Displaying 5 results from an estimated 5 matches for "non_extload".
2015 Mar 04
2
[LLVMdev] ReduceLoadWidth, DAGCombiner and non 8bit loads/extloads question.
On Wed, Mar 4, 2015 at 10:49 AM, Ahmed Bougacha
<ahmed.bougacha at gmail.com> wrote:
> On Wed, Mar 4, 2015 at 10:26 AM, Ryan Taylor <ryta1203 at gmail.com> wrote:
>> Yes, it is breaking during the legalize phase, depending on which
>> TargetLowering callback method we use. For example, Custom will let it
>> through to instructions selection, which it breaks at the
2015 Mar 05
2
[LLVMdev] ReduceLoadWidth, DAGCombiner and non 8bit loads/extloads question.
...e the hardware does not support
> it).
>
> The EXT part is not bugging me, I suppose it's possible that the
> DAGCombiner could optimize to just an 8-bit load, but we've only seen this
> opt if it's going to an extload, this is why I keep mentioning it. 8 bit
> loads (NON_EXTLOAD) is also illegal on our machine. We do not support any
> type of load that is 8 bit. Does LLVM also feel that 8 bit NON_EXTLOAD
> should always be supported also? For example, the Legalize can expand an
> EXTLOAD to NON_EXTLOAD and EXT but that would not help either, since we
> don'...
2009 May 21
0
[LLVMdev] [PATCH] Add new phase to legalization to handle vector operations
On Wed, May 20, 2009 at 4:55 PM, Dan Gohman <gohman at apple.com> wrote:
> Can you explain why you chose the approach of using a new pass?
> I pictured removing LegalizeDAG's type legalization code would
> mostly consist of finding all the places that use TLI.getTypeAction
> and just deleting code for handling its Expand and Promote. Are you
> anticipating something more
2009 May 20
2
[LLVMdev] [PATCH] Add new phase to legalization to handle vector operations
On May 20, 2009, at 1:34 PM, Eli Friedman wrote:
> On Wed, May 20, 2009 at 1:19 PM, Eli Friedman
> <eli.friedman at gmail.com> wrote:
>
>> Per subject, this patch adding an additional pass to handle vector
>>
>> operations; the idea is that this allows removing the code from
>>
>> LegalizeDAG that handles illegal types, which should be a significant
2009 May 21
2
[LLVMdev] [PATCH] Add new phase to legalization to handle vector operations
...:EXTLOAD, dl, NVT, Tmp3, VAList, NULL, 0, VT);
- }
- // Remember that we legalized the chain.
- AddLegalizedOperand(Op.getValue(1), LegalizeOp(Result.getValue(1)));
- break;
-
- case ISD::LOAD: {
- LoadSDNode *LD = cast<LoadSDNode>(Node);
- ISD::LoadExtType ExtType = ISD::isNON_EXTLoad(Node)
- ? ISD::EXTLOAD : LD->getExtensionType();
- Result = DAG.getExtLoad(ExtType, dl, NVT,
- LD->getChain(), LD->getBasePtr(),
- LD->getSrcValue(), LD->getSrcValueOffset(),
- LD->getMemoryVT...