Displaying 2 results from an estimated 2 matches for "llvm_dragonegg".
2017 Sep 12
2
Register pressure calculation in the machine scheduler and live-through registers
...rrently using and then doing a direct comparison between selection DAG scheduling and machine scheduling in the same version of the code.
As for live-through information, we found that the machine scheduler does call initLiveThru() and here is a pointer to the code:
https://gitlab.com/CSUS_LLVM/LLVM_DRAGONEGG/blob/master/Generic/llvmTip/llvm-master/lib/CodeGen/MachineScheduler.cpp#L921
And here is a pointer to the function initLiveThru()
https://gitlab.com/CSUS_LLVM/LLVM_DRAGONEGG/blob/master/Generic/llvmTip/llvm-master/lib/CodeGen/RegisterPressure.cpp#L318
Thanks
Ghassan Shobaki
Assistant Prof...
2017 Aug 30
2
Register pressure calculation in the machine scheduler and live-through registers
> On Aug 30, 2017, at 1:43 PM, Matthias Braun <matze at braunis.de> wrote:
>
> That means you cannot use the code from RegisterPressure.{cpp|h} to compute this. The other liveness analysis we have in llvm codegen is LiveIntervals (LiveItnervalAnalysis) which gives you a list of liveness segments of a given vreg (the same representation is used in most linear scan allocators even