[Allocator] Factor the Allocate template overloads into a base class
rather than defining them (differently!) in both allocators. This also
serves as a basis for documenting and even enforcing some of the
LLVM-style "allocator" concept methods which must exist with various
signatures.

I plan on extending and changing the signatures of these to further
simplify our allocator model in subsequent commits, so I wanted to
factor things as best as I could first. Notably, I'm working to add the
'Size' to the deallocation method of all allocators. This has several
implications not the least of which are faster deallocation times on
certain allocation libraries (tcmalloc). It also will allow the JIT
allocator to fully model the existing allocation interfaces and allow
sanitizer poisoning of deallocated regions. The list of advantages goes
on. =] But by factoring things first I'll be able to make this easier by
first introducing template helpers for the deallocation path.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206225 91177308-0d34-0410-b5e6-96231b3b80d8
[Allocator] Hack around the fact that GCC can't compile the
static_assert added in r206225. I'm looking into a proper fix, but
wanted the bots back.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206226 91177308-0d34-0410-b5e6-96231b3b80d8
[ARM64][MC] Set the default CPU string to generic.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206228 91177308-0d34-0410-b5e6-96231b3b80d8
[Allocator] Add Deallocate support to the AllocatorBase CRTP class,
along with templated overloads much like we have for Allocate. These
will facilitate switching the Deallocate interface of all the Allocator
classes to accept the size by pre-filling it from the type size where we
can do so. I plan to convert several uses to the template variants in
subsequent patches prior to adding the Size parameter.

No functionality changed, WIP.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206230 91177308-0d34-0410-b5e6-96231b3b80d8
[Register Coalescer] Add a test case for 206060.

<rdar://problem/16582185>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206235 91177308-0d34-0410-b5e6-96231b3b80d8
[MC] Emit an error if cfi_startproc is used before a symbol is defined.
Currently, we bind those directives with the last symbol, so if none
has been defined, this would lead to a crash of the compiler.

<rdar://problem/15939159>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206236 91177308-0d34-0410-b5e6-96231b3b80d8
Add iterator_range for MachineInstr defs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206238 91177308-0d34-0410-b5e6-96231b3b80d8
[ARM64,C++11]: Range'ify the dead-register-definition pass.

Range-based for loops. No functional change intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206239 91177308-0d34-0410-b5e6-96231b3b80d8
X86JITInfo: [x86] Use X86CompilationCallback_SSE() along;

  *not* Subtarget->hasSSE1()
  *but* __SSE__, the flag that LLVM libraries are compiled

The callback calls internal LLVM JIT libraries. It may be built with -msse (or above).

FIXME: JIT may use "host" instead of "generic" by default.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206240 91177308-0d34-0410-b5e6-96231b3b80d8
[MC] Require an MCContext when constructing an MCDisassembler.

This patch re-introduces the MCContext member that was removed from
MCDisassembler in r206063, and requires that an MCContext be passed in at
MCDisassembler construction time. (Previously the MCContext member had been
initialized in an ad-hoc fashion after construction). The MCCContext member
can be used by MCDisassembler sub-classes to construct constant or
target-specific MCExprs.

This patch updates disassemblers for in-tree targets, and provides the
MCRegisterInfo instance that some disassemblers were using through the
MCContext (previously those backends were constructing their own
MCRegisterInfo instances).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206241 91177308-0d34-0410-b5e6-96231b3b80d8
Use std::unique_ptr to manage MCBasicBlocks in MCFunction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206242 91177308-0d34-0410-b5e6-96231b3b80d8
[C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206243 91177308-0d34-0410-b5e6-96231b3b80d8
Use unique_ptr to own MCFunctions within MCModule.

MCModule's ctor had to be moved out of line so the definition of
MCFunction was available. (ctor requires the dtor of members (in case
the ctor throws) which required access to the dtor of MCFunction)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206244 91177308-0d34-0410-b5e6-96231b3b80d8
Use unique_ptr for section/segment ownership in WinCOFFObjectWriter

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206245 91177308-0d34-0410-b5e6-96231b3b80d8
Use unique_ptr to manage ownership of GCStrategy objects in GCMetadata

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206246 91177308-0d34-0410-b5e6-96231b3b80d8
Use unique_ptr for the result of Registry entries.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206248 91177308-0d34-0410-b5e6-96231b3b80d8
Use unique_ptr to manage ownership of GCFunctionInfos in GCStrategy

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206249 91177308-0d34-0410-b5e6-96231b3b80d8
Use unique_ptr to manage TypePromotionActions owned by TypePromotionTransaction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206250 91177308-0d34-0410-b5e6-96231b3b80d8
[Allocator] Constrain the Deallocate templated overloads to only apply
to types which we can compute the size of. The comparison with zero
isn't actually interesting here, it's mostly about putting sizeof into
a sfinae context.

This is particular important for Deallocate as otherwise the void*
overload can quickly become ambiguous.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206251 91177308-0d34-0410-b5e6-96231b3b80d8
[C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206252 91177308-0d34-0410-b5e6-96231b3b80d8