Displaying 5 results from an estimated 5 matches for "getvtaction".
2008 Oct 02
1
[LLVMdev] Type Legalizer Question.
...s at least some basic operations, like add,
> >>> to
> >>> be legal in legal register types.
> >>
> >> That sounds like a bug, not a feature.
> >> -Chris
> >
> > The -enable-legalize-types infrastructure is entirely based upon
> > getVTAction (), so it will be completely ignored once we have i16
> > regclass,
>
> I suspected that. But I wonder if that's going to be the approach or
> is this something we want to change.
>
Even after VT is legal, is it possible to check if the target still
wants the result of this...
2008 Oct 02
2
[LLVMdev] Type Legalizer Question.
...ot;expand". Would that work?
> >
> > Won't work; LLVM expects at least some basic operations, like add, to
> > be legal in legal register types.
>
> That sounds like a bug, not a feature.
> -Chris
The -enable-legalize-types infrastructure is entirely based upon
getVTAction (), so it will be completely ignored once we have i16
regclass,
ditto with ExpandOp of LegalizeDAG.
And LegalizeDAG::LegalizeOp() allows very few things to be auto expanded.
-Sanjiv
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu...
2008 Oct 02
0
[LLVMdev] Type Legalizer Question.
...t;>> Won't work; LLVM expects at least some basic operations, like add,
>>> to
>>> be legal in legal register types.
>>
>> That sounds like a bug, not a feature.
>> -Chris
>
> The -enable-legalize-types infrastructure is entirely based upon
> getVTAction (), so it will be completely ignored once we have i16
> regclass,
I suspected that. But I wonder if that's going to be the approach or
is this something we want to change.
>
> ditto with ExpandOp of LegalizeDAG.
> And LegalizeDAG::LegalizeOp() allows very few things to be auto...
2008 Oct 02
0
[LLVMdev] Type Legalizer Question.
On Oct 2, 2008, at 8:38 AM, Eli Friedman wrote:
> On Thu, Oct 2, 2008 at 7:34 AM, Evan Cheng <evan.cheng at apple.com>
> wrote:
>>
>> On Oct 2, 2008, at 2:01 AM, sanjiv gupta wrote:
>>
>>>
>>>>
>>>> So you have a i16 register class which makes the type legal. You
>>>> can
>>>> make loads and stores legal
2008 Oct 02
3
[LLVMdev] Type Legalizer Question.
On Thu, Oct 2, 2008 at 7:34 AM, Evan Cheng <evan.cheng at apple.com> wrote:
>
> On Oct 2, 2008, at 2:01 AM, sanjiv gupta wrote:
>
>>
>>>
>>> So you have a i16 register class which makes the type legal. You can
>>> make loads and stores legal (can you?). But you will have to custom
>>> lower all other i16 operations. This will work, but it