search for: greedyra

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2011 May 03
3
[LLVMdev] Greedy register allocation
On May 3, 2011, at 12:03 PM, David A. Greene wrote: >> >> I am working my way through the regressions, looking for things the >> allocator did wrong. Any help is appreciated, please file bugs if you >> find examples of stupid register allocation. > > Certainly. I would ask that we keep linearscan around, if possible, as > long as there are significant
2011 Jun 15
1
[LLVMdev] Is LLVM expressive enough to represent asynchronous exceptions?
...ll impact on compile time. Up to 10% for some passes. Much of the overhead is in isel, which doesn't make sense to me. We should get a speedup, but we may be suffering from extra DAG bloat for the copy nodes at block boundaries. The regalloc slowdown is also counterintuitive to me. But the way GreedyRA works today, I think the small blocks force it into a more exhaustive search for split points. This could be managed. I didn't notice a significant score change in either case, though that's not really what I was interested in. ** lencod trunk (unmodified) Program | GCCAS Bytecode LLC c...
2011 Jun 14
0
[LLVMdev] Is LLVM expressive enough to represent asynchronous exceptions?
Hi Andrew, > No. Duncan suggested that he could hitch a ride with us through France. The problem is, we're not driving to Spain at all and there doesn't appear to be any place to transfer. > > The point is, you're not going to be able to leverage most of a CFG-based optimizing compiler if don't use the CFG to express control flow. when Chris first came up with his
2011 Jun 13
8
[LLVMdev] Is LLVM expressive enough to represent asynchronous exceptions?
On Jun 13, 2011, at 12:29 AM, John McCall wrote: > > On Jun 12, 2011, at 11:24 PM, Bill Wendling wrote: > >> On Jun 12, 2011, at 4:40 PM, John McCall wrote: >> >>> On Jun 12, 2011, at 2:14 PM, Cameron Zwarich wrote: >>> >>>> On Jun 12, 2011, at 1:25 AM, Duncan Sands wrote: >>>> >>>>> Hi Sohail, >>>>>