commit	17bb6f0755876354428e0b88926905ad6e631c1a	[log] [tgz]
author	Simon Pilgrim <llvm-dev@redking.me.uk>	Thu Feb 15 14:37:59 2018 +0000
committer	Simon Pilgrim <llvm-dev@redking.me.uk>	Thu Feb 15 14:37:59 2018 +0000
tree	3b9a5593da39064caa8f7d7b930f5e44048ff829
parent	23bc73b6263c77894785948c13e7a91416ec5783 [diff]

[X86][SSE] combineTruncateWithSat - use truncateVectorWithPACK to chain PACKUS vXi32-vXi8 saturated truncation

We can use PACKSS/PACKUS to saturate each stage of the chain: PACKSSDW down to [-32768,32767] and then PACKUSWB to [0,255].

llvm-svn: 325243

llvm/lib/Target/X86/X86ISelLowering.cpp[diff]
llvm/test/CodeGen/X86/vector-trunc-packus.ll[diff]

2 files changed

tree: 3b9a5593da39064caa8f7d7b930f5e44048ff829

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.