Add OPC_CheckChildSame0-3 to the DAG isel matcher. This replaces sequences of MoveChild, CheckSame, MoveParent. Saves 846 bytes from the X86 DAG isel matcher, ~300 from ARM, ~840 from Hexagon.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191940 91177308-0d34-0410-b5e6-96231b3b80d8
Revert r191940 to see if it fixes the build bots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191941 91177308-0d34-0410-b5e6-96231b3b80d8
Test commit to check e-mail address. Please discard this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191942 91177308-0d34-0410-b5e6-96231b3b80d8
Implement aarch64 neon instruction set AdvSIMD (3V elem).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191944 91177308-0d34-0410-b5e6-96231b3b80d8
Restore LLVM_BUILD_RUNTIME option that was deleted in r191835, but is still used to control building of compiler-rt and libcxx

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191948 91177308-0d34-0410-b5e6-96231b3b80d8