Revert "[X86][AVX512] Adding a pattern for broadcastm intrinsic."

This reverts commit r316890.

Change-Id: I683cceee9848ef309b452293086b1f26a941950d
llvm-svn: 316894

1 files changed, 0 insertions, 64 deletions

diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 02b83e2e3fa..6fb94700b9f 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -6687,44 +6687,6 @@ static bool isUseOfShuffle(SDNode *N) {
   return false;
 }
 
-// Check if the current node of build vector is a zero extended vector.
-// If so, return the value extended.
-// For example: (0,0,0,a,0,0,0,a,0,0,0,a,0,0,0,a) returns a.
-// NumElt - return the number of zero extended identical values.
-// EltType - return the type of the value include the zero extend.
-static SDValue isSplatZeroExtended(const BuildVectorSDNode *Op,
-                                   unsigned &NumElt, MVT &EltType) {
-  SDValue ExtValue = Op->getOperand(0);
-  unsigned NumElts = Op->getNumOperands();
-  unsigned Delta = NumElts;
-
-  for (unsigned i = 1; i < NumElts; i++) {
-    if (Op->getOperand(i) == ExtValue) {
-      Delta = i;
-      break;
-    }
-    if (!(Op->getOperand(i).isUndef() || isNullConstant(Op->getOperand(i))))
-      return SDValue();
-  }
-  if (!isPowerOf2_32(Delta) || Delta == 1)
-    return SDValue();
-
-  for (unsigned i = Delta; i < NumElts; i++) {
-    if (i % Delta == 0) {
-      if (Op->getOperand(i) != ExtValue)
-        return SDValue();
-    } else if (!(isNullConstant(Op->getOperand(i)) ||
-                 Op->getOperand(i).isUndef()))
-      return SDValue();
-  }
-  unsigned EltSize =
-      Op->getSimpleValueType(0).getScalarSizeInBits();
-  unsigned ExtVTSize = EltSize * Delta;
-  EltType = MVT::getIntegerVT(ExtVTSize);
-  NumElt = NumElts / Delta;
-  return ExtValue;
-}
-
 /// Attempt to use the vbroadcast instruction to generate a splat value
 /// from a splat BUILD_VECTOR which uses:
 ///  a. A single scalar load, or a constant.
@@ -6747,32 +6709,6 @@ static SDValue lowerBuildVectorAsBroadcast(BuildVectorSDNode *BVOp,
   assert((VT.is128BitVector() || VT.is256BitVector() || VT.is512BitVector()) &&
          "Unsupported vector type for broadcast.");
 
-  // Attempt to use VBROADCASTM
-  // From this paterrn:
-  //  a. t0 = (zext_i64 (bitcast_i8 v2i1 X))
-  //  b. t1 = (build_vector t0 t0)
-  //
-  // Create (VBROADCASTM v2i1 X)
-  if (Subtarget.hasCDI() && (VT.is512BitVector() || Subtarget.hasVLX())) {
-    MVT EltType;
-    unsigned NumElts;
-    SDValue ZeroExtended = isSplatZeroExtended(BVOp, NumElts, EltType);
-    if (ZeroExtended && ZeroExtended.getOpcode() == ISD::BITCAST) {
-      SDValue BOperand = ZeroExtended.getOperand(0);
-      if (BOperand.getSimpleValueType().getVectorElementType() == MVT::i1) {
-        if ((EltType == MVT::i64 &&
-             VT.getVectorElementType() == MVT::i8) || // for broadcastmb2q
-            (EltType == MVT::i32 &&
-             VT.getVectorElementType() == MVT::i16)) { // for broadcastmw2d
-          SDValue Brdcst =
-              DAG.getNode(X86ISD::VBROADCASTM, dl,
-                          MVT::getVectorVT(EltType, NumElts), BOperand);
-          return DAG.getBitcast(VT, Brdcst);
-        }
-      }
-    }
-  }
-
   BitVector UndefElements;
   SDValue Ld = BVOp->getSplatValue(&UndefElements);