[mlir][Pass] Fix crash when applying a pass to an optional interface (#169262) Interfaces can be optional: whether an op implements an interface or not can depend on the state of the operation. ``` // An optional code block for adding additional "classof" logic. This can // be used to better enable "optional" interfaces, where an entity only // implements the interface if some dynamic characteristic holds. // `$_attr`/`$_op`/`$_type` may be used to refer to an instance of the // interface instance being checked. code extraClassOf = ""; ``` The current `Pass::canScheduleOn(RegisteredOperationName)` is insufficient. This commit adds an additional overload to inspect `Operation *`. This commit fixes a crash when scheduling an `InterfacePass` for an optional interface on an operation that does not actually implement the interface. This is a re-upload of #168499, which was reverted.
Welcome to the LLVM project!
This repository contains the source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and run-time environments.
The LLVM project has multiple components. The core of the project is itself called “LLVM”. This contains all of the tools, libraries, and header files needed to process intermediate representations and convert them into object files. Tools include an assembler, disassembler, bitcode analyzer, and bitcode optimizer.
C-like languages use the Clang frontend. This component compiles C, C++, Objective-C, and Objective-C++ code into LLVM bitcode -- and from there into object files, using LLVM.
Other components include: the libc++ C++ standard library, the LLD linker, and more.
Consult the Getting Started with LLVM page for information on building and running LLVM.
For information on how to contribute to the LLVM project, please take a look at the Contributing to LLVM guide.
Join the LLVM Discourse forums, Discord chat, LLVM Office Hours or Regular sync-ups.
The LLVM project has adopted a code of conduct for participants to all modes of communication within the project.