llvm dev - Oct 2010 - [LLVMdev] [LLVMDev] The Basic Register allocator

I was studying the basic register allocator, and I am wondering why
"LessSpillWeightPriority" priority was used over the greater weight.

- Thanks
Jeff Kunkel

On Oct 28, 2010, at 4:05 PM, Jeff Kunkel wrote:
> I was studying the basic register allocator, and I am wondering why
> "LessSpillWeightPriority" priority was used over the greater
weight.
Because the front of std::priority_queue is the largest element given the
ordering.

I understand the mechanics. I don't know why a lesser weight is better
than a greater weight.


On Thu, Oct 28, 2010 at 7:22 PM, Jakob Stoklund Olesen <stoklund at
2pi.dk> wrote:
>
> On Oct 28, 2010, at 4:05 PM, Jeff Kunkel wrote:
>
>> I was studying the basic register allocator, and I am wondering why
>> "LessSpillWeightPriority" priority was used over the greater
weight.
>
> Because the front of std::priority_queue is the largest element given the
ordering.
>
>
>