0.00% (0/1524 lines covered)
  - kotlin.collections.kotlin.collections.CollectionsKt___CollectionsKt – 0.00% (0/1187 lines covered)
  - org.jacoco.agent.rt.internal_0e20598.asm.org.jacoco.agent.rt.internal_0e20598.asm.MethodWriter – 0.00% (0/922 lines covered)
  - kotlin.sequences.kotlin.sequences.SequencesKt___SequencesKt – 0.00% (0/736 lines covered)
  - com.google.common.cache.com.google.common.cache.LocalCache$Segment – 0.00% (0/726 lines covered)
  - okio.okio.Buffer – 0.00% (0/687 lines covered)
  - kotlin.text.kotlin.text.StringsKt___StringsKt – 0.00% (0/625 lines covered)
  - org.jacoco.agent.rt.internal_0e20598.asm.org.jacoco.agent.rt.internal_0e20598.asm.Frame – 0.00% (0/570 lines covered)

✅ Native Android screenshot tests passed.

Native Android coverage

📊 Line coverage: 9.26% (9203/99417 lines covered) [HTML preview] (artifact android-coverage-report, jacocoAndroidReport/html/index.html)
- Other counters: instruction 9.01% (47273/524920), branch 3.57% (1777/49739), complexity 3.54% (1877/53026), method 5.44% (1517/27888), class 10.92% (408/3736)
- Lowest covered classes
  - kotlin.collections.kotlin.collections.ArraysKt___ArraysKt – 0.00% (0/6367 lines covered)
  - kotlin.collections.unsigned.kotlin.collections.unsigned.UArraysKt___UArraysKt – 0.00% (0/2384 lines covered)
  - org.jacoco.agent.rt.internal_0e20598.asm.org.jacoco.agent.rt.internal_0e20598.asm.ClassReader – 0.00% (0/1524 lines covered)
  - kotlin.collections.kotlin.collections.CollectionsKt___CollectionsKt – 0.00% (0/1187 lines covered)
  - org.jacoco.agent.rt.internal_0e20598.asm.org.jacoco.agent.rt.internal_0e20598.asm.MethodWriter – 0.00% (0/922 lines covered)
  - kotlin.sequences.kotlin.sequences.SequencesKt___SequencesKt – 0.00% (0/736 lines covered)
  - com.google.common.cache.com.google.common.cache.LocalCache$Segment – 0.00% (0/726 lines covered)
  - okio.okio.Buffer – 0.00% (0/687 lines covered)
  - kotlin.text.kotlin.text.StringsKt___StringsKt – 0.00% (0/625 lines covered)
  - org.jacoco.agent.rt.internal_0e20598.asm.org.jacoco.agent.rt.internal_0e20598.asm.Frame – 0.00% (0/570 lines covered)

Benchmark Results

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	scalar fallback (no native SIMD)
SIMD int-add (64K x300)	java 234ms / native 185ms = 1.2x speedup
SIMD float-mul (64K x300)	java 138ms / native 146ms = 0.9x speedup
SIMD kernel correctness	PASS (native result == scalar reference)
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 SIMD byte path	gated to scalar (CPU autovectorizes scalar; explicit SIMD not beneficial here)
Base64 CN1 encode	114.000 ms
Base64 CN1 decode	104.000 ms
Base64 native encode	417.000 ms
Base64 encode ratio (CN1/native)	0.273x (72.7% faster)
Base64 native decode	350.000 ms
Base64 decode ratio (CN1/native)	0.297x (70.3% faster)
Image encode benchmark status	skipped (SIMD unsupported)

github-actions · 2026-09-11T20:17:31Z

✅ Continuous Quality Report

Test & Coverage

✅ Tests: 8698 total, 0 failed, 4 skipped
📊 Line coverage: 62.13% [HTML preview] [Download]
- Lowest covered classes
  - com.codename1.gaming.level.GameSceneView – 0.00%
  - com.codename1.crash.CrashProtection – 0.00%
  - com.codename1.payment.CommerceManager – 0.00%
  - com.codename1.wearable.WearableMessage – 0.00%
  - com.codename1.vr.VRView – 0.00%
  - com.codename1.appreview.RatingDialog – 0.00%
  - com.codename1.db.ManagedKeys – 0.00%
  - com.codename1.calendar.DefaultCalendarHttpTransport – 0.00%
  - com.codename1.security.Secrets – 0.00%
  - com.codename1.calendar.OidcCalendarTokenProvider – 0.00%

