diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index a956074e50d86..faea2adf52089 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -20819,7 +20819,8 @@ static SDValue truncateVectorWithPACKSS(EVT DstVT, SDValue In, const SDLoc &DL,
 static SDValue matchTruncateWithPACK(unsigned &PackOpcode, EVT DstVT,
                                      SDValue In, const SDLoc &DL,
                                      SelectionDAG &DAG,
-                                     const X86Subtarget &Subtarget) {
+                                     const X86Subtarget &Subtarget,
+                                     const SDNodeFlags Flags = SDNodeFlags()) {
   // Requires SSE2.
   if (!Subtarget.hasSSE2())
     return SDValue();
@@ -20865,7 +20866,8 @@ static SDValue matchTruncateWithPACK(unsigned &PackOpcode, EVT DstVT,
   // e.g. Masks, zext_in_reg, etc.
   // Pre-SSE41 we can only use PACKUSWB.
   KnownBits Known = DAG.computeKnownBits(In);
-  if ((NumSrcEltBits - NumPackedZeroBits) <= Known.countMinLeadingZeros()) {
+  if ((Flags.hasNoUnsignedWrap() && NumDstEltBits <= NumPackedZeroBits) ||
+      (NumSrcEltBits - NumPackedZeroBits) <= Known.countMinLeadingZeros()) {
     PackOpcode = X86ISD::PACKUS;
     return In;
   }
@@ -20884,7 +20886,7 @@ static SDValue matchTruncateWithPACK(unsigned &PackOpcode, EVT DstVT,
     return SDValue();
 
   unsigned MinSignBits = NumSrcEltBits - NumPackedSignBits;
-  if (MinSignBits < NumSignBits) {
+  if (Flags.hasNoSignedWrap() || MinSignBits < NumSignBits) {
     PackOpcode = X86ISD::PACKSS;
     return In;
   }
@@ -20906,10 +20908,9 @@ static SDValue matchTruncateWithPACK(unsigned &PackOpcode, EVT DstVT,
 /// This function lowers a vector truncation of 'extended sign-bits' or
 /// 'extended zero-bits' values.
 /// vXi16/vXi32/vXi64 to vXi8/vXi16/vXi32 into X86ISD::PACKSS/PACKUS operations.
-static SDValue LowerTruncateVecPackWithSignBits(MVT DstVT, SDValue In,
-                                                const SDLoc &DL,
-                                                const X86Subtarget &Subtarget,
-                                                SelectionDAG &DAG) {
+static SDValue LowerTruncateVecPackWithSignBits(
+    MVT DstVT, SDValue In, const SDLoc &DL, const X86Subtarget &Subtarget,
+    SelectionDAG &DAG, const SDNodeFlags Flags = SDNodeFlags()) {
   MVT SrcVT = In.getSimpleValueType();
   MVT DstSVT = DstVT.getVectorElementType();
   MVT SrcSVT = SrcVT.getVectorElementType();
@@ -20931,8 +20932,8 @@ static SDValue LowerTruncateVecPackWithSignBits(MVT DstVT, SDValue In,
   }
 
   unsigned PackOpcode;
-  if (SDValue Src =
-          matchTruncateWithPACK(PackOpcode, DstVT, In, DL, DAG, Subtarget))
+  if (SDValue Src = matchTruncateWithPACK(PackOpcode, DstVT, In, DL, DAG,
+                                          Subtarget, Flags))
     return truncateVectorWithPACK(PackOpcode, DstVT, Src, DL, DAG, Subtarget);
 
   return SDValue();
@@ -21102,8 +21103,8 @@ SDValue X86TargetLowering::LowerTRUNCATE(SDValue Op, SelectionDAG &DAG) const {
     // Pre-AVX512 (or prefer-256bit) see if we can make use of PACKSS/PACKUS.
     if (!Subtarget.hasAVX512() ||
         (InVT.is512BitVector() && VT.is256BitVector()))
-      if (SDValue SignPack =
-              LowerTruncateVecPackWithSignBits(VT, In, DL, Subtarget, DAG))
+      if (SDValue SignPack = LowerTruncateVecPackWithSignBits(
+              VT, In, DL, Subtarget, DAG, Op->getFlags()))
         return SignPack;
 
     // Pre-AVX512 see if we can make use of PACKSS/PACKUS.
@@ -21120,8 +21121,8 @@ SDValue X86TargetLowering::LowerTRUNCATE(SDValue Op, SelectionDAG &DAG) const {
   // Attempt to truncate with PACKUS/PACKSS even on AVX512 if we'd have to
   // concat from subvectors to use VPTRUNC etc.
   if (!Subtarget.hasAVX512() || isFreeToSplitVector(In.getNode(), DAG))
-    if (SDValue SignPack =
-            LowerTruncateVecPackWithSignBits(VT, In, DL, Subtarget, DAG))
+    if (SDValue SignPack = LowerTruncateVecPackWithSignBits(
+            VT, In, DL, Subtarget, DAG, Op->getFlags()))
       return SignPack;
 
   // vpmovqb/w/d, vpmovdb/w, vpmovwb
@@ -33578,10 +33579,10 @@ void X86TargetLowering::ReplaceNodeResults(SDNode *N,
 
     // See if there are sufficient leading bits to perform a PACKUS/PACKSS.
     unsigned PackOpcode;
-    if (SDValue Src =
-            matchTruncateWithPACK(PackOpcode, VT, In, dl, DAG, Subtarget)) {
-      if (SDValue Res = truncateVectorWithPACK(PackOpcode, VT, Src,
-                                               dl, DAG, Subtarget)) {
+    if (SDValue Src = matchTruncateWithPACK(PackOpcode, VT, In, dl, DAG,
+                                            Subtarget, N->getFlags())) {
+      if (SDValue Res =
+              truncateVectorWithPACK(PackOpcode, VT, Src, dl, DAG, Subtarget)) {
         Res = widenSubVector(WidenVT, Res, false, Subtarget, DAG, dl);
         Results.push_back(Res);
         return;
diff --git a/llvm/test/CodeGen/X86/vector-trunc-nowrap.ll b/llvm/test/CodeGen/X86/vector-trunc-nowrap.ll
index 32c7e820c967b..2b8eedfbbdc9c 100644
--- a/llvm/test/CodeGen/X86/vector-trunc-nowrap.ll
+++ b/llvm/test/CodeGen/X86/vector-trunc-nowrap.ll
@@ -107,50 +107,28 @@ entry:
 }
 
 define <8 x i16> @trunc8i64_8i16_nsw(<8 x i64> %a) {
-; SSE2-SSSE3-LABEL: trunc8i64_8i16_nsw:
-; SSE2-SSSE3:       # %bb.0: # %entry
-; SSE2-SSSE3-NEXT:    shufps {{.*#+}} xmm2 = xmm2[0,2],xmm3[0,2]
-; SSE2-SSSE3-NEXT:    pslld $16, %xmm2
-; SSE2-SSSE3-NEXT:    psrad $16, %xmm2
-; SSE2-SSSE3-NEXT:    shufps {{.*#+}} xmm0 = xmm0[0,2],xmm1[0,2]
-; SSE2-SSSE3-NEXT:    pslld $16, %xmm0
-; SSE2-SSSE3-NEXT:    psrad $16, %xmm0
-; SSE2-SSSE3-NEXT:    packssdw %xmm2, %xmm0
-; SSE2-SSSE3-NEXT:    retq
-;
-; SSE41-LABEL: trunc8i64_8i16_nsw:
-; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pxor %xmm4, %xmm4
-; SSE41-NEXT:    pblendw {{.*#+}} xmm3 = xmm3[0],xmm4[1,2,3],xmm3[4],xmm4[5,6,7]
-; SSE41-NEXT:    pblendw {{.*#+}} xmm2 = xmm2[0],xmm4[1,2,3],xmm2[4],xmm4[5,6,7]
-; SSE41-NEXT:    packusdw %xmm3, %xmm2
-; SSE41-NEXT:    pblendw {{.*#+}} xmm1 = xmm1[0],xmm4[1,2,3],xmm1[4],xmm4[5,6,7]
-; SSE41-NEXT:    pblendw {{.*#+}} xmm0 = xmm0[0],xmm4[1,2,3],xmm0[4],xmm4[5,6,7]
-; SSE41-NEXT:    packusdw %xmm1, %xmm0
-; SSE41-NEXT:    packusdw %xmm2, %xmm0
-; SSE41-NEXT:    retq
+; SSE-LABEL: trunc8i64_8i16_nsw:
+; SSE:       # %bb.0: # %entry
+; SSE-NEXT:    packssdw %xmm3, %xmm2
+; SSE-NEXT:    packssdw %xmm1, %xmm0
+; SSE-NEXT:    packssdw %xmm2, %xmm0
+; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc8i64_8i16_nsw:
 ; AVX1:       # %bb.0: # %entry
-; AVX1-NEXT:    vbroadcastsd {{.*#+}} ymm2 = [65535,65535,65535,65535]
-; AVX1-NEXT:    vandps %ymm2, %ymm1, %ymm1
-; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm3
-; AVX1-NEXT:    vpackusdw %xmm3, %xmm1, %xmm1
-; AVX1-NEXT:    vandps %ymm2, %ymm0, %ymm0
+; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm2
+; AVX1-NEXT:    vpackssdw %xmm2, %xmm1, %xmm1
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm2
-; AVX1-NEXT:    vpackusdw %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpackusdw %xmm1, %xmm0, %xmm0
+; AVX1-NEXT:    vpackssdw %xmm2, %xmm0, %xmm0
+; AVX1-NEXT:    vpackssdw %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc8i64_8i16_nsw:
 ; AVX2:       # %bb.0: # %entry
-; AVX2-NEXT:    vpxor %xmm2, %xmm2, %xmm2
-; AVX2-NEXT:    vpblendw {{.*#+}} ymm1 = ymm1[0],ymm2[1,2,3],ymm1[4],ymm2[5,6,7],ymm1[8],ymm2[9,10,11],ymm1[12],ymm2[13,14,15]
-; AVX2-NEXT:    vpblendw {{.*#+}} ymm0 = ymm0[0],ymm2[1,2,3],ymm0[4],ymm2[5,6,7],ymm0[8],ymm2[9,10,11],ymm0[12],ymm2[13,14,15]
-; AVX2-NEXT:    vpackusdw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpackssdw %ymm1, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vpackusdw %xmm1, %xmm0, %xmm0
+; AVX2-NEXT:    vpackssdw %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpshufd {{.*#+}} xmm0 = xmm0[0,2,1,3]
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
@@ -179,23 +157,15 @@ define <8 x i16> @trunc8i64_8i16_nuw(<8 x i64> %a) {
 ;
 ; SSE41-LABEL: trunc8i64_8i16_nuw:
 ; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pxor %xmm4, %xmm4
-; SSE41-NEXT:    pblendw {{.*#+}} xmm3 = xmm3[0],xmm4[1,2,3],xmm3[4],xmm4[5,6,7]
-; SSE41-NEXT:    pblendw {{.*#+}} xmm2 = xmm2[0],xmm4[1,2,3],xmm2[4],xmm4[5,6,7]
 ; SSE41-NEXT:    packusdw %xmm3, %xmm2
-; SSE41-NEXT:    pblendw {{.*#+}} xmm1 = xmm1[0],xmm4[1,2,3],xmm1[4],xmm4[5,6,7]
-; SSE41-NEXT:    pblendw {{.*#+}} xmm0 = xmm0[0],xmm4[1,2,3],xmm0[4],xmm4[5,6,7]
 ; SSE41-NEXT:    packusdw %xmm1, %xmm0
 ; SSE41-NEXT:    packusdw %xmm2, %xmm0
 ; SSE41-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc8i64_8i16_nuw:
 ; AVX1:       # %bb.0: # %entry
-; AVX1-NEXT:    vbroadcastsd {{.*#+}} ymm2 = [65535,65535,65535,65535]
-; AVX1-NEXT:    vandps %ymm2, %ymm1, %ymm1
-; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm3
-; AVX1-NEXT:    vpackusdw %xmm3, %xmm1, %xmm1
-; AVX1-NEXT:    vandps %ymm2, %ymm0, %ymm0
+; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm2
+; AVX1-NEXT:    vpackusdw %xmm2, %xmm1, %xmm1
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm2
 ; AVX1-NEXT:    vpackusdw %xmm2, %xmm0, %xmm0
 ; AVX1-NEXT:    vpackusdw %xmm1, %xmm0, %xmm0
@@ -204,9 +174,6 @@ define <8 x i16> @trunc8i64_8i16_nuw(<8 x i64> %a) {
 ;
 ; AVX2-LABEL: trunc8i64_8i16_nuw:
 ; AVX2:       # %bb.0: # %entry
-; AVX2-NEXT:    vpxor %xmm2, %xmm2, %xmm2
-; AVX2-NEXT:    vpblendw {{.*#+}} ymm1 = ymm1[0],ymm2[1,2,3],ymm1[4],ymm2[5,6,7],ymm1[8],ymm2[9,10,11],ymm1[12],ymm2[13,14,15]
-; AVX2-NEXT:    vpblendw {{.*#+}} ymm0 = ymm0[0],ymm2[1,2,3],ymm0[4],ymm2[5,6,7],ymm0[8],ymm2[9,10,11],ymm0[12],ymm2[13,14,15]
 ; AVX2-NEXT:    vpackusdw %ymm1, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
 ; AVX2-NEXT:    vpackusdw %xmm1, %xmm0, %xmm0
@@ -225,59 +192,34 @@ entry:
 }
 
