commit	138960770c9b6d2ebaf6d42814ce69e25679cf08	[log] [tgz]
author	Jonas Paulsson <paulsson@linux.vnet.ibm.com>	Sat Mar 17 08:32:12 2018 +0000
committer	Jonas Paulsson <paulsson@linux.vnet.ibm.com>	Sat Mar 17 08:32:12 2018 +0000
tree	69ddd03eb86e38075d4a4d11bf27a47d5e0147b5
parent	e9f7fa83d54cbb77e48b26685433a6777f613017 [diff]

[SystemZ]  computeKnownBitsForTargetNode() / ComputeNumSignBitsForTargetNode()

Improve/implement these methods to improve DAG combining. This mainly
concerns intrinsics.

Some constant operands to SystemZISD nodes have been marked Opaque to avoid
transforming back and forth between generic and target nodes infinitely.

Review: Ulrich Weigand
llvm-svn: 327765

llvm/lib/Target/SystemZ/SystemZISelLowering.cpp[diff]
llvm/lib/Target/SystemZ/SystemZISelLowering.h[diff]
llvm/test/CodeGen/SystemZ/knownbits-intrinsics-binop.ll[Added - diff]
llvm/test/CodeGen/SystemZ/knownbits-intrinsics-unpack.ll[Added - diff]
llvm/test/CodeGen/SystemZ/knownbits.ll[Added - diff]
llvm/test/CodeGen/SystemZ/signbits-intrinsics-binop.ll[Added - diff]
llvm/test/CodeGen/SystemZ/signbits-intrinsics-unpack.ll[Added - diff]
llvm/test/CodeGen/SystemZ/signbits.ll[Added - diff]
llvm/test/CodeGen/SystemZ/vec-trunc-to-i1.ll[diff]

9 files changed

tree: 69ddd03eb86e38075d4a4d11bf27a47d5e0147b5

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.