Arm Assembly vs WebAssembly

Write AArch64 assembly when reverse-engineering iOS/Android binaries, bringing up bare-metal firmware on Cortex-M/A silicon, or hand-tuning NEON/SVE kernels where the compiler leaves performance on the table — nothing else gives register-level control on the chip running nearly every phone on Earth meets developers should learn webassembly when building performance-critical web applications, such as games, video editing tools, or scientific simulations, where javascript alone may not suffice. Here's our take.

Arm Assembly

Nice Pick

Write AArch64 assembly when reverse-engineering iOS/Android binaries, bringing up bare-metal firmware on Cortex-M/A silicon, or hand-tuning NEON/SVE kernels where the compiler leaves performance on the table — nothing else gives register-level control on the chip running nearly every phone on Earth

Pros

• Skip it for general embedded application logic: C plus intrinsics gets 95% of the speedup at a tenth of the debugging pain, so reach for that instead
• Related to: gcc, gdb

Cons

• Specific tradeoffs depend on your use case

WebAssembly

Developers should learn WebAssembly when building performance-critical web applications, such as games, video editing tools, or scientific simulations, where JavaScript alone may not suffice

Pros

• It is also valuable for porting existing codebases written in languages like C++ to the web, enabling legacy applications to run in browsers without rewriting
• Related to: javascript, rust

Cons

• Specific tradeoffs depend on your use case

The Verdict

These tools serve different purposes. Arm Assembly is a language while WebAssembly is a platform. We picked Arm Assembly based on overall popularity, but your choice depends on what you're building.

The Bottom Line

Arm Assembly wins

Based on overall popularity. Arm Assembly is more widely used, but WebAssembly excels in its own space.

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