DAG, dl);
// Recreate the shift amount vectors
- SmallVector<SDValue, 4> Amt1Csts;
- SmallVector<SDValue, 4> Amt2Csts;
- for (int i = 0; i < NumElems/2; ++i)
- Amt1Csts.push_back(Amt->getOperand(i));
- for (int i = NumElems/2; i < NumElems; ++i)
- Amt2Csts.push_back(Amt->getOperand(i));
-
- SDValue Amt1 = DAG.getNode(ISD::BUILD_VECTOR, dl, NewVT,
- &Amt1Csts[0], NumElems/2);
- SDValue Amt2 = DAG.getNode(ISD::BUILD_VECTOR, dl, NewVT,
- &Amt2Csts[0], NumElems/2);
+ SDValue Amt1, Amt2;
+ if (Amt.getOpcode() == ISD::BUILD_VECTOR) {
+ // Constant shift amount
+ SmallVector<SDValue, 4> Amt1Csts;
+ SmallVector<SDValue, 4> Amt2Csts;
+ for (int i = 0; i < NumElems/2; ++i)
+ Amt1Csts.push_back(Amt->getOperand(i));
+ for (int i = NumElems/2; i < NumElems; ++i)
+ Amt2Csts.push_back(Amt->getOperand(i));
+
+ Amt1 = DAG.getNode(ISD::BUILD_VECTOR, dl, NewVT,
+ &Amt1Csts[0], NumElems/2);
+ Amt2 = DAG.getNode(ISD::BUILD_VECTOR, dl, NewVT,
+ &Amt2Csts[0], NumElems/2);
+ } else {
+ // Variable shift amount
+ Amt1 = Extract128BitVector(Amt, DAG.getConstant(0, MVT::i32), DAG, dl);
+ Amt2 = Extract128BitVector(Amt, DAG.getConstant(NumElems/2, MVT::i32),
+ DAG, dl);
+ }
// Issue new vector shifts for the smaller types
V1 = DAG.getNode(Op.getOpcode(), dl, NewVT, V1, Amt1);
ret <16 x i16> %s
}
+;;; Support variable shifts
+; CHECK: _vshift08
+; CHECK: vextractf128 $1
+; CHECK: vpslld $23
+; CHECK: vextractf128 $1
+; CHECK: vpslld $23
+define <8 x i32> @vshift08(<8 x i32> %a) nounwind {
+ %bitop = shl <8 x i32> <i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1>, %a
+ ret <8 x i32> %bitop
+}
+