Static Analysis

SpotBugs [Report archive]
- ✅ ByteCodeTranslator: 0 findings (no issues)
- ✅ android: 0 findings (no issues)
- ✅ build-hint-catalog: 0 findings (no issues)
- ✅ build-hint-tools: 0 findings (no issues)
- ✅ codenameone-maven-plugin: 0 findings (no issues)
- ✅ core-unittests: 0 findings (no issues)
- ✅ ios: 0 findings (no issues)
✅ PMD: 0 findings (no issues) [Report archive]
✅ Checkstyle: 0 findings (no issues) [Report archive]

Generated automatically by the PR CI workflow.

shai-almog · 2026-09-11T20:21:20Z

Compared 166 screenshots: 166 matched.
Native Linux port (x64), GTK3/Cairo/Pango, ParparVM bytecode-to-C (no JVM): the hellocodenameone screenshot suite rendered by a native ELF built + run on the GitHub x64 runner. Baseline: scripts/linux/screenshots.

shai-almog · 2026-09-11T20:21:26Z

Compared 166 screenshots: 166 matched.
Native Linux port (arm64), GTK3/Cairo/Pango, ParparVM bytecode-to-C (no JVM): the hellocodenameone screenshot suite rendered by a native ELF built + run on the GitHub arm64 runner. Baseline: scripts/linux/screenshots-arm.

shai-almog · 2026-09-11T20:26:31Z

Compared 166 screenshots: 166 matched.
Native Windows port (arm64 / Apple Silicon - Arm): full hellocodenameone screenshot suite rendered offscreen with Direct2D/DirectWrite, plus the real benchmarks (base64 native/CN1/SIMD, image createMask/applyMask/modifyAlpha/PNG/JPEG, NEON SIMD kernels). Compared against the in-repo baseline in scripts/windows/screenshots.

Benchmark Results

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	SSE2 (x64) / NEON (arm64) native kernels
SIMD int-add (64K x300)	java 54ms / native 4ms = 13.5x speedup
SIMD float-mul (64K x300)	java 54ms / native 3ms = 18.0x speedup
SIMD kernel correctness	PASS (native result == scalar reference)
Base64 native bridge	unavailable (CN1 + SIMD + image benchmarks only)
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 SIMD byte path	gated to scalar (CPU autovectorizes scalar; explicit SIMD not beneficial here)
Base64 CN1 encode	265.000 ms
Base64 CN1 decode	156.000 ms
Base64 SIMD encode	65.000 ms
Base64 encode ratio (SIMD/CN1)	0.245x (75.5% faster)
Base64 SIMD decode	63.000 ms
Base64 decode ratio (SIMD/CN1)	0.404x (59.6% faster)
Image encode benchmark iterations	100
Image createMask (SIMD off)	7.000 ms
Image createMask (SIMD on)	2.000 ms
Image createMask ratio (SIMD on/off)	0.286x (71.4% faster)
Image applyMask (SIMD off)	55.000 ms
Image applyMask (SIMD on)	45.000 ms
Image applyMask ratio (SIMD on/off)	0.818x (18.2% faster)
Image modifyAlpha (SIMD off)	17.000 ms
Image modifyAlpha (SIMD on)	8.000 ms
Image modifyAlpha ratio (SIMD on/off)	0.471x (52.9% faster)
Image modifyAlpha removeColor (SIMD off)	21.000 ms
Image modifyAlpha removeColor (SIMD on)	39.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off)	1.857x (85.7% slower)

shai-almog · 2026-09-11T20:35:21Z

Compared 181 screenshots: 181 matched.
✅ JavaScript-port screenshot tests passed.

