Displaying 3 results from an estimated 3 matches for "sfrs".
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2019 Nov 05
2
InlineSpiller - hoists leave virtual registers without live intervals
On Mon, Nov 4, 2019 at 12:18 PM Quentin Colombet <qcolombet at apple.com>
wrote:
> Hi Alex,
>
> Thanks for reporting this.
> Wei worked on the hoisting optimization.
>
> @Wei, could you work with Alex to see what is the problem.
>
> Cheers,
> -Quentin
>
> > On Nov 3, 2019, at 5:20 AM, via llvm-dev <llvm-dev at lists.llvm.org>
> wrote:
> >
2019 Jun 17
2
[InstCombine] addrspacecast assumed associative with gep
...ably an "abuse of mechanics" and definitely playing with fire, _however_ the target I'm working on has extensive bit operations for a subset of memory, including atomic test-and-set, etc. It's convenient to be able to pass around addresses of these bits, in particular for handling SFRs and interfacing with peripherals that require the use of these instructions. I know this could be handled with intrinsic functions (as with much in LLVM), however this removes the opportunity for globally allocating low cost atomic flags.
Modelled as address spaces, p0 and p<bit> would have...
2019 Jun 11
3
[InstCombine] addrspacecast assumed associative with gep
The following combine(-enabling transformation) makes me
uncomfortable:
gep(addrspacecast(gep p0) to p1)
addrspacecast(gep(gep p0)) to p1
It's applied at visitAddrSpaceCast in InstCombineCasts.cpp.
Before this, I'd always assumed address spaces were very much "user
domain". Datalayout even supports marking a space as "non-integral",
to designate that manipulation as