[RISCV] Fix incorrect slide offset when using vnsrl to de-interleave (#132123) Given this shuffle: ``` shufflevector <8 x i8> %0, <8 x i8> %1, <8 x i32> <i32 0, i32 4, i32 8, i32 12, i32 undef, i32 undef, i32 undef, i32 undef> ``` #127272 lowers it with a bunch of vnsrl. If we describe the result in terms of the shuffle mask, we expect: ``` <0, 4, 8, 12, u, u, u, u> ``` but we actually got: ``` <0, 4, u, u, 8, 12, u, u> ``` for factor larger than 2. This is caused by `CONCAT_VECTORS` on incorrect (sub) vector types. This patch fixes the said issue by building an aggregate vector with the correct sub vector types. Fix #132071
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.