Daniel Cederman 8f0bf6c19a [Sparc] Use ANDN instead of AND if constant can be encoded more efficiently
Summary:
In the case of (and reg, constant) or (or reg, constant), it can be
beneficial to use a ANDNrr/ORNrr instruction instead of ANDrr/ORrr,
if the complement of the constant can be encoded using a single SETHI
instruction instead of a SETHI/ORri pair.

If the constant has more than one use, it is probably better to keep it
in its original form.

Reviewers: jyknight, venkatra

Reviewed By: jyknight

Subscribers: fedor.sergeev, jrtc27, llvm-commits

Differential Revision: https://reviews.llvm.org/D50964

llvm-svn: 341069
2018-08-30 14:05:26 +00:00
2018-08-16 16:55:07 +00:00
2018-06-18 12:22:17 +00:00

Low Level Virtual Machine (LLVM)

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

Description
The LLVM Project is a collection of modular and reusable compiler and toolchain technologies.
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