 define void @trunc8i64_8i8_nsw(<8 x i64> %a) {
-; SSE2-SSSE3-LABEL: trunc8i64_8i8_nsw:
-; SSE2-SSSE3:       # %bb.0: # %entry
-; SSE2-SSSE3-NEXT:    movdqa {{.*#+}} xmm4 = [255,0,0,0,0,0,0,0,255,0,0,0,0,0,0,0]
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm3
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm2
-; SSE2-SSSE3-NEXT:    packuswb %xmm3, %xmm2
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm1
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm0
-; SSE2-SSSE3-NEXT:    packuswb %xmm1, %xmm0
-; SSE2-SSSE3-NEXT:    packuswb %xmm2, %xmm0
-; SSE2-SSSE3-NEXT:    packuswb %xmm0, %xmm0
-; SSE2-SSSE3-NEXT:    movq %xmm0, (%rax)
-; SSE2-SSSE3-NEXT:    retq
-;
-; SSE41-LABEL: trunc8i64_8i8_nsw:
-; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pmovzxbq {{.*#+}} xmm4 = [255,255]
-; SSE41-NEXT:    pand %xmm4, %xmm3
-; SSE41-NEXT:    pand %xmm4, %xmm2
-; SSE41-NEXT:    packusdw %xmm3, %xmm2
-; SSE41-NEXT:    pand %xmm4, %xmm1
-; SSE41-NEXT:    pand %xmm4, %xmm0
-; SSE41-NEXT:    packusdw %xmm1, %xmm0
-; SSE41-NEXT:    packusdw %xmm2, %xmm0
-; SSE41-NEXT:    packuswb %xmm0, %xmm0
-; SSE41-NEXT:    movq %xmm0, (%rax)
-; SSE41-NEXT:    retq
+; SSE-LABEL: trunc8i64_8i8_nsw:
+; SSE:       # %bb.0: # %entry
+; SSE-NEXT:    packssdw %xmm3, %xmm2
+; SSE-NEXT:    packssdw %xmm1, %xmm0
+; SSE-NEXT:    packssdw %xmm2, %xmm0
+; SSE-NEXT:    packsswb %xmm0, %xmm0
+; SSE-NEXT:    movq %xmm0, (%rax)
+; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc8i64_8i8_nsw:
 ; AVX1:       # %bb.0: # %entry
-; AVX1-NEXT:    vbroadcastsd {{.*#+}} ymm2 = [255,255,255,255]
-; AVX1-NEXT:    vandps %ymm2, %ymm1, %ymm1
-; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm3
-; AVX1-NEXT:    vpackusdw %xmm3, %xmm1, %xmm1
-; AVX1-NEXT:    vandps %ymm2, %ymm0, %ymm0
+; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm2
+; AVX1-NEXT:    vpackssdw %xmm2, %xmm1, %xmm1
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm2
-; AVX1-NEXT:    vpackusdw %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpackusdw %xmm1, %xmm0, %xmm0
-; AVX1-NEXT:    vpackuswb %xmm0, %xmm0, %xmm0
+; AVX1-NEXT:    vpackssdw %xmm2, %xmm0, %xmm0
+; AVX1-NEXT:    vpackssdw %xmm1, %xmm0, %xmm0
+; AVX1-NEXT:    vpacksswb %xmm0, %xmm0, %xmm0
 ; AVX1-NEXT:    vmovq %xmm0, (%rax)
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc8i64_8i8_nsw:
 ; AVX2:       # %bb.0: # %entry
-; AVX2-NEXT:    vpbroadcastq {{.*#+}} ymm2 = [255,0,0,0,0,0,0,0,255,0,0,0,0,0,0,0,255,0,0,0,0,0,0,0,255,0,0,0,0,0,0,0]
-; AVX2-NEXT:    vpand %ymm2, %ymm1, %ymm1
-; AVX2-NEXT:    vpand %ymm2, %ymm0, %ymm0
-; AVX2-NEXT:    vpackusdw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpackssdw %ymm1, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vpackusdw %xmm1, %xmm0, %xmm0
+; AVX2-NEXT:    vpackssdw %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpshufd {{.*#+}} xmm0 = xmm0[0,2,1,3]
-; AVX2-NEXT:    vpackuswb %xmm0, %xmm0, %xmm0
+; AVX2-NEXT:    vpacksswb %xmm0, %xmm0, %xmm0
 ; AVX2-NEXT:    vmovq %xmm0, (%rax)
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
@@ -296,12 +238,7 @@ entry:
 define void @trunc8i64_8i8_nuw(<8 x i64> %a) {
 ; SSE2-SSSE3-LABEL: trunc8i64_8i8_nuw:
 ; SSE2-SSSE3:       # %bb.0: # %entry
-; SSE2-SSSE3-NEXT:    movdqa {{.*#+}} xmm4 = [255,0,0,0,0,0,0,0,255,0,0,0,0,0,0,0]
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm3
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm2
 ; SSE2-SSSE3-NEXT:    packuswb %xmm3, %xmm2
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm1
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm0
 ; SSE2-SSSE3-NEXT:    packuswb %xmm1, %xmm0
 ; SSE2-SSSE3-NEXT:    packuswb %xmm2, %xmm0
 ; SSE2-SSSE3-NEXT:    packuswb %xmm0, %xmm0
@@ -310,12 +247,7 @@ define void @trunc8i64_8i8_nuw(<8 x i64> %a) {
 ;
 ; SSE41-LABEL: trunc8i64_8i8_nuw:
 ; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pmovzxbq {{.*#+}} xmm4 = [255,255]
-; SSE41-NEXT:    pand %xmm4, %xmm3
-; SSE41-NEXT:    pand %xmm4, %xmm2
 ; SSE41-NEXT:    packusdw %xmm3, %xmm2
-; SSE41-NEXT:    pand %xmm4, %xmm1
-; SSE41-NEXT:    pand %xmm4, %xmm0
 ; SSE41-NEXT:    packusdw %xmm1, %xmm0
 ; SSE41-NEXT:    packusdw %xmm2, %xmm0
 ; SSE41-NEXT:    packuswb %xmm0, %xmm0
@@ -324,11 +256,8 @@ define void @trunc8i64_8i8_nuw(<8 x i64> %a) {
 ;
 ; AVX1-LABEL: trunc8i64_8i8_nuw:
 ; AVX1:       # %bb.0: # %entry
-; AVX1-NEXT:    vbroadcastsd {{.*#+}} ymm2 = [255,255,255,255]
-; AVX1-NEXT:    vandps %ymm2, %ymm1, %ymm1
-; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm3
-; AVX1-NEXT:    vpackusdw %xmm3, %xmm1, %xmm1
-; AVX1-NEXT:    vandps %ymm2, %ymm0, %ymm0
+; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm2
+; AVX1-NEXT:    vpackusdw %xmm2, %xmm1, %xmm1
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm2
 ; AVX1-NEXT:    vpackusdw %xmm2, %xmm0, %xmm0
 ; AVX1-NEXT:    vpackusdw %xmm1, %xmm0, %xmm0
@@ -339,9 +268,6 @@ define void @trunc8i64_8i8_nuw(<8 x i64> %a) {
 ;
 ; AVX2-LABEL: trunc8i64_8i8_nuw:
 ; AVX2:       # %bb.0: # %entry
-; AVX2-NEXT:    vpbroadcastq {{.*#+}} ymm2 = [255,0,0,0,0,0,0,0,255,0,0,0,0,0,0,0,255,0,0,0,0,0,0,0,255,0,0,0,0,0,0,0]
-; AVX2-NEXT:    vpand %ymm2, %ymm1, %ymm1
-; AVX2-NEXT:    vpand %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpackusdw %ymm1, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
 ; AVX2-NEXT:    vpackusdw %xmm1, %xmm0, %xmm0
@@ -363,44 +289,22 @@ entry:
 }
 