github-actions · 2026-09-11T20:52:38Z

✅ ByteCodeTranslator Quality Report

Test & Coverage

✅ Tests: 569 total, 0 failed, 57 skipped

Benchmark Results

Execution Time: 23088 ms
Hotspots (Top 20 sampled methods):
- 20.34% java.util.ArrayList.indexOf (410 samples)
- 10.22% com.codename1.tools.translator.BytecodeMethod.addToConstantPool (206 samples)
- 3.77% com.codename1.tools.translator.ByteCodeClass.hasDeclaredMethod (76 samples)
- 3.67% com.codename1.tools.translator.Parser.cn1EnsureSubclassIndex (74 samples)
- 2.73% com.codename1.tools.translator.BytecodeMethod.optimize (55 samples)
- 2.53% java.lang.StringBuilder.append (51 samples)
- 2.48% org.objectweb.asm.tree.analysis.Analyzer.analyze (50 samples)
- 2.13% com.codename1.tools.translator.Parser.generateClassAndMethodIndexHeader (43 samples)
- 1.93% com.codename1.tools.translator.Parser.classIndex (39 samples)
- 1.79% java.lang.Object.hashCode (36 samples)
- 1.69% com.codename1.tools.translator.bytecodes.Invoke.resolveDirectTarget (34 samples)
- 1.39% org.objectweb.asm.tree.analysis.Analyzer.findSubroutine (28 samples)
- 1.39% java.util.HashMap.hash (28 samples)
- 1.14% java.lang.String.equals (23 samples)
- 1.04% com.codename1.tools.translator.BytecodeMethod.appendCMethodPrefix (21 samples)
- 1.04% org.objectweb.asm.ClassReader.readCode (21 samples)
- 0.99% java.lang.System.identityHashCode (20 samples)
- 0.84% java.util.TreeMap.getEntry (17 samples)
- 0.84% com.codename1.tools.translator.bytecodes.Invoke.findMethodUp (17 samples)
- 0.79% com.codename1.tools.translator.Parser.cullMethods (16 samples)
⚠️ Coverage report not generated.

Static Analysis

✅ SpotBugs: no findings (report was not generated by the build).
⚠️ PMD report not generated.
⚠️ Checkstyle report not generated.

Generated automatically by the PR CI workflow.

shai-almog · 2026-09-11T22:47:21Z

Compared 160 screenshots: 160 matched.
✅ Native Mac screenshot tests passed.

Benchmark Results

VM Translation Time: 0 seconds
Compilation Time: 213 seconds

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	SSE2 (x64) / NEON (arm64) native kernels
SIMD int-add (64K x300)	java 68ms / native 3ms = 22.6x speedup
SIMD float-mul (64K x300)	java 56ms / native 3ms = 18.6x speedup
SIMD kernel correctness	PASS (native result == scalar reference)
Base64 native bridge	unavailable (CN1 + SIMD + image benchmarks only)
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 SIMD byte path	active (NEON-accelerated)
Base64 CN1 encode	162.000 ms
Base64 CN1 decode	102.000 ms
Image encode benchmark iterations	100
Image createMask (SIMD off)	18.000 ms
Image createMask (SIMD on)	4.000 ms
Image createMask ratio (SIMD on/off)	0.222x (77.8% faster)
Image applyMask (SIMD off)	190.000 ms
Image applyMask (SIMD on)	62.000 ms
Image applyMask ratio (SIMD on/off)	0.326x (67.4% faster)
Image modifyAlpha (SIMD off)	50.000 ms
Image modifyAlpha (SIMD on)	36.000 ms
Image modifyAlpha ratio (SIMD on/off)	0.720x (28.0% faster)
Image modifyAlpha removeColor (SIMD off)	46.000 ms
Image modifyAlpha removeColor (SIMD on)	38.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off)	0.826x (17.4% faster)

shai-almog · 2026-09-12T03:49:10Z

Compared 144 screenshots: 144 matched.
✅ Native Apple TV (tvOS, Metal) screenshot tests passed.

shai-almog · 2026-09-12T04:35:07Z

Compared 148 screenshots: 148 matched.
✅ Native Mac screenshot tests passed.

