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Add nullptr checks for TargetSelectionDAGInfo in SelectionDAG.

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TSI is not guaranteed be non-null in SelectionDAG.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227397 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Manuel Jacob 2015-01-28 23:50:40 +00:00
parent 1f3043175c
commit c8d6db0fc0
1 changed files with 19 additions and 13 deletions
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32
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
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@ -4272,11 +4272,13 @@ SDValue SelectionDAG::getMemcpy(SDValue Chain, SDLoc dl, SDValue Dst,
// Then check to see if we should lower the memcpy with target-specific
// code. If the target chooses to do this, this is the next best.
SDValue Result =
TSI->EmitTargetCodeForMemcpy(*this, dl, Chain, Dst, Src, Size, Align,
isVol, AlwaysInline, DstPtrInfo, SrcPtrInfo);
if (Result.getNode())
return Result;
if (TSI) {
SDValue Result = TSI->EmitTargetCodeForMemcpy(
*this, dl, Chain, Dst, Src, Size, Align, isVol, AlwaysInline,
DstPtrInfo, SrcPtrInfo);
if (Result.getNode())
return Result;
}
// If we really need inline code and the target declined to provide it,
// use a (potentially long) sequence of loads and stores.
@ -4338,10 +4340,12 @@ SDValue SelectionDAG::getMemmove(SDValue Chain, SDLoc dl, SDValue Dst,
// Then check to see if we should lower the memmove with target-specific
// code. If the target chooses to do this, this is the next best.
SDValue Result = TSI->EmitTargetCodeForMemmove(
*this, dl, Chain, Dst, Src, Size, Align, isVol, DstPtrInfo, SrcPtrInfo);
if (Result.getNode())
return Result;
if (TSI) {
SDValue Result = TSI->EmitTargetCodeForMemmove(
*this, dl, Chain, Dst, Src, Size, Align, isVol, DstPtrInfo, SrcPtrInfo);
if (Result.getNode())
return Result;
}
// FIXME: If the memmove is volatile, lowering it to plain libc memmove may
// not be safe. See memcpy above for more details.
@ -4390,10 +4394,12 @@ SDValue SelectionDAG::getMemset(SDValue Chain, SDLoc dl, SDValue Dst,
// Then check to see if we should lower the memset with target-specific
// code. If the target chooses to do this, this is the next best.
SDValue Result = TSI->EmitTargetCodeForMemset(*this, dl, Chain, Dst, Src,
Size, Align, isVol, DstPtrInfo);
if (Result.getNode())
return Result;
if (TSI) {
SDValue Result = TSI->EmitTargetCodeForMemset(
*this, dl, Chain, Dst, Src, Size, Align, isVol, DstPtrInfo);
if (Result.getNode())
return Result;
}
// Emit a library call.
Type *IntPtrTy = TLI->getDataLayout()->getIntPtrType(*getContext());