Mobile/ARM64

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To meet Google's August 2019 deadline requiring 64-bit apps in the Google Play Store, we must ship ARM64 Fennec to the Release channel no later than Fennec 68 (2019-07-09). Thus, ARM64 Fennec will need to ride the trains no later than Fennec 68 Beta (2019-05-13).

Planning

M1: ARM64 Baseline Nightly

Publish ARM64 Fennec and GeckoView Nightly builds in the Google Play Store with ARM64 Baseline (but not Ion). We don't want these ARM64 Baseline-only ride to Beta or Release, but getting ARM64 Baseline stable is a prerequisite for ARM64 Ion and we'd like to get some dogfood testing of ARM64 builds. We need to fix all ARM64 Baseline JIT test failures before publishing ARM64 Fennec and GeckoView Nightly builds in the Google Play Store.

Bugs with the [arm64:m1] whiteboard tag:

No results.

0 Total; 0 Open (0%); 0 Resolved (0%); 0 Verified (0%);


M2: ARM64 Ion Nightly

Enable ARM64 Ion in Fennec and GeckoView Nightly builds. We need to fix all ARM64 Ion JIT test failures before enabling Ion for ARM64 Fennec and GeckoView Nightly users.

Bugs with the [arm64:m2] whiteboard tag:

Full Query
ID Summary Whiteboard Assigned to
1187093 [meta] ARM64: Pass Ion Jit-Tests [arm64:m2]

1 Total; 1 Open (100%); 0 Resolved (0%); 0 Verified (0%);


M3: ARM64 Ion Beta

Let ARM64 Ion in Fennec and GeckoView ride to Beta and Release. We should fix as many Nightly crash reports and fuzz bugs as time permits before letting Ion ride the trains.

To meet Google's deadline, ARM64 Fennec will need to ride the trains no later than Fennec 68 Beta (2019-05-13).

Bugs with the [arm64:m3] whiteboard tag:

Full Query
ID Summary Whiteboard Assigned to
1208526 ARM64: Reenable jsapi-tests/testPreserveJitCode once Ion is enabled [arm64:m3]
1400811 Increase the size of the run-time stack for the thread that runs the frame constructor on Fennec/Aarch64 [arm64:m3]
1442534 ARM64: Improve code generation for atomics by avoiding fences [arm64:m3]
1446819 Crash [@ mozalloc_abort] with UNIMPLEMENTED abort message and Debugger [jsbugmon:update,bisect][arm64:m3] Nicolas B. Pierron [:nbp]
1451720 MaybeEnterJIT SIGSEGV crashes on Android/ARM64 (occasional) [geckoview:fxr:p2][arm64:m3]
1452020 ARM64 assembler emits 8-byte constant loads from 4-byte aligned addresses [arm64:m3]
1513189 No Ion on ARM64 makes asm.js very slow [arm64:m3]
1518882 Enable raptor-unity-webgl (UGL) for ARM64 GeckoView on Google Pixel 2 [arm64:m3]
1537686 5.46 - 9.91% raptor-tp6m-facebook/instagram/reddit (android-hw-p2-8-0-android-aarch64) regression on push ebf98069b0fbc60e1cfa79ce97f4266c66860bcd (Tue Mar 19 2019) [arm64:m3]

9 Total; 9 Open (100%); 0 Resolved (0%); 0 Verified (0%);


M4: ARM64 Ion Backlog

Follow-up ARM64 work that doesn't block shipping ARM64 Ion in Fennec or GeckoView.