mirror of git://gcc.gnu.org/git/gcc.git
58 lines
2.1 KiB
Plaintext
58 lines
2.1 KiB
Plaintext
See ../README.
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The frontend is written in C++.
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The frontend lexes and parses the input into an IR specific to this
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frontend known as gogo. It then runs a series of passes over the
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code.
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Finally it converts gogo to gcc's GENERIC. A goal is to move the gcc
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support code into a gcc-interface subdirectory. The gcc code will be
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put under the GPL. The rest of the frontend will not include any gcc
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header files.
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Issues to be faced in this transition:
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* Representation of source locations.
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+ Currently the frontend uses gcc's source_location codes, using the
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interface in libcpp/line-map.h.
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* Handling of error messages.
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+ Currently the frontend uses gcc's error_at and warning_at
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functions.
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+ Currently the frontend uses gcc's diagnostic formatter, using
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features such as %<%> for appropriate quoting.
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+ Localization may be an issue.
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* Use of gcc_assert and gcc_unreachable.
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This compiler works, but the code is a work in progress. Notably, the
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support for garbage collection is ineffective and needs a complete
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rethinking. The frontend pays little attention to its memory usage
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and rarely frees any memory. The code could use a general cleanup
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which we have not had time to do.
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Contributing
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=============
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To contribute patches to the files in this directory, please see
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http://golang.org/doc/gccgo_contribute.html .
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Changes to these files require a copyright assignment to Google. This
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is required to permit the changes to be copied to the gcc repository,
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as Google has a copyright assignment with the Free Software
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Foundation.
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If you are the copyright holder, you will need to agree to the
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individual contributor license agreement at
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http://code.google.com/legal/individual-cla-v1.0.html. This agreement
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can be completed online.
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If your organization is the copyright holder, the organization will
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need to agree to the corporate contributor license agreement at
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http://code.google.com/legal/corporate-cla-v1.0.html.
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If the copyright holder for your code has already completed the
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agreement in connection with another Google open source project, it
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does not need to be completed again.
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