 define <8 x i16> @trunc8i32_8i16_nsw(<8 x i32> %a) {
-; SSE2-LABEL: trunc8i32_8i16_nsw:
-; SSE2:       # %bb.0: # %entry
-; SSE2-NEXT:    pslld $16, %xmm1
-; SSE2-NEXT:    psrad $16, %xmm1
-; SSE2-NEXT:    pslld $16, %xmm0
-; SSE2-NEXT:    psrad $16, %xmm0
-; SSE2-NEXT:    packssdw %xmm1, %xmm0
-; SSE2-NEXT:    retq
-;
-; SSSE3-LABEL: trunc8i32_8i16_nsw:
-; SSSE3:       # %bb.0: # %entry
-; SSSE3-NEXT:    movdqa {{.*#+}} xmm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15]
-; SSSE3-NEXT:    pshufb %xmm2, %xmm1
-; SSSE3-NEXT:    pshufb %xmm2, %xmm0
-; SSSE3-NEXT:    punpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
-; SSSE3-NEXT:    retq
-;
-; SSE41-LABEL: trunc8i32_8i16_nsw:
-; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pxor %xmm2, %xmm2
-; SSE41-NEXT:    pblendw {{.*#+}} xmm1 = xmm1[0],xmm2[1],xmm1[2],xmm2[3],xmm1[4],xmm2[5],xmm1[6],xmm2[7]
-; SSE41-NEXT:    pblendw {{.*#+}} xmm0 = xmm0[0],xmm2[1],xmm0[2],xmm2[3],xmm0[4],xmm2[5],xmm0[6],xmm2[7]
-; SSE41-NEXT:    packusdw %xmm1, %xmm0
-; SSE41-NEXT:    retq
+; SSE-LABEL: trunc8i32_8i16_nsw:
+; SSE:       # %bb.0: # %entry
+; SSE-NEXT:    packssdw %xmm1, %xmm0
+; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc8i32_8i16_nsw:
 ; AVX1:       # %bb.0: # %entry
-; AVX1-NEXT:    vandps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %ymm0, %ymm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
-; AVX1-NEXT:    vpackusdw %xmm1, %xmm0, %xmm0
+; AVX1-NEXT:    vpackssdw %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc8i32_8i16_nsw:
 ; AVX2:       # %bb.0: # %entry
-; AVX2-NEXT:    vpshufb {{.*#+}} ymm0 = ymm0[0,1,4,5,8,9,12,13,u,u,u,u,u,u,u,u,16,17,20,21,24,25,28,29,u,u,u,u,u,u,u,u]
-; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    # kill: def $xmm0 killed $xmm0 killed $ymm0
+; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
+; AVX2-NEXT:    vpackssdw %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
@@ -456,15 +360,11 @@ define <8 x i16> @trunc8i32_8i16_nuw(<8 x i32> %a) {
 ;
 ; SSE41-LABEL: trunc8i32_8i16_nuw:
 ; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pxor %xmm2, %xmm2
-; SSE41-NEXT:    pblendw {{.*#+}} xmm1 = xmm1[0],xmm2[1],xmm1[2],xmm2[3],xmm1[4],xmm2[5],xmm1[6],xmm2[7]
-; SSE41-NEXT:    pblendw {{.*#+}} xmm0 = xmm0[0],xmm2[1],xmm0[2],xmm2[3],xmm0[4],xmm2[5],xmm0[6],xmm2[7]
 ; SSE41-NEXT:    packusdw %xmm1, %xmm0
 ; SSE41-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc8i32_8i16_nuw:
 ; AVX1:       # %bb.0: # %entry
-; AVX1-NEXT:    vandps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %ymm0, %ymm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
 ; AVX1-NEXT:    vpackusdw %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vzeroupper
@@ -472,9 +372,8 @@ define <8 x i16> @trunc8i32_8i16_nuw(<8 x i32> %a) {
 ;
 ; AVX2-LABEL: trunc8i32_8i16_nuw:
 ; AVX2:       # %bb.0: # %entry
-; AVX2-NEXT:    vpshufb {{.*#+}} ymm0 = ymm0[0,1,4,5,8,9,12,13,u,u,u,u,u,u,u,u,16,17,20,21,24,25,28,29,u,u,u,u,u,u,u,u]
-; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    # kill: def $xmm0 killed $xmm0 killed $ymm0
+; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
+; AVX2-NEXT:    vpackusdw %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
@@ -511,33 +410,18 @@ entry:
 }
 
 define void @trunc8i32_8i8_nsw(<8 x i32> %a) {
-; SSE2-SSSE3-LABEL: trunc8i32_8i8_nsw:
-; SSE2-SSSE3:       # %bb.0: # %entry
-; SSE2-SSSE3-NEXT:    movdqa {{.*#+}} xmm2 = [255,0,0,0,255,0,0,0,255,0,0,0,255,0,0,0]
-; SSE2-SSSE3-NEXT:    pand %xmm2, %xmm1
-; SSE2-SSSE3-NEXT:    pand %xmm2, %xmm0
-; SSE2-SSSE3-NEXT:    packuswb %xmm1, %xmm0
-; SSE2-SSSE3-NEXT:    packuswb %xmm0, %xmm0
-; SSE2-SSSE3-NEXT:    movq %xmm0, (%rax)
-; SSE2-SSSE3-NEXT:    retq
-;
-; SSE41-LABEL: trunc8i32_8i8_nsw:
-; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pmovzxbd {{.*#+}} xmm2 = [255,255,255,255]
-; SSE41-NEXT:    pand %xmm2, %xmm1
-; SSE41-NEXT:    pand %xmm2, %xmm0
-; SSE41-NEXT:    packusdw %xmm1, %xmm0
-; SSE41-NEXT:    packuswb %xmm0, %xmm0
-; SSE41-NEXT:    movq %xmm0, (%rax)
-; SSE41-NEXT:    retq
+; SSE-LABEL: trunc8i32_8i8_nsw:
+; SSE:       # %bb.0: # %entry
+; SSE-NEXT:    packssdw %xmm1, %xmm0
+; SSE-NEXT:    packsswb %xmm0, %xmm0
+; SSE-NEXT:    movq %xmm0, (%rax)
+; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc8i32_8i8_nsw:
 ; AVX1:       # %bb.0: # %entry
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
-; AVX1-NEXT:    vmovd {{.*#+}} xmm2 = [0,4,8,12,0,0,0,0,0,0,0,0,0,0,0,0]
-; AVX1-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpunpckldq {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1]
+; AVX1-NEXT:    vpackssdw %xmm1, %xmm0, %xmm0
+; AVX1-NEXT:    vpacksswb %xmm0, %xmm0, %xmm0
 ; AVX1-NEXT:    vmovq %xmm0, (%rax)
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
@@ -545,10 +429,8 @@ define void @trunc8i32_8i8_nsw(<8 x i32> %a) {
 ; AVX2-LABEL: trunc8i32_8i8_nsw:
 ; AVX2:       # %bb.0: # %entry
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovd {{.*#+}} xmm2 = [0,4,8,12,0,0,0,0,0,0,0,0,0,0,0,0]
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpckldq {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1]
+; AVX2-NEXT:    vpackssdw %xmm1, %xmm0, %xmm0
+; AVX2-NEXT:    vpacksswb %xmm0, %xmm0, %xmm0
 ; AVX2-NEXT:    vmovq %xmm0, (%rax)
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
@@ -589,9 +471,6 @@ entry:
 define void @trunc8i32_8i8_nuw(<8 x i32> %a) {
 ; SSE2-SSSE3-LABEL: trunc8i32_8i8_nuw:
 ; SSE2-SSSE3:       # %bb.0: # %entry
-; SSE2-SSSE3-NEXT:    movdqa {{.*#+}} xmm2 = [255,0,0,0,255,0,0,0,255,0,0,0,255,0,0,0]
-; SSE2-SSSE3-NEXT:    pand %xmm2, %xmm1
-; SSE2-SSSE3-NEXT:    pand %xmm2, %xmm0
 ; SSE2-SSSE3-NEXT:    packuswb %xmm1, %xmm0
 ; SSE2-SSSE3-NEXT:    packuswb %xmm0, %xmm0
 ; SSE2-SSSE3-NEXT:    movq %xmm0, (%rax)
@@ -599,9 +478,6 @@ define void @trunc8i32_8i8_nuw(<8 x i32> %a) {
 ;
 ; SSE41-LABEL: trunc8i32_8i8_nuw:
 ; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pmovzxbd {{.*#+}} xmm2 = [255,255,255,255]
-; SSE41-NEXT:    pand %xmm2, %xmm1
-; SSE41-NEXT:    pand %xmm2, %xmm0
 ; SSE41-NEXT:    packusdw %xmm1, %xmm0
 ; SSE41-NEXT:    packuswb %xmm0, %xmm0
 ; SSE41-NEXT:    movq %xmm0, (%rax)
@@ -610,10 +486,8 @@ define void @trunc8i32_8i8_nuw(<8 x i32> %a) {
 ; AVX1-LABEL: trunc8i32_8i8_nuw:
 ; AVX1:       # %bb.0: # %entry
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
-; AVX1-NEXT:    vmovd {{.*#+}} xmm2 = [0,4,8,12,0,0,0,0,0,0,0,0,0,0,0,0]
-; AVX1-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpunpckldq {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1]
+; AVX1-NEXT:    vpackusdw %xmm1, %xmm0, %xmm0
+; AVX1-NEXT:    vpackuswb %xmm0, %xmm0, %xmm0
 ; AVX1-NEXT:    vmovq %xmm0, (%rax)
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
@@ -621,10 +495,8 @@ define void @trunc8i32_8i8_nuw(<8 x i32> %a) {
 ; AVX2-LABEL: trunc8i32_8i8_nuw:
 ; AVX2:       # %bb.0: # %entry
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovd {{.*#+}} xmm2 = [0,4,8,12,0,0,0,0,0,0,0,0,0,0,0,0]
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpckldq {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1]
+; AVX2-NEXT:    vpackusdw %xmm1, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm0, %xmm0, %xmm0
 ; AVX2-NEXT:    vmovq %xmm0, (%rax)
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
@@ -663,57 +535,20 @@ entry:
 }
 