Benchmark Results

VM Translation Time: 0 seconds
Compilation Time: 473 seconds

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	SSE2 (x64) / NEON (arm64) native kernels
SIMD int-add (64K x300)	java 63ms / native 3ms = 21.0x speedup
SIMD float-mul (64K x300)	java 56ms / native 3ms = 18.6x speedup
SIMD kernel correctness	PASS (native result == scalar reference)
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 SIMD byte path	active (NEON-accelerated)
Base64 CN1 encode	244.000 ms
Base64 CN1 decode	117.000 ms
Base64 native encode	679.000 ms
Base64 encode ratio (CN1/native)	0.359x (64.1% faster)
Base64 native decode	263.000 ms
Base64 decode ratio (CN1/native)	0.445x (55.5% faster)
Base64 SIMD encode	67.000 ms
Base64 encode ratio (SIMD/CN1)	0.275x (72.5% faster)
Base64 SIMD decode	50.000 ms
Base64 decode ratio (SIMD/CN1)	0.427x (57.3% faster)
Base64 encode ratio (SIMD/native)	0.099x (90.1% faster)
Base64 decode ratio (SIMD/native)	0.190x (81.0% faster)
Image encode benchmark iterations	100
Image createMask (SIMD off)	7.000 ms
Image createMask (SIMD on)	2.000 ms
Image createMask ratio (SIMD on/off)	0.286x (71.4% faster)
Image applyMask (SIMD off)	51.000 ms
Image applyMask (SIMD on)	35.000 ms
Image applyMask ratio (SIMD on/off)	0.686x (31.4% faster)
Image modifyAlpha (SIMD off)	36.000 ms
Image modifyAlpha (SIMD on)	36.000 ms
Image modifyAlpha ratio (SIMD on/off)	1.000x (0.0% slower)
Image modifyAlpha removeColor (SIMD off)	32.000 ms
Image modifyAlpha removeColor (SIMD on)	29.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off)	0.906x (9.4% faster)

shai-almog · 2026-09-12T05:27:27Z

Compared 149 screenshots: 149 matched.
✅ Native iOS Metal screenshot tests passed.

Benchmark Results

VM Translation Time: 0 seconds
Compilation Time: 1743 seconds

Build and Run Timing

Metric	Duration
Simulator Boot	89000 ms
Simulator Boot (Run)	1000 ms
App Install	19000 ms
App Launch	5000 ms
Test Execution	422000 ms

