Compiler-explorer Alternatives

compiler-explorer reviews and mentions

• C++ Insights – See your source code with the eyes of a compiler
  5 projects | news.ycombinator.com | 5 Apr 2024

  C++ Insights is available online at https://cppinsights.io/

  It is also available at a touch of a button within the most excellent https://godbolt.org/

  along side the button that takes your code sample to https://quick-bench.com/

  Those sites and https://cppreference.com/ are what I'm using constantly while coding.

  I recently discovered https://whitebox.systems/ It's a local app with a $69 one-time charge. And, it only really works with "C With Classes" style functions. But, it looks promising as another productivity boost.

• Ask HN: How can I learn about performance optimization?
  6 projects | news.ycombinator.com | 2 Mar 2024

  [P&H RISC] https://www.google.com/books/edition/_/e8DvDwAAQBAJ

  Compiler Explorer by Matt Godbolt [Godbolt] can help better understand what code a compiler generates under different circumstances.

  [Godbolt] https://godbolt.org

  The official CPU architecture manuals from CPU vendors are surprisingly readable and information-rich. I only read the fragments that I need or that I am interested in and move on. Here is the Intel’s one [Intel]. I use the Combined Volume Set, which is a huge PDF comprising all the ten volumes. It is easier to search in when it’s all in one file. I can open several copies on different pages to make navigation easier.

  Intel also has a whole optimization reference manual [Intel] (scroll down, it’s all on the same page). The manual helps understand what exactly the CPU is doing.

  [Intel] https://www.intel.com/content/www/us/en/developer/articles/t...

  Personally, I believe in automated benchmarks that measure end-to-end what is actually important and notify you when a change impacts performance for the worse.

• Managing mutable data in Elixir with Rust
  1 project | news.ycombinator.com | 16 Feb 2024

  Let's compile it with https://godbolt.org/, turn on some optimisations and inspect the IR (-O2 -emit-llvm). Copying out the part that corresponds to the while loop:

    4:

• Free MIT Course: Performance Engineering of Software Systems
  4 projects | news.ycombinator.com | 10 Jan 2024

  resources were extra useful when building deeper intuitions about GPU performance for ML models at work and in graduate school.

  - CMU's "Deep Learning Systems" Course is hosted online and has YouTube lectures online. While not generally relevant to software performance, it is especially useful for engineers interested in building strong fundamentals that will serve them well when taking ML models into production environments: https://dlsyscourse.org/

  - Compiler Explorer is a tool that allows you easily input some code in and check how the assembly output maps to the source. I think this is exceptionally useful for beginner/intermediate programmers who are familiar with one compiled high-level language and have not been exposed to reading lots of assembly. It is also great for testing how different compiler flags affect assembly output. Many people used to coding in C and C++ probably know about this, but I still run into people who haven't so I share it whenever performance comes up: https://godbolt.org/

• Verifying Rust Zeroize with Assembly...including portable SIMD
  1 project | dev.to | 10 Jan 2024

  To really understand what's going on here we can look at the compiled assembly code. I'm working on a Mac and can do this using the objdump tool. Compiler Explorer is also a handy tool but doesn't seem to support Arm assembly which is what Rust will use when compiling on Apple Silicon.

• 4B If Statements
  5 projects | news.ycombinator.com | 27 Dec 2023
• Operator precedence doubt
  1 project | /r/cprogramming | 11 Dec 2023

  Play around with it in godbolt if you're really curious: https://godbolt.org/

• Cant Use Vectors in VSCode
  1 project | /r/cpp_questions | 10 Dec 2023

  It sounds like you are very new to programming and C++. If you'll allow me to make a recommendation: trying to set up a C++ in VS Code is quite a difficult task for a beginner. There are a lot of trip ups -- the compiler you're using, how your Code Runner or tasks.json or launch.json are set up, whether you're using Makefiles or Cmake, etc. For beginning with C++, I would really recommend messing around with Compiler Explorer instead (https://godbolt.org/). It was originally designed to turn C++ code into assembly for debugging, but you can use it like a fast scratchpad for learning, and it auto rebuilds as you make changes so you can see errors quickly. Good luck!

• Is the runtime stack (memory) and the call stack the same thing?
  1 project | /r/AskComputerScience | 8 Dec 2023

  Try stuff out at godbolt.org . See what happens if you switch to arm .vs. x86. Try -O0 and -O3.

• Performance difference between obj.function(...) and function(obj, ...) ?
  4 projects | /r/rust | 8 Dec 2023

  That sounds weird, the calls should produce identical machine code if all other factors are equal. You can compare the generated assembly code at Compiler Explorer. And yes, be sure to build with optimizations turned on.

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