 define void @trunc16i32_16i16_nsw(<16 x i32> %a) {
-; SSE2-LABEL: trunc16i32_16i16_nsw:
-; SSE2:       # %bb.0: # %entry
-; SSE2-NEXT:    pslld $16, %xmm1
-; SSE2-NEXT:    psrad $16, %xmm1
-; SSE2-NEXT:    pslld $16, %xmm0
-; SSE2-NEXT:    psrad $16, %xmm0
-; SSE2-NEXT:    packssdw %xmm1, %xmm0
-; SSE2-NEXT:    pslld $16, %xmm3
-; SSE2-NEXT:    psrad $16, %xmm3
-; SSE2-NEXT:    pslld $16, %xmm2
-; SSE2-NEXT:    psrad $16, %xmm2
-; SSE2-NEXT:    packssdw %xmm3, %xmm2
-; SSE2-NEXT:    movdqu %xmm2, (%rax)
-; SSE2-NEXT:    movdqu %xmm0, (%rax)
-; SSE2-NEXT:    retq
-;
-; SSSE3-LABEL: trunc16i32_16i16_nsw:
-; SSSE3:       # %bb.0: # %entry
-; SSSE3-NEXT:    movdqa {{.*#+}} xmm4 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15]
-; SSSE3-NEXT:    pshufb %xmm4, %xmm1
-; SSSE3-NEXT:    pshufb %xmm4, %xmm0
-; SSSE3-NEXT:    punpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
-; SSSE3-NEXT:    pshufb %xmm4, %xmm3
-; SSSE3-NEXT:    pshufb %xmm4, %xmm2
-; SSSE3-NEXT:    punpcklqdq {{.*#+}} xmm2 = xmm2[0],xmm3[0]
-; SSSE3-NEXT:    movdqu %xmm2, (%rax)
-; SSSE3-NEXT:    movdqu %xmm0, (%rax)
-; SSSE3-NEXT:    retq
-;
-; SSE41-LABEL: trunc16i32_16i16_nsw:
-; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pxor %xmm4, %xmm4
-; SSE41-NEXT:    pblendw {{.*#+}} xmm1 = xmm1[0],xmm4[1],xmm1[2],xmm4[3],xmm1[4],xmm4[5],xmm1[6],xmm4[7]
-; SSE41-NEXT:    pblendw {{.*#+}} xmm0 = xmm0[0],xmm4[1],xmm0[2],xmm4[3],xmm0[4],xmm4[5],xmm0[6],xmm4[7]
-; SSE41-NEXT:    packusdw %xmm1, %xmm0
-; SSE41-NEXT:    pblendw {{.*#+}} xmm3 = xmm3[0],xmm4[1],xmm3[2],xmm4[3],xmm3[4],xmm4[5],xmm3[6],xmm4[7]
-; SSE41-NEXT:    pblendw {{.*#+}} xmm2 = xmm2[0],xmm4[1],xmm2[2],xmm4[3],xmm2[4],xmm4[5],xmm2[6],xmm4[7]
-; SSE41-NEXT:    packusdw %xmm3, %xmm2
-; SSE41-NEXT:    movdqu %xmm2, (%rax)
-; SSE41-NEXT:    movdqu %xmm0, (%rax)
-; SSE41-NEXT:    retq
+; SSE-LABEL: trunc16i32_16i16_nsw:
+; SSE:       # %bb.0: # %entry
+; SSE-NEXT:    packssdw %xmm1, %xmm0
+; SSE-NEXT:    packssdw %xmm3, %xmm2
+; SSE-NEXT:    movdqu %xmm2, (%rax)
+; SSE-NEXT:    movdqu %xmm0, (%rax)
+; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc16i32_16i16_nsw:
 ; AVX1:       # %bb.0: # %entry
-; AVX1-NEXT:    vbroadcastss {{.*#+}} ymm2 = [65535,65535,65535,65535,65535,65535,65535,65535]
-; AVX1-NEXT:    vandps %ymm2, %ymm0, %ymm0
-; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm3
-; AVX1-NEXT:    vpackusdw %xmm3, %xmm0, %xmm0
-; AVX1-NEXT:    vandps %ymm2, %ymm1, %ymm1
+; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm2
+; AVX1-NEXT:    vpackssdw %xmm2, %xmm0, %xmm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm2
-; AVX1-NEXT:    vpackusdw %xmm2, %xmm1, %xmm1
+; AVX1-NEXT:    vpackssdw %xmm2, %xmm1, %xmm1
 ; AVX1-NEXT:    vmovdqu %xmm1, (%rax)
 ; AVX1-NEXT:    vmovdqu %xmm0, (%rax)
 ; AVX1-NEXT:    vzeroupper
@@ -721,10 +556,7 @@ define void @trunc16i32_16i16_nsw(<16 x i32> %a) {
 ;
 ; AVX2-LABEL: trunc16i32_16i16_nsw:
 ; AVX2:       # %bb.0: # %entry
-; AVX2-NEXT:    vpxor %xmm2, %xmm2, %xmm2
-; AVX2-NEXT:    vpblendw {{.*#+}} ymm1 = ymm1[0],ymm2[1],ymm1[2],ymm2[3],ymm1[4],ymm2[5],ymm1[6],ymm2[7],ymm1[8],ymm2[9],ymm1[10],ymm2[11],ymm1[12],ymm2[13],ymm1[14],ymm2[15]
-; AVX2-NEXT:    vpblendw {{.*#+}} ymm0 = ymm0[0],ymm2[1],ymm0[2],ymm2[3],ymm0[4],ymm2[5],ymm0[6],ymm2[7],ymm0[8],ymm2[9],ymm0[10],ymm2[11],ymm0[12],ymm2[13],ymm0[14],ymm2[15]
-; AVX2-NEXT:    vpackusdw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpackssdw %ymm1, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,1,3]
 ; AVX2-NEXT:    vmovdqu %ymm0, (%rax)
 ; AVX2-NEXT:    vzeroupper
@@ -773,12 +605,7 @@ define void @trunc16i32_16i16_nuw(<16 x i32> %a) {
 ;
 ; SSE41-LABEL: trunc16i32_16i16_nuw:
 ; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pxor %xmm4, %xmm4
-; SSE41-NEXT:    pblendw {{.*#+}} xmm1 = xmm1[0],xmm4[1],xmm1[2],xmm4[3],xmm1[4],xmm4[5],xmm1[6],xmm4[7]
-; SSE41-NEXT:    pblendw {{.*#+}} xmm0 = xmm0[0],xmm4[1],xmm0[2],xmm4[3],xmm0[4],xmm4[5],xmm0[6],xmm4[7]
 ; SSE41-NEXT:    packusdw %xmm1, %xmm0
-; SSE41-NEXT:    pblendw {{.*#+}} xmm3 = xmm3[0],xmm4[1],xmm3[2],xmm4[3],xmm3[4],xmm4[5],xmm3[6],xmm4[7]
-; SSE41-NEXT:    pblendw {{.*#+}} xmm2 = xmm2[0],xmm4[1],xmm2[2],xmm4[3],xmm2[4],xmm4[5],xmm2[6],xmm4[7]
 ; SSE41-NEXT:    packusdw %xmm3, %xmm2
 ; SSE41-NEXT:    movdqu %xmm2, (%rax)
 ; SSE41-NEXT:    movdqu %xmm0, (%rax)
@@ -786,11 +613,8 @@ define void @trunc16i32_16i16_nuw(<16 x i32> %a) {
 ;
 ; AVX1-LABEL: trunc16i32_16i16_nuw:
 ; AVX1:       # %bb.0: # %entry
-; AVX1-NEXT:    vbroadcastss {{.*#+}} ymm2 = [65535,65535,65535,65535,65535,65535,65535,65535]
-; AVX1-NEXT:    vandps %ymm2, %ymm0, %ymm0
-; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm3
-; AVX1-NEXT:    vpackusdw %xmm3, %xmm0, %xmm0
-; AVX1-NEXT:    vandps %ymm2, %ymm1, %ymm1
+; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm2
+; AVX1-NEXT:    vpackusdw %xmm2, %xmm0, %xmm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm2
 ; AVX1-NEXT:    vpackusdw %xmm2, %xmm1, %xmm1
 ; AVX1-NEXT:    vmovdqu %xmm1, (%rax)
@@ -800,9 +624,6 @@ define void @trunc16i32_16i16_nuw(<16 x i32> %a) {
 ;
 ; AVX2-LABEL: trunc16i32_16i16_nuw:
 ; AVX2:       # %bb.0: # %entry
-; AVX2-NEXT:    vpxor %xmm2, %xmm2, %xmm2
-; AVX2-NEXT:    vpblendw {{.*#+}} ymm1 = ymm1[0],ymm2[1],ymm1[2],ymm2[3],ymm1[4],ymm2[5],ymm1[6],ymm2[7],ymm1[8],ymm2[9],ymm1[10],ymm2[11],ymm1[12],ymm2[13],ymm1[14],ymm2[15]
-; AVX2-NEXT:    vpblendw {{.*#+}} ymm0 = ymm0[0],ymm2[1],ymm0[2],ymm2[3],ymm0[4],ymm2[5],ymm0[6],ymm2[7],ymm0[8],ymm2[9],ymm0[10],ymm2[11],ymm0[12],ymm2[13],ymm0[14],ymm2[15]
 ; AVX2-NEXT:    vpackusdw %ymm1, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,1,3]
 ; AVX2-NEXT:    vmovdqu %ymm0, (%rax)
@@ -823,12 +644,7 @@ entry:
 define void @trunc16i32_16i8_nsw(<16 x i32> %a) {
 ; SSE2-SSSE3-LABEL: trunc16i32_16i8_nsw:
 ; SSE2-SSSE3:       # %bb.0: # %entry
-; SSE2-SSSE3-NEXT:    movdqa {{.*#+}} xmm4 = [255,0,0,0,255,0,0,0,255,0,0,0,255,0,0,0]
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm3
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm2
 ; SSE2-SSSE3-NEXT:    packuswb %xmm3, %xmm2
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm1
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm0
 ; SSE2-SSSE3-NEXT:    packuswb %xmm1, %xmm0
 ; SSE2-SSSE3-NEXT:    packuswb %xmm2, %xmm0
 ; SSE2-SSSE3-NEXT:    movdqu %xmm0, (%rax)
@@ -836,12 +652,7 @@ define void @trunc16i32_16i8_nsw(<16 x i32> %a) {
 ;
 ; SSE41-LABEL: trunc16i32_16i8_nsw:
 ; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pmovzxbd {{.*#+}} xmm4 = [255,255,255,255]
-; SSE41-NEXT:    pand %xmm4, %xmm3
-; SSE41-NEXT:    pand %xmm4, %xmm2
 ; SSE41-NEXT:    packusdw %xmm3, %xmm2
-; SSE41-NEXT:    pand %xmm4, %xmm1
-; SSE41-NEXT:    pand %xmm4, %xmm0
 ; SSE41-NEXT:    packusdw %xmm1, %xmm0
 ; SSE41-NEXT:    packuswb %xmm2, %xmm0
 ; SSE41-NEXT:    movdqu %xmm0, (%rax)
@@ -849,11 +660,8 @@ define void @trunc16i32_16i8_nsw(<16 x i32> %a) {
 ;
 ; AVX1-LABEL: trunc16i32_16i8_nsw:
 ; AVX1:       # %bb.0: # %entry
-; AVX1-NEXT:    vbroadcastss {{.*#+}} ymm2 = [255,255,255,255,255,255,255,255]
-; AVX1-NEXT:    vandps %ymm2, %ymm1, %ymm1
-; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm3
-; AVX1-NEXT:    vpackusdw %xmm3, %xmm1, %xmm1
-; AVX1-NEXT:    vandps %ymm2, %ymm0, %ymm0
+; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm2
+; AVX1-NEXT:    vpackusdw %xmm2, %xmm1, %xmm1
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm2
 ; AVX1-NEXT:    vpackusdw %xmm2, %xmm0, %xmm0
 ; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
@@ -863,9 +671,6 @@ define void @trunc16i32_16i8_nsw(<16 x i32> %a) {
 ;
 ; AVX2-LABEL: trunc16i32_16i8_nsw:
 ; AVX2:       # %bb.0: # %entry
-; AVX2-NEXT:    vpbroadcastd {{.*#+}} ymm2 = [255,0,0,0,255,0,0,0,255,0,0,0,255,0,0,0,255,0,0,0,255,0,0,0,255,0,0,0,255,0,0,0]
-; AVX2-NEXT:    vpand %ymm2, %ymm1, %ymm1
-; AVX2-NEXT:    vpand %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpackusdw %ymm1, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
 ; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
@@ -888,12 +693,7 @@ entry:
 define void @trunc16i32_16i8_nuw(<16 x i32> %a) {
 ; SSE2-SSSE3-LABEL: trunc16i32_16i8_nuw:
 ; SSE2-SSSE3:       # %bb.0: # %entry
-; SSE2-SSSE3-NEXT:    movdqa {{.*#+}} xmm4 = [255,0,0,0,255,0,0,0,255,0,0,0,255,0,0,0]
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm3
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm2
 ; SSE2-SSSE3-NEXT:    packuswb %xmm3, %xmm2
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm1
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm0
 ; SSE2-SSSE3-NEXT:    packuswb %xmm1, %xmm0
 ; SSE2-SSSE3-NEXT:    packuswb %xmm2, %xmm0
 ; SSE2-SSSE3-NEXT:    movdqu %xmm0, (%rax)
@@ -901,12 +701,7 @@ define void @trunc16i32_16i8_nuw(<16 x i32> %a) {
 ;
 ; SSE41-LABEL: trunc16i32_16i8_nuw:
 ; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pmovzxbd {{.*#+}} xmm4 = [255,255,255,255]
-; SSE41-NEXT:    pand %xmm4, %xmm3
-; SSE41-NEXT:    pand %xmm4, %xmm2
 ; SSE41-NEXT:    packusdw %xmm3, %xmm2
-; SSE41-NEXT:    pand %xmm4, %xmm1
-; SSE41-NEXT:    pand %xmm4, %xmm0
 ; SSE41-NEXT:    packusdw %xmm1, %xmm0
 ; SSE41-NEXT:    packuswb %xmm2, %xmm0
 ; SSE41-NEXT:    movdqu %xmm0, (%rax)
@@ -914,11 +709,8 @@ define void @trunc16i32_16i8_nuw(<16 x i32> %a) {
 ;
 ; AVX1-LABEL: trunc16i32_16i8_nuw:
 ; AVX1:       # %bb.0: # %entry
-; AVX1-NEXT:    vbroadcastss {{.*#+}} ymm2 = [255,255,255,255,255,255,255,255]
-; AVX1-NEXT:    vandps %ymm2, %ymm1, %ymm1
-; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm3
-; AVX1-NEXT:    vpackusdw %xmm3, %xmm1, %xmm1
-; AVX1-NEXT:    vandps %ymm2, %ymm0, %ymm0
+; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm2
+; AVX1-NEXT:    vpackusdw %xmm2, %xmm1, %xmm1
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm2
 ; AVX1-NEXT:    vpackusdw %xmm2, %xmm0, %xmm0
 ; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
@@ -928,9 +720,6 @@ define void @trunc16i32_16i8_nuw(<16 x i32> %a) {
 ;
 ; AVX2-LABEL: trunc16i32_16i8_nuw:
 ; AVX2:       # %bb.0: # %entry
-; AVX2-NEXT:    vpbroadcastd {{.*#+}} ymm2 = [255,0,0,0,255,0,0,0,255,0,0,0,255,0,0,0,255,0,0,0,255,0,0,0,255,0,0,0,255,0,0,0]
-; AVX2-NEXT:    vpand %ymm2, %ymm1, %ymm1
-; AVX2-NEXT:    vpand %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpackusdw %ymm1, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
 ; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
@@ -951,38 +740,24 @@ entry:
 }
 
