compiler-explorer
w64devkit
compiler-explorer | w64devkit | |
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191 | 72 | |
15,198 | 2,375 | |
1.5% | - | |
9.9 | 7.6 | |
about 16 hours ago | 12 days ago | |
TypeScript | C | |
BSD 2-clause "Simplified" License | The Unlicense |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
compiler-explorer
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What if null was an Object in Java?
At least on android arm64, looks like a `dmb ishst` is emitted after the constructor, which allows future loads to not need an explicit barrier. Removing `final` from the field causes that barrier to not be emitted.
https://godbolt.org/#g:!((g:!((g:!((h:codeEditor,i:(filename...
- Ask HN: Which books/resources to understand modern Assembler?
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3rd Edition of Programming: Principles and Practice Using C++ by Stroustrup
You said You won't get "extreme performance" from C++ because it is buried under the weight of decades of compatibility hacks.
Now your whole comment is about vector behavior. You haven't talked about what 'decades of compatibility hacks' are holding back performance. Whatever behavior you want from a vector is not a language limitation.
You could write your own vector and be done with it, although I'm still not sure what you mean, since once you reserve capacity a vector still doubles capacity when you overrun it. The reason this is never a performance obstacle is that if you're going to use more memory anyway, you reserve more up front. This is what any normal programmer does and they move on.
Show what you mean here:
https://godbolt.org/
I've never used ISPC. It's somewhat interesting although since it's Intel focused of course it's not actually portable.
I guess now the goal posts are shifting. First it was that "C++ as a language has performance limitations" now it's "rust has a vector that has a function I want and also I want SIMD stuff that doesn't exist. It does exist? not like that!"
Try to stay on track. You said there were "decades of compatibility hacks" holding back C++ performance then you went down a rabbit hole that has nothing to do with supporting that.
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C++ Insights – See your source code with the eyes of a compiler
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.
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Ask HN: How can I learn about performance optimization?
[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.
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Managing mutable data in Elixir with Rust
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:
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Free MIT Course: Performance Engineering of Software Systems
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/
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Verifying Rust Zeroize with Assembly...including portable SIMD
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
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Operator precedence doubt
Play around with it in godbolt if you're really curious: https://godbolt.org/
w64devkit
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Mingw VS Code
Try w64devkit https://github.com/skeeto/w64devkit
- Portable C and C++ Development Kit for x64 (and x86) Windows
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Windows XP dedicated image viewer?
Click "View raw" to download. The executable is just ~3kB. If you'd like to try building it yourself, I distribute a Windows XP-friendly, no-installation-required C and C++ toolchain, w64devkit. The 32-bit toolchains are labeled "i686" (on the right under "Releases"). The build command (cc ...) is at the top of the source file.
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Can you help me finish this vDSO Loader + mini-Elf64 Parser?
I bundle my preferred tools together in a standalone compiler toolkit for Windows: w64devkit. Except Git and documentation (see the links in the README), that's essentially everything I need to be productive.
- Assume I'm an idiot - oogabooga LLaMa.cpp??!
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Build a GCC 13 compiler from source for Windows 10/11
I have a Dockerfile here that goes through all the steps bootstrapping a Mingw-w64 toolchain from source: https://github.com/skeeto/w64devkit
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Why is Swift so slow (timeout) in compiling this code?
FWIW, both GNU objcopy and GNU ld (including e.g. the XCOPY-deployable ones from w64devkit[1]) are perfectly capable[2] of turning binary data into MSVC-acceptable COFF files with start and end symbols, while Free Pascal, for example, straight up ships with a bin2obj tool; the MSVC toolset is the outlier here.
[1] https://github.com/skeeto/w64devkit
[2] https://www.devever.net/~hl/incbin
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Generic Binary Tree Delete Function Error
Sounds like an high priority issue to solve first. I distribute a toolchain that doesn't require installation and includes a debugger: w64devkit (see "Releases"). You can pluck out the gdb.exe since it's statically linked and doesn't depend on anything else in the kit.
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I've just finished to upgrade my raycaster game engine, adding multiplayer and more! Written from scratch in C and SDL2. GitHub in the comments :)
This particular case is a Windows program due to Winsock, and I happen to include all the above tools, except SDL2, a small Mingw-w64 distribution, w64devkit. So it doesn't take much!
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WinLibs: Standalone build of GCC and MinGW-w64 for Windows
Similar project providing slightly fewer tools: https://github.com/skeeto/w64devkit
What are some alternatives?
C++ Format - A modern formatting library
llvm-mingw - An LLVM/Clang/LLD based mingw-w64 toolchain
rust - Empowering everyone to build reliable and efficient software.
mingw-builds - Scripts for building the 32 and 64-bit MinGW-W64 compilers for Windows
format-benchmark - A collection of formatting benchmarks
cmake-init - The missing CMake project initializer
papers - ISO/IEC JTC1 SC22 WG21 paper scheduling and management
xschem - A schematic editor for VLSI/Asic/Analog custom designs, netlist backends for VHDL, Spice and Verilog. The tool is focused on hierarchy and parametric designs, to maximize circuit reuse.
rustc_codegen_gcc - libgccjit AOT codegen for rustc
mingw-builds-binaries - MinGW-W64 compiler binaries
firejail - Linux namespaces and seccomp-bpf sandbox
SCL_String - Public domain, header-only file to simplify the C programmer's life in their interaction with strings