diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -56685,9 +56685,6 @@
   if (!Subtarget.hasF16C() || Subtarget.useSoftFloat())
     return SDValue();
 
-  if (Subtarget.hasFP16())
-    return SDValue();
-
   bool IsStrict = N->isStrictFPOpcode();
   EVT VT = N->getValueType(0);
   SDValue Src = N->getOperand(IsStrict ? 1 : 0);
@@ -56697,11 +56694,47 @@
       SrcVT.getVectorElementType() != MVT::f32)
     return SDValue();
 
+  SDLoc dl(N);
+
+  SDValue Cvt, Chain;
   unsigned NumElts = VT.getVectorNumElements();
-  if (NumElts == 1 || !isPowerOf2_32(NumElts))
+  if (Subtarget.hasFP16()) {
+    // Combine (v8f16 fp_round(concat_vectors(v4f32 (xint_to_fp v4i64), ..)))
+    // into (v8f16 vector_shuffle(v8f16 (CVTXI2P v4i64), ..))
+    if (NumElts == 8 && Src.getOpcode() == ISD::CONCAT_VECTORS) {
+      SDValue Cvt0, Cvt1;
+      SDValue Op0 = Src.getOperand(0);
+      SDValue Op1 = Src.getOperand(1);
+      bool IsOp0Strict = Op0->isStrictFPOpcode();
+      if (Op0.getOpcode() != Op1.getOpcode() ||
+          Op0.getOperand(IsOp0Strict ? 1 : 0).getValueType() != MVT::v4i64 ||
+          Op1.getOperand(IsOp0Strict ? 1 : 0).getValueType() != MVT::v4i64) {
+        return SDValue();
+      }
+      int Mask[8] = {0, 1, 2, 3, 8, 9, 10, 11};
+      if (IsStrict) {
+        assert(IsOp0Strict && "Op0 must be strict node");
+        unsigned Opc = Op0.getOpcode() == ISD::SINT_TO_FP
+                           ? X86ISD::STRICT_CVTSI2P
+                           : X86ISD::STRICT_CVTUI2P;
+        Cvt0 = DAG.getNode(Opc, dl, {MVT::v8f16, MVT::Other},
+                           {Op0.getOperand(0), Op0.getOperand(1)});
+        Cvt1 = DAG.getNode(Opc, dl, {MVT::v8f16, MVT::Other},
+                           {Op1.getOperand(0), Op1.getOperand(1)});
+        Cvt = DAG.getVectorShuffle(MVT::v8f16, dl, Cvt0, Cvt1, Mask);
+        return DAG.getMergeValues({Cvt, Cvt0.getValue(1)}, dl);
+      }
+      unsigned Opc = Op0.getOpcode() == ISD::SINT_TO_FP ? X86ISD::CVTSI2P
+                                                        : X86ISD::CVTUI2P;
+      Cvt0 = DAG.getNode(Opc, dl, MVT::v8f16, Op0.getOperand(0));
+      Cvt1 = DAG.getNode(Opc, dl, MVT::v8f16, Op1.getOperand(0));
+      return Cvt = DAG.getVectorShuffle(MVT::v8f16, dl, Cvt0, Cvt1, Mask);
+    }
     return SDValue();
+  }
 
-  SDLoc dl(N);
+  if (NumElts == 1 || !isPowerOf2_32(NumElts))
+    return SDValue();
 
   // Widen to at least 4 input elements.
   if (NumElts < 4)
@@ -56709,9 +56742,8 @@
                       DAG.getConstantFP(0.0, dl, SrcVT));
 