 define void @trunc16i16_16i8_nsw(<16 x i16> %a) {
-; SSE2-SSSE3-LABEL: trunc16i16_16i8_nsw:
-; SSE2-SSSE3:       # %bb.0: # %entry
-; SSE2-SSSE3-NEXT:    movdqa {{.*#+}} xmm2 = [255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0]
-; SSE2-SSSE3-NEXT:    pand %xmm2, %xmm1
-; SSE2-SSSE3-NEXT:    pand %xmm2, %xmm0
-; SSE2-SSSE3-NEXT:    packuswb %xmm1, %xmm0
-; SSE2-SSSE3-NEXT:    movdqu %xmm0, (%rax)
-; SSE2-SSSE3-NEXT:    retq
-;
-; SSE41-LABEL: trunc16i16_16i8_nsw:
-; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pmovzxbw {{.*#+}} xmm2 = [255,255,255,255,255,255,255,255]
-; SSE41-NEXT:    pand %xmm2, %xmm1
-; SSE41-NEXT:    pand %xmm2, %xmm0
-; SSE41-NEXT:    packuswb %xmm1, %xmm0
-; SSE41-NEXT:    movdqu %xmm0, (%rax)
-; SSE41-NEXT:    retq
+; SSE-LABEL: trunc16i16_16i8_nsw:
+; SSE:       # %bb.0: # %entry
+; SSE-NEXT:    packsswb %xmm1, %xmm0
+; SSE-NEXT:    movdqu %xmm0, (%rax)
+; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc16i16_16i8_nsw:
 ; AVX1:       # %bb.0: # %entry
-; AVX1-NEXT:    vandps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %ymm0, %ymm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
-; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
+; AVX1-NEXT:    vpacksswb %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vmovdqu %xmm0, (%rax)
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc16i16_16i8_nsw:
 ; AVX2:       # %bb.0: # %entry
-; AVX2-NEXT:    vpand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
+; AVX2-NEXT:    vpacksswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vmovdqu %xmm0, (%rax)
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
@@ -1021,27 +796,14 @@ entry:
 }
 
 define void @trunc16i16_16i8_nuw(<16 x i16> %a) {
-; SSE2-SSSE3-LABEL: trunc16i16_16i8_nuw:
-; SSE2-SSSE3:       # %bb.0: # %entry
-; SSE2-SSSE3-NEXT:    movdqa {{.*#+}} xmm2 = [255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0]
-; SSE2-SSSE3-NEXT:    pand %xmm2, %xmm1
-; SSE2-SSSE3-NEXT:    pand %xmm2, %xmm0
-; SSE2-SSSE3-NEXT:    packuswb %xmm1, %xmm0
-; SSE2-SSSE3-NEXT:    movdqu %xmm0, (%rax)
-; SSE2-SSSE3-NEXT:    retq
-;
-; SSE41-LABEL: trunc16i16_16i8_nuw:
-; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pmovzxbw {{.*#+}} xmm2 = [255,255,255,255,255,255,255,255]
-; SSE41-NEXT:    pand %xmm2, %xmm1
-; SSE41-NEXT:    pand %xmm2, %xmm0
-; SSE41-NEXT:    packuswb %xmm1, %xmm0
-; SSE41-NEXT:    movdqu %xmm0, (%rax)
-; SSE41-NEXT:    retq
+; SSE-LABEL: trunc16i16_16i8_nuw:
+; SSE:       # %bb.0: # %entry
+; SSE-NEXT:    packuswb %xmm1, %xmm0
+; SSE-NEXT:    movdqu %xmm0, (%rax)
+; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc16i16_16i8_nuw:
 ; AVX1:       # %bb.0: # %entry
-; AVX1-NEXT:    vandps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %ymm0, %ymm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
 ; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vmovdqu %xmm0, (%rax)
@@ -1050,7 +812,6 @@ define void @trunc16i16_16i8_nuw(<16 x i16> %a) {
 ;
 ; AVX2-LABEL: trunc16i16_16i8_nuw:
 ; AVX2:       # %bb.0: # %entry
-; AVX2-NEXT:    vpand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
 ; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vmovdqu %xmm0, (%rax)
@@ -1091,41 +852,20 @@ entry:
 }
 
 define void @trunc32i16_32i8_nsw(<32 x i16> %a) {
-; SSE2-SSSE3-LABEL: trunc32i16_32i8_nsw:
-; SSE2-SSSE3:       # %bb.0: # %entry
-; SSE2-SSSE3-NEXT:    movdqa {{.*#+}} xmm4 = [255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0]
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm1
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm0
-; SSE2-SSSE3-NEXT:    packuswb %xmm1, %xmm0
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm3
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm2
-; SSE2-SSSE3-NEXT:    packuswb %xmm3, %xmm2
-; SSE2-SSSE3-NEXT:    movdqu %xmm2, (%rax)
-; SSE2-SSSE3-NEXT:    movdqu %xmm0, (%rax)
-; SSE2-SSSE3-NEXT:    retq
-;
-; SSE41-LABEL: trunc32i16_32i8_nsw:
-; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pmovzxbw {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
-; SSE41-NEXT:    pand %xmm4, %xmm1
-; SSE41-NEXT:    pand %xmm4, %xmm0
-; SSE41-NEXT:    packuswb %xmm1, %xmm0
-; SSE41-NEXT:    pand %xmm4, %xmm3
-; SSE41-NEXT:    pand %xmm4, %xmm2
-; SSE41-NEXT:    packuswb %xmm3, %xmm2
-; SSE41-NEXT:    movdqu %xmm2, (%rax)
-; SSE41-NEXT:    movdqu %xmm0, (%rax)
-; SSE41-NEXT:    retq
+; SSE-LABEL: trunc32i16_32i8_nsw:
+; SSE:       # %bb.0: # %entry
+; SSE-NEXT:    packsswb %xmm1, %xmm0
+; SSE-NEXT:    packsswb %xmm3, %xmm2
+; SSE-NEXT:    movdqu %xmm2, (%rax)
+; SSE-NEXT:    movdqu %xmm0, (%rax)
+; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc32i16_32i8_nsw:
 ; AVX1:       # %bb.0: # %entry
-; AVX1-NEXT:    vbroadcastss {{.*#+}} ymm2 = [255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]
-; AVX1-NEXT:    vandps %ymm2, %ymm0, %ymm0
-; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm3
-; AVX1-NEXT:    vpackuswb %xmm3, %xmm0, %xmm0
-; AVX1-NEXT:    vandps %ymm2, %ymm1, %ymm1
+; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm2
+; AVX1-NEXT:    vpacksswb %xmm2, %xmm0, %xmm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm2
-; AVX1-NEXT:    vpackuswb %xmm2, %xmm1, %xmm1
+; AVX1-NEXT:    vpacksswb %xmm2, %xmm1, %xmm1
 ; AVX1-NEXT:    vmovdqu %xmm1, (%rax)
 ; AVX1-NEXT:    vmovdqu %xmm0, (%rax)
 ; AVX1-NEXT:    vzeroupper
@@ -1133,10 +873,7 @@ define void @trunc32i16_32i8_nsw(<32 x i16> %a) {
 ;
 ; AVX2-LABEL: trunc32i16_32i8_nsw:
 ; AVX2:       # %bb.0: # %entry
-; AVX2-NEXT:    vpbroadcastw {{.*#+}} ymm2 = [255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0]
-; AVX2-NEXT:    vpand %ymm2, %ymm1, %ymm1
-; AVX2-NEXT:    vpand %ymm2, %ymm0, %ymm0
-; AVX2-NEXT:    vpackuswb %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpacksswb %ymm1, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,1,3]
 ; AVX2-NEXT:    vmovdqu %ymm0, (%rax)
 ; AVX2-NEXT:    vzeroupper
@@ -1180,41 +917,20 @@ entry:
 }
 
