Revert r155136 "Defer some shl transforms to DAGCombine."

While the patch was perfect and defect free, it exposed a really nasty
bug in X86 SelectionDAG that caused an llc crash when compiling lencod.

I'll put the patch back in after fixing the SelectionDAG problem.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155181 91177308-0d34-0410-b5e6-96231b3b80d8
Convert some uses of XXXRegisterClass to &XXXRegClass. No functional change since they are equivalent.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155186 91177308-0d34-0410-b5e6-96231b3b80d8
Convert more uses of XXXRegisterClass to &XXXRegClass. No functional change since they are equivalent.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155188 91177308-0d34-0410-b5e6-96231b3b80d8
fix obviously bogus (IMO) operand index of the load in asserts
(load only has one operand) and smuggle in some whitespace changes too

NB: I am obviously testing the water here, and believe that the unguarded
    cast is still wrong, but why is the getZExtValue of the load's operand
    tested against zero here? Any review is appreciated.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155190 91177308-0d34-0410-b5e6-96231b3b80d8
effectively back out my last change (r155190)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155195 91177308-0d34-0410-b5e6-96231b3b80d8
Removes json-bench from the test dependencies.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155197 91177308-0d34-0410-b5e6-96231b3b80d8
[docs] Remove spurious or unused images.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155199 91177308-0d34-0410-b5e6-96231b3b80d8
Correct spelling, q.v. http://en.wikipedia.org/wiki/Bourne_shell

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155202 91177308-0d34-0410-b5e6-96231b3b80d8
Add documentation comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155203 91177308-0d34-0410-b5e6-96231b3b80d8
LLVM docs no longer contain images, don't try to install them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155206 91177308-0d34-0410-b5e6-96231b3b80d8
[docs] Update Makefile for images removal.
 - Also, drop the lines.gif background from doxygen, this URL was wrong on the
   llvm.org server anyway.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155208 91177308-0d34-0410-b5e6-96231b3b80d8
Add debugging hints for when bugpoint does not suffice, specifically for instcombine and TargetLowering

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155209 91177308-0d34-0410-b5e6-96231b3b80d8
ARM: Update NEON assembly two-operand aliases.

Use the new TwoOperandAliasConstraint to handle lots of the two-operand aliases
for NEON instructions. There's still more to go, but this is a good chunk of
them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155210 91177308-0d34-0410-b5e6-96231b3b80d8
Kick off 3.2 cycle for LLVM trunk.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155211 91177308-0d34-0410-b5e6-96231b3b80d8
Fix broken internal link.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155213 91177308-0d34-0410-b5e6-96231b3b80d8
[docs] Update version number. I suggest that at some point we make the
build system generate this file with the proper version.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155221 91177308-0d34-0410-b5e6-96231b3b80d8
Allow converting MachineBasicBlock::iterator to const_iterator.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155225 91177308-0d34-0410-b5e6-96231b3b80d8
misched: initialize BB

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155226 91177308-0d34-0410-b5e6-96231b3b80d8
SparseSet: Add support for key-derived indexes and arbitrary key types.

This nicely handles the most common case of virtual register sets, but
also handles anticipated cases where we will map pointers to IDs.

The goal is not to develop a completely generic SparseSet
template. Instead we want to handle the expected uses within llvm
without any template antics in the client code. I'm adding a bit of
template nastiness here, and some assumption about expected usage in
order to make the client code very clean.

The expected common uses cases I'm designing for:
- integer keys that need to be reindexed, and may map to additional
  data
- densely numbered objects where we want pointer keys because no
  number->object map exists.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155227 91177308-0d34-0410-b5e6-96231b3b80d8
New and improved comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155229 91177308-0d34-0410-b5e6-96231b3b80d8