Update the docs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187713 91177308-0d34-0410-b5e6-96231b3b80d8
Update the release notes about the status of the vectorizers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187714 91177308-0d34-0410-b5e6-96231b3b80d8
AVX-512 set: added mask operations, lowering BUILD_VECTOR for i1 vector types.
Added intrinsics and tests.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187717 91177308-0d34-0410-b5e6-96231b3b80d8
[SystemZ] Split out comparison elimination into a separate pass

Perhaps predictably, doing comparison elimination on the fly during
SystemZLongBranch turned out to be a bad idea.  The next patches make
use of LOAD AND TEST and BRANCH ON COUNT, both of which require
changes to earlier instructions.

No functionality change intended.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187718 91177308-0d34-0410-b5e6-96231b3b80d8
[SystemZ] Add LOAD AND TEST instructions

Just the definitions and MC support.  The next patch uses them for codegen.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187719 91177308-0d34-0410-b5e6-96231b3b80d8
[SystemZ] Use LOAD AND TEST to eliminate comparisons against zero


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187720 91177308-0d34-0410-b5e6-96231b3b80d8
[SystemZ] Add definitions for BRCT and BRCTG


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187721 91177308-0d34-0410-b5e6-96231b3b80d8
Don't leak passes if added outside of the area determined by Started/Stopped flags.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187722 91177308-0d34-0410-b5e6-96231b3b80d8
[SystemZ] Use BRCT and BRCTG to eliminate add-&-compare sequences

This patch just uses a peephole test for "add; compare; branch" sequences
within a single block.  The IR optimizers already convert loops to
decrement-and-branch-on-nonzero form in some cases, so even this
simplistic test triggers many times during a clang bootstrap and
projects/test-suite run.  It looks like there are still cases where we
need to more strongly prefer branches on nonzero though.  E.g. I saw a
case where a loop that started out with a check for 0 ended up with a
check for -1.  I'll try to look at that sometime.

I ended up adding the Reference class because MachineInstr::readsRegister()
doesn't check for subregisters (by design, as far as I could tell).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187723 91177308-0d34-0410-b5e6-96231b3b80d8
LLVM Interpreter: This patch implements vector support for cast operations (zext, sext, uitofp, sitofp, trunc, fpext, fptosi, fptrunc, bitcast) and shift operations (shl, ashr, lshr) for integer and floating point data types.
Added tests.

Done by Yuri Veselov (mailto:Yuri.Veselov@intel.com).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187724 91177308-0d34-0410-b5e6-96231b3b80d8