 define void @trunc32i16_32i8_nuw(<32 x i16> %a) {
-; SSE2-SSSE3-LABEL: trunc32i16_32i8_nuw:
-; SSE2-SSSE3:       # %bb.0: # %entry
-; SSE2-SSSE3-NEXT:    movdqa {{.*#+}} xmm4 = [255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0]
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm1
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm0
-; SSE2-SSSE3-NEXT:    packuswb %xmm1, %xmm0
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm3
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm2
-; SSE2-SSSE3-NEXT:    packuswb %xmm3, %xmm2
-; SSE2-SSSE3-NEXT:    movdqu %xmm2, (%rax)
-; SSE2-SSSE3-NEXT:    movdqu %xmm0, (%rax)
-; SSE2-SSSE3-NEXT:    retq
-;
-; SSE41-LABEL: trunc32i16_32i8_nuw:
-; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pmovzxbw {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
-; SSE41-NEXT:    pand %xmm4, %xmm1
-; SSE41-NEXT:    pand %xmm4, %xmm0
-; SSE41-NEXT:    packuswb %xmm1, %xmm0
-; SSE41-NEXT:    pand %xmm4, %xmm3
-; SSE41-NEXT:    pand %xmm4, %xmm2
-; SSE41-NEXT:    packuswb %xmm3, %xmm2
-; SSE41-NEXT:    movdqu %xmm2, (%rax)
-; SSE41-NEXT:    movdqu %xmm0, (%rax)
-; SSE41-NEXT:    retq
+; SSE-LABEL: trunc32i16_32i8_nuw:
+; SSE:       # %bb.0: # %entry
+; SSE-NEXT:    packsswb %xmm1, %xmm0
+; SSE-NEXT:    packsswb %xmm3, %xmm2
+; SSE-NEXT:    movdqu %xmm2, (%rax)
+; SSE-NEXT:    movdqu %xmm0, (%rax)
+; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc32i16_32i8_nuw:
 ; AVX1:       # %bb.0: # %entry
-; AVX1-NEXT:    vbroadcastss {{.*#+}} ymm2 = [255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]
-; AVX1-NEXT:    vandps %ymm2, %ymm0, %ymm0
-; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm3
-; AVX1-NEXT:    vpackuswb %xmm3, %xmm0, %xmm0
-; AVX1-NEXT:    vandps %ymm2, %ymm1, %ymm1
+; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm2
+; AVX1-NEXT:    vpacksswb %xmm2, %xmm0, %xmm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm2
-; AVX1-NEXT:    vpackuswb %xmm2, %xmm1, %xmm1
+; AVX1-NEXT:    vpacksswb %xmm2, %xmm1, %xmm1
 ; AVX1-NEXT:    vmovdqu %xmm1, (%rax)
 ; AVX1-NEXT:    vmovdqu %xmm0, (%rax)
 ; AVX1-NEXT:    vzeroupper
@@ -1222,10 +938,7 @@ define void @trunc32i16_32i8_nuw(<32 x i16> %a) {
 ;
 ; AVX2-LABEL: trunc32i16_32i8_nuw:
 ; AVX2:       # %bb.0: # %entry
-; AVX2-NEXT:    vpbroadcastw {{.*#+}} ymm2 = [255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0]
-; AVX2-NEXT:    vpand %ymm2, %ymm1, %ymm1
-; AVX2-NEXT:    vpand %ymm2, %ymm0, %ymm0
-; AVX2-NEXT:    vpackuswb %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpacksswb %ymm1, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,1,3]
 ; AVX2-NEXT:    vmovdqu %ymm0, (%rax)
 ; AVX2-NEXT:    vzeroupper
@@ -1369,54 +1082,30 @@ entry:
 }
 
 define <8 x i16> @trunc2x4i64_8i16_nsw(<4 x i64> %a, <4 x i64> %b) {
-; SSE2-SSSE3-LABEL: trunc2x4i64_8i16_nsw:
-; SSE2-SSSE3:       # %bb.0: # %entry
-; SSE2-SSSE3-NEXT:    shufps {{.*#+}} xmm0 = xmm0[0,2],xmm1[0,2]
-; SSE2-SSSE3-NEXT:    pslld $16, %xmm0
-; SSE2-SSSE3-NEXT:    psrad $16, %xmm0
-; SSE2-SSSE3-NEXT:    shufps {{.*#+}} xmm2 = xmm2[0,2],xmm3[0,2]
-; SSE2-SSSE3-NEXT:    pslld $16, %xmm2
-; SSE2-SSSE3-NEXT:    psrad $16, %xmm2
-; SSE2-SSSE3-NEXT:    packssdw %xmm2, %xmm0
-; SSE2-SSSE3-NEXT:    retq
-;
-; SSE41-LABEL: trunc2x4i64_8i16_nsw:
-; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pxor %xmm4, %xmm4
-; SSE41-NEXT:    pblendw {{.*#+}} xmm1 = xmm1[0],xmm4[1,2,3],xmm1[4],xmm4[5,6,7]
-; SSE41-NEXT:    pblendw {{.*#+}} xmm0 = xmm0[0],xmm4[1,2,3],xmm0[4],xmm4[5,6,7]
-; SSE41-NEXT:    packusdw %xmm1, %xmm0
-; SSE41-NEXT:    pblendw {{.*#+}} xmm3 = xmm3[0],xmm4[1,2,3],xmm3[4],xmm4[5,6,7]
-; SSE41-NEXT:    pblendw {{.*#+}} xmm2 = xmm2[0],xmm4[1,2,3],xmm2[4],xmm4[5,6,7]
-; SSE41-NEXT:    packusdw %xmm3, %xmm2
-; SSE41-NEXT:    packusdw %xmm2, %xmm0
-; SSE41-NEXT:    retq
+; SSE-LABEL: trunc2x4i64_8i16_nsw:
+; SSE:       # %bb.0: # %entry
+; SSE-NEXT:    packssdw %xmm1, %xmm0
+; SSE-NEXT:    packssdw %xmm3, %xmm2
+; SSE-NEXT:    packssdw %xmm2, %xmm0
+; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc2x4i64_8i16_nsw:
 ; AVX1:       # %bb.0: # %entry
-; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm2
-; AVX1-NEXT:    vpxor %xmm3, %xmm3, %xmm3
-; AVX1-NEXT:    vpblendw {{.*#+}} xmm2 = xmm2[0],xmm3[1,2,3],xmm2[4],xmm3[5,6,7]
-; AVX1-NEXT:    vpblendw {{.*#+}} xmm1 = xmm1[0],xmm3[1,2,3],xmm1[4],xmm3[5,6,7]
-; AVX1-NEXT:    vpackusdw %xmm2, %xmm1, %xmm1
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm2
-; AVX1-NEXT:    vpblendw {{.*#+}} xmm2 = xmm2[0],xmm3[1,2,3],xmm2[4],xmm3[5,6,7]
-; AVX1-NEXT:    vpblendw {{.*#+}} xmm0 = xmm0[0],xmm3[1,2,3],xmm0[4],xmm3[5,6,7]
-; AVX1-NEXT:    vpackusdw %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpackusdw %xmm1, %xmm0, %xmm0
+; AVX1-NEXT:    vpackssdw %xmm2, %xmm0, %xmm0
+; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm2
+; AVX1-NEXT:    vpackssdw %xmm2, %xmm1, %xmm1
+; AVX1-NEXT:    vpackssdw %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc2x4i64_8i16_nsw:
 ; AVX2:       # %bb.0: # %entry
-; AVX2-NEXT:    vpxor %xmm2, %xmm2, %xmm2
-; AVX2-NEXT:    vpblendw {{.*#+}} ymm1 = ymm1[0],ymm2[1,2,3],ymm1[4],ymm2[5,6,7],ymm1[8],ymm2[9,10,11],ymm1[12],ymm2[13,14,15]
-; AVX2-NEXT:    vextracti128 $1, %ymm1, %xmm3
-; AVX2-NEXT:    vpackusdw %xmm3, %xmm1, %xmm1
-; AVX2-NEXT:    vpblendw {{.*#+}} ymm0 = ymm0[0],ymm2[1,2,3],ymm0[4],ymm2[5,6,7],ymm0[8],ymm2[9,10,11],ymm0[12],ymm2[13,14,15]
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm2
-; AVX2-NEXT:    vpackusdw %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpackusdw %xmm1, %xmm0, %xmm0
+; AVX2-NEXT:    vpackssdw %xmm2, %xmm0, %xmm0
+; AVX2-NEXT:    vextracti128 $1, %ymm1, %xmm2
+; AVX2-NEXT:    vpackssdw %xmm2, %xmm1, %xmm1
+; AVX2-NEXT:    vpackssdw %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
@@ -1476,40 +1165,27 @@ define <8 x i16> @trunc2x4i64_8i16_nuw(<4 x i64> %a, <4 x i64> %b) {
 ;
 ; SSE41-LABEL: trunc2x4i64_8i16_nuw:
 ; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pxor %xmm4, %xmm4
-; SSE41-NEXT:    pblendw {{.*#+}} xmm1 = xmm1[0],xmm4[1,2,3],xmm1[4],xmm4[5,6,7]
-; SSE41-NEXT:    pblendw {{.*#+}} xmm0 = xmm0[0],xmm4[1,2,3],xmm0[4],xmm4[5,6,7]
 ; SSE41-NEXT:    packusdw %xmm1, %xmm0
-; SSE41-NEXT:    pblendw {{.*#+}} xmm3 = xmm3[0],xmm4[1,2,3],xmm3[4],xmm4[5,6,7]
-; SSE41-NEXT:    pblendw {{.*#+}} xmm2 = xmm2[0],xmm4[1,2,3],xmm2[4],xmm4[5,6,7]
 ; SSE41-NEXT:    packusdw %xmm3, %xmm2
 ; SSE41-NEXT:    packusdw %xmm2, %xmm0
 ; SSE41-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc2x4i64_8i16_nuw:
 ; AVX1:       # %bb.0: # %entry
-; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm2
-; AVX1-NEXT:    vpxor %xmm3, %xmm3, %xmm3
-; AVX1-NEXT:    vpblendw {{.*#+}} xmm2 = xmm2[0],xmm3[1,2,3],xmm2[4],xmm3[5,6,7]
-; AVX1-NEXT:    vpblendw {{.*#+}} xmm1 = xmm1[0],xmm3[1,2,3],xmm1[4],xmm3[5,6,7]
-; AVX1-NEXT:    vpackusdw %xmm2, %xmm1, %xmm1
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm2
-; AVX1-NEXT:    vpblendw {{.*#+}} xmm2 = xmm2[0],xmm3[1,2,3],xmm2[4],xmm3[5,6,7]
-; AVX1-NEXT:    vpblendw {{.*#+}} xmm0 = xmm0[0],xmm3[1,2,3],xmm0[4],xmm3[5,6,7]
 ; AVX1-NEXT:    vpackusdw %xmm2, %xmm0, %xmm0
+; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm2
+; AVX1-NEXT:    vpackusdw %xmm2, %xmm1, %xmm1
 ; AVX1-NEXT:    vpackusdw %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc2x4i64_8i16_nuw:
 ; AVX2:       # %bb.0: # %entry
-; AVX2-NEXT:    vpxor %xmm2, %xmm2, %xmm2
-; AVX2-NEXT:    vpblendw {{.*#+}} ymm1 = ymm1[0],ymm2[1,2,3],ymm1[4],ymm2[5,6,7],ymm1[8],ymm2[9,10,11],ymm1[12],ymm2[13,14,15]
-; AVX2-NEXT:    vextracti128 $1, %ymm1, %xmm3
-; AVX2-NEXT:    vpackusdw %xmm3, %xmm1, %xmm1
-; AVX2-NEXT:    vpblendw {{.*#+}} ymm0 = ymm0[0],ymm2[1,2,3],ymm0[4],ymm2[5,6,7],ymm0[8],ymm2[9,10,11],ymm0[12],ymm2[13,14,15]
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm2
 ; AVX2-NEXT:    vpackusdw %xmm2, %xmm0, %xmm0
+; AVX2-NEXT:    vextracti128 $1, %ymm1, %xmm2
+; AVX2-NEXT:    vpackusdw %xmm2, %xmm1, %xmm1
 ; AVX2-NEXT:    vpackusdw %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
@@ -1643,72 +1319,20 @@ entry:
 }
 