   // Destination is v8i16 with at least 8 elements.
-  EVT CvtVT = EVT::getVectorVT(*DAG.getContext(), MVT::i16,
-                               std::max(8U, NumElts));
-  SDValue Cvt, Chain;
+  EVT CvtVT =
+      EVT::getVectorVT(*DAG.getContext(), MVT::i16, std::max(8U, NumElts));
   SDValue Rnd = DAG.getTargetConstant(4, dl, MVT::i32);
   if (IsStrict) {
     Cvt = DAG.getNode(X86ISD::STRICT_CVTPS2PH, dl, {CvtVT, MVT::Other},
diff --git a/llvm/test/CodeGen/X86/avx512fp16-cvt.ll b/llvm/test/CodeGen/X86/avx512fp16-cvt.ll
--- a/llvm/test/CodeGen/X86/avx512fp16-cvt.ll
+++ b/llvm/test/CodeGen/X86/avx512fp16-cvt.ll
@@ -1031,10 +1031,9 @@
 define <8 x half> @s64tof16(<8 x i64> %a) #0 {
 ; CHECK-LABEL: s64tof16:
 ; CHECK:       # %bb.0:
-; CHECK-NEXT:    vcvtqq2ps %ymm0, %xmm0
-; CHECK-NEXT:    vcvtqq2ps %ymm1, %xmm1
-; CHECK-NEXT:    vinsertf128 $1, %xmm1, %ymm0, %ymm0
-; CHECK-NEXT:    vcvtps2phx %ymm0, %xmm0
+; CHECK-NEXT:    vcvtqq2ph %ymm1, %xmm1
+; CHECK-NEXT:    vcvtqq2ph %ymm0, %xmm0
+; CHECK-NEXT:    vmovlhps {{.*#+}} xmm0 = xmm0[0],xmm1[0]
 ; CHECK-NEXT:    vzeroupper
 ; CHECK-NEXT:    ret{{[l|q]}}
   %1 = sitofp <8 x i64> %a to <8 x half>
@@ -1044,10 +1043,9 @@
 define <8 x half> @u64tof16(<8 x i64> %a) #0 {
 ; CHECK-LABEL: u64tof16:
 ; CHECK:       # %bb.0:
-; CHECK-NEXT:    vcvtuqq2ps %ymm0, %xmm0
-; CHECK-NEXT:    vcvtuqq2ps %ymm1, %xmm1
-; CHECK-NEXT:    vinsertf128 $1, %xmm1, %ymm0, %ymm0
-; CHECK-NEXT:    vcvtps2phx %ymm0, %xmm0
+; CHECK-NEXT:    vcvtuqq2ph %ymm1, %xmm1
+; CHECK-NEXT:    vcvtuqq2ph %ymm0, %xmm0
+; CHECK-NEXT:    vmovlhps {{.*#+}} xmm0 = xmm0[0],xmm1[0]
 ; CHECK-NEXT:    vzeroupper
 ; CHECK-NEXT:    ret{{[l|q]}}
   %1 = uitofp <8 x i64> %a to <8 x half>
diff --git a/llvm/test/CodeGen/X86/vec-strict-inttofp-256-fp16.ll b/llvm/test/CodeGen/X86/vec-strict-inttofp-256-fp16.ll
--- a/llvm/test/CodeGen/X86/vec-strict-inttofp-256-fp16.ll
+++ b/llvm/test/CodeGen/X86/vec-strict-inttofp-256-fp16.ll
@@ -146,10 +146,9 @@
 define <8 x half> @sitofp_v8i64_v8f16(<8 x i64> %x) #1 {
 ; CHECK-LABEL: sitofp_v8i64_v8f16:
 ; CHECK:       # %bb.0:
-; CHECK-NEXT:    vcvtqq2ps %ymm0, %xmm0
-; CHECK-NEXT:    vcvtqq2ps %ymm1, %xmm1
-; CHECK-NEXT:    vinsertf128 $1, %xmm1, %ymm0, %ymm0
-; CHECK-NEXT:    vcvtps2phx %ymm0, %xmm0
+; CHECK-NEXT:    vcvtuqq2ph %ymm1, %xmm1
+; CHECK-NEXT:    vcvtuqq2ph %ymm0, %xmm0
+; CHECK-NEXT:    vmovlhps {{.*#+}} xmm0 = xmm0[0],xmm1[0]
 ; CHECK-NEXT:    vzeroupper
 ; CHECK-NEXT:    ret{{[l|q]}}
  %result = call <8 x half> @llvm.experimental.constrained.sitofp.v8f16.v8i64(<8 x i64> %x,
@@ -161,10 +160,9 @@
 define <8 x half> @uitofp_v8i64_v8f16(<8 x i64> %x) #1 {
 ; CHECK-LABEL: uitofp_v8i64_v8f16:
 ; CHECK:       # %bb.0:
-; CHECK-NEXT:    vcvtuqq2ps %ymm0, %xmm0
-; CHECK-NEXT:    vcvtuqq2ps %ymm1, %xmm1
-; CHECK-NEXT:    vinsertf128 $1, %xmm1, %ymm0, %ymm0
-; CHECK-NEXT:    vcvtps2phx %ymm0, %xmm0
+; CHECK-NEXT:    vcvtuqq2ph %ymm1, %xmm1
+; CHECK-NEXT:    vcvtuqq2ph %ymm0, %xmm0
+; CHECK-NEXT:    vmovlhps {{.*#+}} xmm0 = xmm0[0],xmm1[0]
 ; CHECK-NEXT:    vzeroupper
 ; CHECK-NEXT:    ret{{[l|q]}}
  %result = call <8 x half> @llvm.experimental.constrained.uitofp.v8f16.v8i64(<8 x i64> %x,