commit	ff0623cd29545720177439c3e65df2e2ac07db87	[log] [tgz]
author	Simon Pilgrim <llvm-dev@redking.me.uk>	Thu May 31 15:47:17 2018 +0000
committer	Simon Pilgrim <llvm-dev@redking.me.uk>	Thu May 31 15:47:17 2018 +0000
tree	693e8e9d161c03424adc59f3743d53ba76f4657b
parent	c34395d889afed7d9e89ba33d26125dc96bfb240 [diff]

[X86][SSE] Recognise splat rotations and expand back to shift ops.

Noticed while fixing PR37426, for splat rotations (rotation by an uniform value) its better to just expand back to shift ops than performing as a general non-uniform rotation.

llvm-svn: 333661

llvm/lib/Target/X86/X86ISelLowering.cpp[diff]
llvm/test/CodeGen/X86/vector-rotate-128.ll[diff]
llvm/test/CodeGen/X86/vector-rotate-256.ll[diff]

3 files changed

tree: 693e8e9d161c03424adc59f3743d53ba76f4657b

clang/
clang-tools-extra/
compiler-rt/
debuginfo-tests/
libclc/
libcxx/
libcxxabi/
libunwind/
lld/
lldb/
llgo/
llvm/
openmp/
parallel-libs/
polly/
README.md

README.md

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.