 define <8 x i16> @trunc2x4i32_8i16_nsw(<4 x i32> %a, <4 x i32> %b) {
-; SSE2-LABEL: trunc2x4i32_8i16_nsw:
-; SSE2:       # %bb.0: # %entry
-; SSE2-NEXT:    pslld $16, %xmm1
-; SSE2-NEXT:    psrad $16, %xmm1
-; SSE2-NEXT:    pslld $16, %xmm0
-; SSE2-NEXT:    psrad $16, %xmm0
-; SSE2-NEXT:    packssdw %xmm1, %xmm0
-; SSE2-NEXT:    retq
-;
-; SSSE3-LABEL: trunc2x4i32_8i16_nsw:
-; SSSE3:       # %bb.0: # %entry
-; SSSE3-NEXT:    movdqa {{.*#+}} xmm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15]
-; SSSE3-NEXT:    pshufb %xmm2, %xmm1
-; SSSE3-NEXT:    pshufb %xmm2, %xmm0
-; SSSE3-NEXT:    punpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
-; SSSE3-NEXT:    retq
-;
-; SSE41-LABEL: trunc2x4i32_8i16_nsw:
-; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pxor %xmm2, %xmm2
-; SSE41-NEXT:    pblendw {{.*#+}} xmm1 = xmm1[0],xmm2[1],xmm1[2],xmm2[3],xmm1[4],xmm2[5],xmm1[6],xmm2[7]
-; SSE41-NEXT:    pblendw {{.*#+}} xmm0 = xmm0[0],xmm2[1],xmm0[2],xmm2[3],xmm0[4],xmm2[5],xmm0[6],xmm2[7]
-; SSE41-NEXT:    packusdw %xmm1, %xmm0
-; SSE41-NEXT:    retq
+; SSE-LABEL: trunc2x4i32_8i16_nsw:
+; SSE:       # %bb.0: # %entry
+; SSE-NEXT:    packssdw %xmm1, %xmm0
+; SSE-NEXT:    retq
 ;
 ; AVX-LABEL: trunc2x4i32_8i16_nsw:
 ; AVX:       # %bb.0: # %entry
-; AVX-NEXT:    vpxor %xmm2, %xmm2, %xmm2
-; AVX-NEXT:    vpblendw {{.*#+}} xmm1 = xmm1[0],xmm2[1],xmm1[2],xmm2[3],xmm1[4],xmm2[5],xmm1[6],xmm2[7]
-; AVX-NEXT:    vpblendw {{.*#+}} xmm0 = xmm0[0],xmm2[1],xmm0[2],xmm2[3],xmm0[4],xmm2[5],xmm0[6],xmm2[7]
-; AVX-NEXT:    vpackusdw %xmm1, %xmm0, %xmm0
+; AVX-NEXT:    vpackssdw %xmm1, %xmm0, %xmm0
 ; AVX-NEXT:    retq
 ;
-; AVX512F-LABEL: trunc2x4i32_8i16_nsw:
-; AVX512F:       # %bb.0: # %entry
-; AVX512F-NEXT:    # kill: def $xmm0 killed $xmm0 def $ymm0
-; AVX512F-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
-; AVX512F-NEXT:    vpmovdw %zmm0, %ymm0
-; AVX512F-NEXT:    # kill: def $xmm0 killed $xmm0 killed $ymm0
-; AVX512F-NEXT:    vzeroupper
-; AVX512F-NEXT:    retq
-;
-; AVX512VL-LABEL: trunc2x4i32_8i16_nsw:
-; AVX512VL:       # %bb.0: # %entry
-; AVX512VL-NEXT:    # kill: def $xmm0 killed $xmm0 def $ymm0
-; AVX512VL-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
-; AVX512VL-NEXT:    vpmovdw %ymm0, %xmm0
-; AVX512VL-NEXT:    vzeroupper
-; AVX512VL-NEXT:    retq
-;
-; AVX512BW-LABEL: trunc2x4i32_8i16_nsw:
-; AVX512BW:       # %bb.0: # %entry
-; AVX512BW-NEXT:    # kill: def $xmm0 killed $xmm0 def $ymm0
-; AVX512BW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
-; AVX512BW-NEXT:    vpmovdw %zmm0, %ymm0
-; AVX512BW-NEXT:    # kill: def $xmm0 killed $xmm0 killed $ymm0
-; AVX512BW-NEXT:    vzeroupper
-; AVX512BW-NEXT:    retq
-;
-; AVX512BWVL-LABEL: trunc2x4i32_8i16_nsw:
-; AVX512BWVL:       # %bb.0: # %entry
-; AVX512BWVL-NEXT:    # kill: def $xmm0 killed $xmm0 def $ymm0
-; AVX512BWVL-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
-; AVX512BWVL-NEXT:    vpmovdw %ymm0, %xmm0
-; AVX512BWVL-NEXT:    vzeroupper
-; AVX512BWVL-NEXT:    retq
+; AVX512-LABEL: trunc2x4i32_8i16_nsw:
+; AVX512:       # %bb.0: # %entry
+; AVX512-NEXT:    vpackssdw %xmm1, %xmm0, %xmm0
+; AVX512-NEXT:    retq
 entry:
   %0 = trunc nsw <4 x i32> %a to <4 x i16>
   %1 = trunc nsw <4 x i32> %b to <4 x i16>
@@ -1736,53 +1360,18 @@ define <8 x i16> @trunc2x4i32_8i16_nuw(<4 x i32> %a, <4 x i32> %b) {
 ;
 ; SSE41-LABEL: trunc2x4i32_8i16_nuw:
 ; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pxor %xmm2, %xmm2
-; SSE41-NEXT:    pblendw {{.*#+}} xmm1 = xmm1[0],xmm2[1],xmm1[2],xmm2[3],xmm1[4],xmm2[5],xmm1[6],xmm2[7]
-; SSE41-NEXT:    pblendw {{.*#+}} xmm0 = xmm0[0],xmm2[1],xmm0[2],xmm2[3],xmm0[4],xmm2[5],xmm0[6],xmm2[7]
 ; SSE41-NEXT:    packusdw %xmm1, %xmm0
 ; SSE41-NEXT:    retq
 ;
 ; AVX-LABEL: trunc2x4i32_8i16_nuw:
 ; AVX:       # %bb.0: # %entry
-; AVX-NEXT:    vpxor %xmm2, %xmm2, %xmm2
-; AVX-NEXT:    vpblendw {{.*#+}} xmm1 = xmm1[0],xmm2[1],xmm1[2],xmm2[3],xmm1[4],xmm2[5],xmm1[6],xmm2[7]
-; AVX-NEXT:    vpblendw {{.*#+}} xmm0 = xmm0[0],xmm2[1],xmm0[2],xmm2[3],xmm0[4],xmm2[5],xmm0[6],xmm2[7]
 ; AVX-NEXT:    vpackusdw %xmm1, %xmm0, %xmm0
 ; AVX-NEXT:    retq
 ;
-; AVX512F-LABEL: trunc2x4i32_8i16_nuw:
-; AVX512F:       # %bb.0: # %entry
-; AVX512F-NEXT:    # kill: def $xmm0 killed $xmm0 def $ymm0
-; AVX512F-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
-; AVX512F-NEXT:    vpmovdw %zmm0, %ymm0
-; AVX512F-NEXT:    # kill: def $xmm0 killed $xmm0 killed $ymm0
-; AVX512F-NEXT:    vzeroupper
-; AVX512F-NEXT:    retq
-;
-; AVX512VL-LABEL: trunc2x4i32_8i16_nuw:
-; AVX512VL:       # %bb.0: # %entry
-; AVX512VL-NEXT:    # kill: def $xmm0 killed $xmm0 def $ymm0
-; AVX512VL-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
-; AVX512VL-NEXT:    vpmovdw %ymm0, %xmm0
-; AVX512VL-NEXT:    vzeroupper
-; AVX512VL-NEXT:    retq
-;
-; AVX512BW-LABEL: trunc2x4i32_8i16_nuw:
-; AVX512BW:       # %bb.0: # %entry
-; AVX512BW-NEXT:    # kill: def $xmm0 killed $xmm0 def $ymm0
-; AVX512BW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
-; AVX512BW-NEXT:    vpmovdw %zmm0, %ymm0
-; AVX512BW-NEXT:    # kill: def $xmm0 killed $xmm0 killed $ymm0
-; AVX512BW-NEXT:    vzeroupper
-; AVX512BW-NEXT:    retq
-;
-; AVX512BWVL-LABEL: trunc2x4i32_8i16_nuw:
-; AVX512BWVL:       # %bb.0: # %entry
-; AVX512BWVL-NEXT:    # kill: def $xmm0 killed $xmm0 def $ymm0
-; AVX512BWVL-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
-; AVX512BWVL-NEXT:    vpmovdw %ymm0, %xmm0
-; AVX512BWVL-NEXT:    vzeroupper
-; AVX512BWVL-NEXT:    retq
+; AVX512-LABEL: trunc2x4i32_8i16_nuw:
+; AVX512:       # %bb.0: # %entry
+; AVX512-NEXT:    vpackusdw %xmm1, %xmm0, %xmm0
+; AVX512-NEXT:    retq
 entry:
   %0 = trunc nuw <4 x i32> %a to <4 x i16>
   %1 = trunc nuw <4 x i32> %b to <4 x i16>
@@ -1791,48 +1380,25 @@ entry:
 }
 
