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* The Grand Reformat - everything made prettier...literally - some tweaks to include a few more files, including documentation - minor changes to format style - some tiny `// prettier-ignore` changes to keep a few things the way we like them - a couple of super minor tweaks to embedded document types to ensure they format correctly
49 lines
2.3 KiB
Markdown
49 lines
2.3 KiB
Markdown
# How do I ?
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This is a how-to guide for the user-interface presented by [Compiler Explorer](https://godbolt.org). This doesn't cover
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the details of how to set up or modify Compiler Explorer for your own needs. For that, please check the documents which
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already cover topics like:
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- [Adding a language](AddingALanguage.md)
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- [Adding a compiler](AddingACompiler.md)
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- [Adding a library](AddingALibrary.md)
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- [Adding a tool](AddingATool.md)
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- and many more at [compiler-explorer/docs](https://github.com/compiler-explorer/compiler-explorer/tree/main/docs)
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Fast links:
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- [How do I ?](#how-do-i-)
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- [Change the assembly syntax from Intel](#change-the-assembly-syntax-from-intel)
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- [Compare the time taken by compilation and networking](#compare-the-time-taken-by-compilation-and-networking)
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- [View intermediate information provided by the compilers](#view-intermediate-information-provided-by-the-compilers)
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## Change the assembly syntax from Intel
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The option to switch assembly from Intel to AT&T syntax is present in the `Output` option of each compiler. If enough
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space is not present, the option also presents itself as the gear symbol (⚙)
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## Compare the time taken by compilation and networking
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This is the symbol that looks like a bar graph (📊). If your compilations are taking long, you can use this to check the
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time taken by:
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- Networking, JavaScript, waiting for events, etc.
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- Checking the cache and retrieving from it on a cache-hit
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- Compilation (on force compilation or cache-miss)
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- Parsing the generated assembly before presenting it
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## View intermediate information provided by the compilers
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Though both GCC and Clang create supplementary outputs along with assembly (shown by default), and an executable
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(created if an executor has been added), the exact nature of the outputs and their formats differ between the compilers.
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GCC allows the Tree, IPA, RTL and graph outputs, while Clang allows optimization, AST, IR and graph outputs. Some
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outputs (e.g. RTL or graph) also have a rich set of options in the UI to enable focussing on a particular function or
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compiler stage.
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