CppCon 2019: Matt Godbolt “Compiler Explorer: Behind The Scenes”

What people said

jiggawatts · 2021-07 · Recommendation

I recently watched the CppCon 2019 talk by Matt Godbolt "Compiler Explorer: Behind The Scenes"[1], and a cool feature he presented is the integrated LLVM Machine Code Analyser tool. If you look at the "timeline" and "resource" views of how a Zen 3 executes a typical assembly snippet, it is absolutely mind blowing. That beast of a CPU has so many resources it's just crazy. [1] [VIDEO]

Read the original HN comment ↗

flohofwoe · 2021-03 · Recommendation

There's a few nice hidden features presented in Matt Godbolt's talk here: [VIDEO] As for LLVM IR output, just use the right clang command line options: [LINK] Likewise for WASM: [LINK]

Read the original HN comment ↗

turtledragonfly · 2025-04 · Reference

> But I wonder how common the knowledge is these days ... In one sense, it is less common, as you imply (though perhaps it's more that the number of high-level programmers have ballooned, rather than that the low-level ones have shrunk). In another sense, it's more accessible than ever, with tools like godbolt[1][2], VMs, cool profilers that show you a heatmap overlaid on assembly instructions, etc. And embedded development, where those details matter more, is still going strong, with IoT devices and so forth. [1] part of a presentation on it, if you're not already familiar: [VIDEO] [2] the site itself: [LINK]

Read the original HN comment ↗