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Added invariant field to the DAG.getLoad method and changed all calls.

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When this field is true it means that the load is from constant (runt-time or compile-time) and so can be hoisted from loops or moved around other memory accesses


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144100 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Pete Cooper
2011-11-08 18:42:53 +00:00
parent 30b4d8b83b
commit d752e0f7e6
26 changed files with 253 additions and 202 deletions
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2
lib/CodeGen/SelectionDAG/TargetLowering.cpp
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@ -2060,7 +2060,7 @@ TargetLowering::SimplifySetCC(EVT VT, SDValue N0, SDValue N1,
unsigned NewAlign = MinAlign(Lod->getAlignment(), bestOffset);
SDValue NewLoad = DAG.getLoad(newVT, dl, Lod->getChain(), Ptr,
Lod->getPointerInfo().getWithOffset(bestOffset),
false, false, NewAlign);
false, false, false, NewAlign);
return DAG.getSetCC(dl, VT,
DAG.getNode(ISD::AND, dl, newVT, NewLoad,
DAG.getConstant(bestMask.trunc(bestWidth),