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[mlir][OpFormatGen] Add support for specifiy "custom" directives.

Authored by rriddle on Jul 27 2020, 6:57 PM.



This revision adds support for custom directives to the declarative assembly format. This allows for users to use C++ for printing and parsing subsections of an otherwise declaratively specified format. The custom directive is structured as follows:

custom-directive ::= `custom` `<` UserDirective `>` `(` Params `)`

UserDirective is used as a suffix when this directive is used during printing and parsing. When parsing, parseUserDirective will be invoked. When printing, printUserDirective will be invoked. The first parameter to these methods must be a reference to either the OpAsmParser, or OpAsmPrinter. The type of rest of the parameters is dependent on the Params specified in the assembly format.

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Event Timeline

rriddle created this revision.Jul 27 2020, 6:57 PM
Herald added a project: Restricted Project. · View Herald TranscriptJul 27 2020, 6:57 PM
rriddle edited the summary of this revision. (Show Details)Jul 27 2020, 7:06 PM

Just saw this in the weekly newsletter - this is really really really cool, nice work!

jpienaar accepted this revision.Aug 27 2020, 8:11 PM


This revision is now accepted and ready to land.Aug 27 2020, 8:11 PM
mehdi_amini accepted this revision.Aug 27 2020, 9:39 PM





Should this be folded in the previous bullet?

rriddle updated this revision to Diff 288721.Aug 28 2020, 3:48 PM
rriddle marked 2 inline comments as done.

Address comments

This revision was landed with ongoing or failed builds.Aug 31 2020, 1:27 PM
This revision was automatically updated to reflect the committed changes.