[LLVMdev] Splitting a load with 2 consumers into 2 loads.

[Joseph Pusdesris]

So I think I have made some progress.
SDValue dupVal  = consumer->getOperand(OpNo);
LoadSDNode *dupNode = (LoadSDNode*) dupVal.getNode();

SDValue newLoad = CurDAG->getLoad(dupVal.getValueType(),
dupVal.getDebugLoc(),
                               dupVal.getOperand(0), dupVal.getOperand(1),
                               dupNode->getPointerInfo(),
                               dupNode->isVolatile(),
dupNode->isNonTemporal(),
                               dupNode->isInvariant(),
dupNode->getAlignment(),
                               dupNode->getTBAAInfo(),
dupNode->getRanges());
However, my problem now is that it will re-use the same load still.  If I
change something, like setting volatile to true for example, it will create
a new node, but otherwise it will not.  Any ideas?
-Joe


On Fri, Nov 30, 2012 at 9:55 PM, Joseph Pusdesris <joe at pusdesris.com> wrote:

> Hi, I am writing an llvm target and I need both loads for isel
> reasons, but I am struggling to find the right way.  I have been trying to
> use DAG.getLoad() to make a copy, then just change the operand in the
> consumers, but I cannot seem to get all of the arguments needed for that
> function in order to make the copy.  Any help would be great, thanks!
> -Joe
>
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