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Compiler Explorer
Or the 'Matt Godbolt shows us some compiler magic' edition!
Just enter the source code in the pane on the left and the site will immediately show you the compiled output - typically assembly language - in a panel on the right. CE supports sixty-nine source languages, over two thousand compilers, and a wide range of target architectures including x86, arm, risc-v, avr, mips, vax, tensa, 68k, PowerPC, SPARC, and even the venerable 6502. The whole interview with Matt is worth a listen (links to Spotify, YouTube, and Apple Podcasts) as it’s full of interesting discussions of architecture, computer history, and, right at the end, CE.
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