[llvm-commits] [llvm] r117174 - in /llvm/trunk: include/llvm/CodeGen/LinkAllCodegenComponents.h include/llvm/CodeGen/Passes.h lib/CodeGen/CMakeLists.txt lib/CodeGen/LiveIntervalUnion.cpp lib/CodeGen/LiveIntervalUnion.h lib/CodeGen/RegAllocBase.h

[Eli Friedman]

On Fri, Oct 22, 2010 at 4:42 PM, Evan Cheng <evan.cheng at apple.com> wrote:
>
> On Oct 22, 2010, at 4:35 PM, Eli Friedman wrote:
>
>> On Fri, Oct 22, 2010 at 4:09 PM, Andrew Trick <atrick at apple.com> wrote:
>>> Author: atrick
>>> Date: Fri Oct 22 18:09:15 2010
>>> New Revision: 117174
>>>
>>> URL: http://llvm.org/viewvc/llvm-project?rev=117174&view=rev
>>> Log:
>>> This is a prototype of an experimental register allocation
>>> framework. It's purpose is not to improve register allocation per se,
>>> but to make it easier to develop powerful live range splitting. I call
>>> it the basic allocator because it is as simple as a global allocator
>>> can be but provides the building blocks for sophisticated register
>>> allocation with live range splitting.
>>>
>>> A minimal implementation is provided that trivially spills whenever it
>>> runs out of registers. I'm checking in now to get high-level design
>>> and style feedback. I've only done minimal testing. The next step is
>>> implementing a "greedy" allocation algorithm that does some register
>>> reassignment and makes better splitting decisions.
>>
>> Per the commit guidelines, new features shouldn't be committed without
>> discussion; please revert.
>
> Eli, we have discussed this and I've ok'ed the commit.

Okay.

-Eli