Lakreite a44c15874d
[AMDGPU][CodeGen] Implement SimplifyDemandedBitsForTargetNode for readfirstlane. (#190009)
Propagate demanded bits through readfirstlane intrinsic in
AMDGPUISelLowering with SimplifyDemandedBitsForTargetNode
implementation.

This allows upstream zero/sign extensions to be eliminated when only a
subset of bits is used after the intrinsic.

Partially addresses #128390.
2026-04-03 14:30:47 +02:00
..
2026-04-02 17:13:02 -07:00

The LLVM Compiler Infrastructure
================================

This directory and its subdirectories contain source code for LLVM,
a toolkit for the construction of highly optimized compilers,
optimizers, and runtime environments.

LLVM is open source software. You may freely distribute it under the terms of
the license agreement found in LICENSE.txt.

Please see the documentation provided in docs/ for further
assistance with LLVM, and in particular docs/GettingStarted.rst for getting
started with LLVM and docs/README.txt for an overview of LLVM's
documentation setup.

If you are writing a package for LLVM, see docs/Packaging.rst for our
suggestions.