ISD::LoadExtType Ext = Ld->getExtensionType();
unsigned Alignment = Ld->getAlignment();
+ bool IsAligned = Alignment == 0 || Alignment == MemVT.getSizeInBits()/8;
// On Sandybridge unaligned 256bit loads are inefficient.
if (RegVT.is256BitVector() && !Subtarget->hasInt256() &&
- !DCI.isBeforeLegalizeOps() && Alignment < 32 &&
- Ext == ISD::NON_EXTLOAD) {
+ !DCI.isBeforeLegalizeOps() && !IsAligned && Ext == ISD::NON_EXTLOAD) {
unsigned NumElems = RegVT.getVectorNumElements();
+ if (NumElems < 2)
+ return SDValue();
+
SDValue Ptr = Ld->getBasePtr();
SDValue Increment = DAG.getConstant(16, TLI.getPointerTy());
SDValue Load2 = DAG.getLoad(HalfVT, dl, Ld->getChain(), Ptr,
Ld->getPointerInfo(), Ld->isVolatile(),
Ld->isNonTemporal(), Ld->isInvariant(),
- Alignment);
+ std::max(Alignment/2U, 1U));
SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
Load1.getValue(1),
Load2.getValue(1));
DebugLoc dl = St->getDebugLoc();
SDValue StoredVal = St->getOperand(1);
const TargetLowering &TLI = DAG.getTargetLoweringInfo();
+ unsigned Alignment = St->getAlignment();
+ bool IsAligned = Alignment == 0 || Alignment == VT.getSizeInBits()/8;
// If we are saving a concatenation of two XMM registers, perform two stores.
// On Sandy Bridge, 256-bit memory operations are executed by two
// 128-bit ports. However, on Haswell it is better to issue a single 256-bit
// memory operation.
if (VT.is256BitVector() && !Subtarget->hasInt256() &&
- StoredVal.getNode()->getOpcode() == ISD::CONCAT_VECTORS &&
- StoredVal.getNumOperands() == 2) {
- SDValue Value0 = StoredVal.getOperand(0);
- SDValue Value1 = StoredVal.getOperand(1);
+ StVT == VT && !IsAligned) {
+ unsigned NumElems = VT.getVectorNumElements();
+ if (NumElems < 2)
+ return SDValue();
+
+ SDValue Value0 = Extract128BitVector(StoredVal, 0, DAG, dl);
+ SDValue Value1 = Extract128BitVector(StoredVal, NumElems/2, DAG, dl);
SDValue Stride = DAG.getConstant(16, TLI.getPointerTy());
SDValue Ptr0 = St->getBasePtr();
SDValue Ch0 = DAG.getStore(St->getChain(), dl, Value0, Ptr0,
St->getPointerInfo(), St->isVolatile(),
- St->isNonTemporal(), St->getAlignment());
+ St->isNonTemporal(), Alignment);
SDValue Ch1 = DAG.getStore(St->getChain(), dl, Value1, Ptr1,
St->getPointerInfo(), St->isVolatile(),
- St->isNonTemporal(), St->getAlignment());
+ St->isNonTemporal(),
+ std::max(Alignment/2U, 1U));
return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Ch0, Ch1);
}