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	SSE2 (x64) / NEON (arm64) native kernels
SIMD int-add (64K x300)	java 78ms / native 4ms = 19.5x speedup
SIMD float-mul (64K x300)	java 86ms / native 4ms = 21.5x speedup
SIMD kernel correctness	PASS (native result == scalar reference)
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 SIMD byte path	active (NEON-accelerated)
Base64 CN1 encode	220.000 ms
Base64 CN1 decode	120.000 ms
Base64 native encode	677.000 ms
Base64 encode ratio (CN1/native)	0.325x (67.5% faster)
Base64 native decode	303.000 ms
Base64 decode ratio (CN1/native)	0.396x (60.4% faster)
Base64 SIMD encode	50.000 ms
Base64 encode ratio (SIMD/CN1)	0.227x (77.3% faster)
Base64 SIMD decode	55.000 ms
Base64 decode ratio (SIMD/CN1)	0.458x (54.2% faster)
Base64 encode ratio (SIMD/native)	0.074x (92.6% faster)
Base64 decode ratio (SIMD/native)	0.182x (81.8% faster)
Image encode benchmark iterations	100
Image createMask (SIMD off)	8.000 ms
Image createMask (SIMD on)	1.000 ms
Image createMask ratio (SIMD on/off)	0.125x (87.5% faster)
Image applyMask (SIMD off)	55.000 ms
Image applyMask (SIMD on)	40.000 ms
Image applyMask ratio (SIMD on/off)	0.727x (27.3% faster)
Image modifyAlpha (SIMD off)	50.000 ms
Image modifyAlpha (SIMD on)	36.000 ms
Image modifyAlpha ratio (SIMD on/off)	0.720x (28.0% faster)
Image modifyAlpha removeColor (SIMD off)	38.000 ms
Image modifyAlpha removeColor (SIMD on)	132.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off)	3.474x (247.4% slower)

shai-almog · 2026-09-12T05:34:42Z

Compared 143 screenshots: 143 matched.
✅ Native iOS screenshot tests passed.

Benchmark Results

VM Translation Time: 0 seconds
Compilation Time: 1337 seconds

Build and Run Timing

Metric	Duration
Simulator Boot	90000 ms
Simulator Boot (Run)	1000 ms
App Install	18000 ms
App Launch	1000 ms
Test Execution	593000 ms

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	SSE2 (x64) / NEON (arm64) native kernels
SIMD int-add (64K x300)	java 82ms / native 5ms = 16.4x speedup
SIMD float-mul (64K x300)	java 114ms / native 4ms = 28.5x speedup
SIMD kernel correctness	PASS (native result == scalar reference)
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 SIMD byte path	active (NEON-accelerated)
Base64 CN1 encode	255.000 ms
Base64 CN1 decode	296.000 ms
Base64 native encode	2072.000 ms
Base64 encode ratio (CN1/native)	0.123x (87.7% faster)
Base64 native decode	1094.000 ms
Base64 decode ratio (CN1/native)	0.271x (72.9% faster)
Base64 SIMD encode	136.000 ms
Base64 encode ratio (SIMD/CN1)	0.533x (46.7% faster)
Base64 SIMD decode	80.000 ms
Base64 decode ratio (SIMD/CN1)	0.270x (73.0% faster)
Base64 encode ratio (SIMD/native)	0.066x (93.4% faster)
Base64 decode ratio (SIMD/native)	0.073x (92.7% faster)
Image encode benchmark iterations	100
Image createMask (SIMD off)	89.000 ms
Image createMask (SIMD on)	18.000 ms
Image createMask ratio (SIMD on/off)	0.202x (79.8% faster)
Image applyMask (SIMD off)	533.000 ms
Image applyMask (SIMD on)	269.000 ms
Image applyMask ratio (SIMD on/off)	0.505x (49.5% faster)
Image modifyAlpha (SIMD off)	743.000 ms
Image modifyAlpha (SIMD on)	426.000 ms
Image modifyAlpha ratio (SIMD on/off)	0.573x (42.7% faster)
Image modifyAlpha removeColor (SIMD off)	351.000 ms
Image modifyAlpha removeColor (SIMD on)	818.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off)	2.330x (133.0% slower)

shai-almog · 2026-09-12T06:51:45Z

Compared 217 screenshots: 217 matched.
✅ Native Apple Watch (watchOS, Core Graphics) screenshot tests passed.

shai-almog merged commit 11e5f0b into master Sep 11, 2026
60 checks passed

shai-almog deleted the ios-uniformtypeidentifiers-link branch September 11, 2026 21:41

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shai-almog commented Sep 11, 2026

The bug

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Why no CI job caught it

The gate

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Cloudflare Preview

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✅ Continuous Quality Report

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✅ ByteCodeTranslator Quality Report

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