[SPIRV] Support G_IS_FPCLASS (#148637) This commit adds custom legalization for G_IS_FPCLASS, corresponding to the @llvm.is.fpclass intrinsic. The lowering strategy is essentially copied and adjusted from the target-agnostic LegalizeHelper::lowerISFPCLASS legalization. The reason we can't just use that directly is that the series of instruction it expands to aren't logged in the SPIR-V backend's register/type book-keeping, leading to issues later on in the compilation process. As such the code introduced here was copied from the aforementioned helper method, with some notable changes: * Each new instruction's destination register must have a SPIR-V type registered to it. * Instead of a COPY from the floating-point type to integer, we issue a SPIR-V OpBitcast directly. The backend doesn't currently appear to handle bitcast-like COPYs. Fixes #72862
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.