Revert r209049 and r209065, "Add support for combining GEPs across PHI nodes"

It broke clang selfhosting even after r209065.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209067 91177308-0d34-0410-b5e6-96231b3b80d8
Reduce abuse of default values in the GlobalAlias constructor.

This is in preparation for adding an optional offset.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209073 91177308-0d34-0410-b5e6-96231b3b80d8
Handle ConstantAggregateZero when upgrading global_ctors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209075 91177308-0d34-0410-b5e6-96231b3b80d8
Use create methods since msvc doesn't handle delegating constructors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209076 91177308-0d34-0410-b5e6-96231b3b80d8
ARM: whitespace

Remove some whitespace.  NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209079 91177308-0d34-0410-b5e6-96231b3b80d8
Target: change member from reference to pointer

This is a preliminary step to help ease the construction of CallLoweringInfo.
Changing the construction to a chained function pattern requires that the
parameter be nullable.  However, rather than copying the vector, save a pointer
rather than the reference to permit a late binding of the arguments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209080 91177308-0d34-0410-b5e6-96231b3b80d8
Target: add support to build CallLoweringInfo

Rather than introducing an auxiliary CallLoweringInfoBuilder, add the methods to
do chained function construction directly to CallLoweringInfo.  This reduces the
monstrous 15-parameter constructor into a series of simpler (for some definition
of simpler) functions that control particular aspects of the call.  The old
interfaces can be completely removed once callers are moved to the new chained
constructor pattern.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209081 91177308-0d34-0410-b5e6-96231b3b80d8
Target: remove old constructors for CallLoweringInfo

This is mostly a mechanical change changing all the call sites to the newer
chained-function construction pattern.  This removes the horrible 15-parameter
constructor for the CallLoweringInfo in favour of setting properties of the call
via chained functions.  No functional change beyond the removal of the old
constructors are intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209082 91177308-0d34-0410-b5e6-96231b3b80d8
ARM: consolidate frame pointer register knowledge

Use the ARMBaseRegisterInfo to query the frame register.  The base register info
is aware of the frame register that is used for the frame pointer.  Use that to
determine the frame register rather than duplicating the knowledge.  Although,
the code path is slightly different in that it may return SP, that can only
occur if the frame pointer has been omitted in the machine function, which is
supposed to contain the desired value in that case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209084 91177308-0d34-0410-b5e6-96231b3b80d8
ARM: improve WoA ABI conformance for frame register

Windows on ARM uses R11 for the frame pointer even though the environment is a
pure Thumb-2, thumb-only environment.  Replicate this behaviour to improve
Windows ABI compatibility.  This register is used for fast stack walking, and
thus is part of the Windows ABI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209085 91177308-0d34-0410-b5e6-96231b3b80d8
Options: Use erase_if to remove Args from the list.

While there make getOption return a const reference so we don't have to put it
on the stack when calling methods on it. No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209088 91177308-0d34-0410-b5e6-96231b3b80d8
ARM: make libcall setup more table driven

Rather than create a series of function calls to setup the library calls, create
a table with the information and just use the table to drive the configuration
of the library calls.  This makes it easier to both inspect the list as well as
to modify it.  NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209089 91177308-0d34-0410-b5e6-96231b3b80d8
Use std::unique_ptr instead of OwningPtr in the MemoryBuffer unittests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209102 91177308-0d34-0410-b5e6-96231b3b80d8
Remove last uses of OwningPtr from llvm. As far as I can tell these method versions are not used by lldb, lld, or clang.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209103 91177308-0d34-0410-b5e6-96231b3b80d8
Whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209105 91177308-0d34-0410-b5e6-96231b3b80d8
Reformat blank lines.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209106 91177308-0d34-0410-b5e6-96231b3b80d8
Change the blend tests to AVX, not AVX2.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209107 91177308-0d34-0410-b5e6-96231b3b80d8
Added inst-combine for 'MIN(MIN(A, 97), 23)' and 'MAX(MAX(A, 23), 97)'

This removes TODO added in r208849 [http://reviews.llvm.org/D3629]

MIN(MIN(A, 97), 23) -> MIN(A, 23)
MAX(MAX(A, 23), 97) -> MAX(A, 97)

Differential Revision: http://reviews.llvm.org/D3785



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209110 91177308-0d34-0410-b5e6-96231b3b80d8
Merge branch 'master' into master-si-spill-fixes-v4