 define <32 x i8> @trunc2x16i16_32i8_nsw(<16 x i16> %a, <16 x i16> %b) {
-; SSE2-SSSE3-LABEL: trunc2x16i16_32i8_nsw:
-; SSE2-SSSE3:       # %bb.0: # %entry
-; SSE2-SSSE3-NEXT:    movdqa {{.*#+}} xmm4 = [255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0]
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm1
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm0
-; SSE2-SSSE3-NEXT:    packuswb %xmm1, %xmm0
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm3
-; SSE2-SSSE3-NEXT:    pand %xmm2, %xmm4
-; SSE2-SSSE3-NEXT:    packuswb %xmm3, %xmm4
-; SSE2-SSSE3-NEXT:    movdqa %xmm4, %xmm1
-; SSE2-SSSE3-NEXT:    retq
-;
-; SSE41-LABEL: trunc2x16i16_32i8_nsw:
-; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pmovzxbw {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
-; SSE41-NEXT:    pand %xmm4, %xmm1
-; SSE41-NEXT:    pand %xmm4, %xmm0
-; SSE41-NEXT:    packuswb %xmm1, %xmm0
-; SSE41-NEXT:    pand %xmm4, %xmm3
-; SSE41-NEXT:    pand %xmm2, %xmm4
-; SSE41-NEXT:    packuswb %xmm3, %xmm4
-; SSE41-NEXT:    movdqa %xmm4, %xmm1
-; SSE41-NEXT:    retq
+; SSE-LABEL: trunc2x16i16_32i8_nsw:
+; SSE:       # %bb.0: # %entry
+; SSE-NEXT:    packsswb %xmm1, %xmm0
+; SSE-NEXT:    packsswb %xmm3, %xmm2
+; SSE-NEXT:    movdqa %xmm2, %xmm1
+; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc2x16i16_32i8_nsw:
 ; AVX1:       # %bb.0: # %entry
-; AVX1-NEXT:    vbroadcastss {{.*#+}} ymm2 = [255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]
-; AVX1-NEXT:    vandps %ymm2, %ymm0, %ymm0
-; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm3
-; AVX1-NEXT:    vpackuswb %xmm3, %xmm0, %xmm0
-; AVX1-NEXT:    vandps %ymm2, %ymm1, %ymm1
+; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm2
+; AVX1-NEXT:    vpacksswb %xmm2, %xmm0, %xmm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm2
-; AVX1-NEXT:    vpackuswb %xmm2, %xmm1, %xmm1
+; AVX1-NEXT:    vpacksswb %xmm2, %xmm1, %xmm1
 ; AVX1-NEXT:    vinsertf128 $1, %xmm1, %ymm0, %ymm0
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc2x16i16_32i8_nsw:
 ; AVX2:       # %bb.0: # %entry
-; AVX2-NEXT:    vpbroadcastw {{.*#+}} ymm2 = [255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]
-; AVX2-NEXT:    vpand %ymm2, %ymm0, %ymm0
-; AVX2-NEXT:    vpand %ymm2, %ymm1, %ymm1
-; AVX2-NEXT:    vpackuswb %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpacksswb %ymm1, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,1,3]
 ; AVX2-NEXT:    retq
 ;
@@ -1875,37 +1441,17 @@ entry:
 }
 
 define <32 x i8> @trunc2x16i16_32i8_nuw(<16 x i16> %a, <16 x i16> %b) {
-; SSE2-SSSE3-LABEL: trunc2x16i16_32i8_nuw:
-; SSE2-SSSE3:       # %bb.0: # %entry
-; SSE2-SSSE3-NEXT:    movdqa {{.*#+}} xmm4 = [255,0,255,0,255,0,255,0,255,0,255,0,255,0,255,0]
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm1
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm0
-; SSE2-SSSE3-NEXT:    packuswb %xmm1, %xmm0
-; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm3
-; SSE2-SSSE3-NEXT:    pand %xmm2, %xmm4
-; SSE2-SSSE3-NEXT:    packuswb %xmm3, %xmm4
-; SSE2-SSSE3-NEXT:    movdqa %xmm4, %xmm1
-; SSE2-SSSE3-NEXT:    retq
-;
-; SSE41-LABEL: trunc2x16i16_32i8_nuw:
-; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pmovzxbw {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
-; SSE41-NEXT:    pand %xmm4, %xmm1
-; SSE41-NEXT:    pand %xmm4, %xmm0
-; SSE41-NEXT:    packuswb %xmm1, %xmm0
-; SSE41-NEXT:    pand %xmm4, %xmm3
-; SSE41-NEXT:    pand %xmm2, %xmm4
-; SSE41-NEXT:    packuswb %xmm3, %xmm4
-; SSE41-NEXT:    movdqa %xmm4, %xmm1
-; SSE41-NEXT:    retq
+; SSE-LABEL: trunc2x16i16_32i8_nuw:
+; SSE:       # %bb.0: # %entry
+; SSE-NEXT:    packuswb %xmm1, %xmm0
+; SSE-NEXT:    packuswb %xmm3, %xmm2
+; SSE-NEXT:    movdqa %xmm2, %xmm1
+; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc2x16i16_32i8_nuw:
 ; AVX1:       # %bb.0: # %entry
-; AVX1-NEXT:    vbroadcastss {{.*#+}} ymm2 = [255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]
-; AVX1-NEXT:    vandps %ymm2, %ymm0, %ymm0
-; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm3
-; AVX1-NEXT:    vpackuswb %xmm3, %xmm0, %xmm0
-; AVX1-NEXT:    vandps %ymm2, %ymm1, %ymm1
+; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm2
+; AVX1-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm2
 ; AVX1-NEXT:    vpackuswb %xmm2, %xmm1, %xmm1
 ; AVX1-NEXT:    vinsertf128 $1, %xmm1, %ymm0, %ymm0
@@ -1913,9 +1459,6 @@ define <32 x i8> @trunc2x16i16_32i8_nuw(<16 x i16> %a, <16 x i16> %b) {
 ;
 ; AVX2-LABEL: trunc2x16i16_32i8_nuw:
 ; AVX2:       # %bb.0: # %entry
-; AVX2-NEXT:    vpbroadcastw {{.*#+}} ymm2 = [255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]
-; AVX2-NEXT:    vpand %ymm2, %ymm0, %ymm0
-; AVX2-NEXT:    vpand %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpackuswb %ymm1, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,1,3]
 ; AVX2-NEXT:    retq
@@ -1959,70 +1502,20 @@ entry:
 }
 
 define <16 x i8> @trunc2x8i16_16i8_nsw(<8 x i16> %a, <8 x i16> %b) {
-; SSE2-SSSE3-LABEL: trunc2x8i16_16i8_nsw:
-; SSE2-SSSE3:       # %bb.0: # %entry
-; SSE2-SSSE3-NEXT:    movdqa {{.*#+}} xmm2 = [255,255,255,255,255,255,255,255]
-; SSE2-SSSE3-NEXT:    pand %xmm2, %xmm1
-; SSE2-SSSE3-NEXT:    pand %xmm2, %xmm0
-; SSE2-SSSE3-NEXT:    packuswb %xmm1, %xmm0
-; SSE2-SSSE3-NEXT:    retq
-;
-; SSE41-LABEL: trunc2x8i16_16i8_nsw:
-; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pmovzxbw {{.*#+}} xmm2 = [255,255,255,255,255,255,255,255]
-; SSE41-NEXT:    pand %xmm2, %xmm1
-; SSE41-NEXT:    pand %xmm2, %xmm0
-; SSE41-NEXT:    packuswb %xmm1, %xmm0
-; SSE41-NEXT:    retq
-;
-; AVX1-LABEL: trunc2x8i16_16i8_nsw:
-; AVX1:       # %bb.0: # %entry
-; AVX1-NEXT:    vbroadcastss {{.*#+}} xmm2 = [255,255,255,255,255,255,255,255]
-; AVX1-NEXT:    vpand %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpand %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
-; AVX1-NEXT:    retq
-;
-; AVX2-LABEL: trunc2x8i16_16i8_nsw:
-; AVX2:       # %bb.0: # %entry
-; AVX2-NEXT:    vpbroadcastw {{.*#+}} xmm2 = [255,255,255,255,255,255,255,255]
-; AVX2-NEXT:    vpand %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpand %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
-; AVX2-NEXT:    retq
-;
-; AVX512F-LABEL: trunc2x8i16_16i8_nsw:
-; AVX512F:       # %bb.0: # %entry
-; AVX512F-NEXT:    vpbroadcastw {{.*#+}} xmm2 = [255,255,255,255,255,255,255,255]
-; AVX512F-NEXT:    vpand %xmm2, %xmm1, %xmm1
-; AVX512F-NEXT:    vpand %xmm2, %xmm0, %xmm0
-; AVX512F-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
-; AVX512F-NEXT:    retq
-;
-; AVX512VL-LABEL: trunc2x8i16_16i8_nsw:
-; AVX512VL:       # %bb.0: # %entry
-; AVX512VL-NEXT:    vpbroadcastd {{.*#+}} xmm2 = [255,255,255,255,255,255,255,255]
-; AVX512VL-NEXT:    vpand %xmm2, %xmm1, %xmm1
-; AVX512VL-NEXT:    vpand %xmm2, %xmm0, %xmm0
-; AVX512VL-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
-; AVX512VL-NEXT:    retq
+; SSE-LABEL: trunc2x8i16_16i8_nsw:
+; SSE:       # %bb.0: # %entry
+; SSE-NEXT:    packsswb %xmm1, %xmm0
+; SSE-NEXT:    retq
 ;
-; AVX512BW-LABEL: trunc2x8i16_16i8_nsw:
-; AVX512BW:       # %bb.0: # %entry
-; AVX512BW-NEXT:    # kill: def $xmm0 killed $xmm0 def $ymm0
-; AVX512BW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
-; AVX512BW-NEXT:    vpmovwb %zmm0, %ymm0
-; AVX512BW-NEXT:    # kill: def $xmm0 killed $xmm0 killed $ymm0
-; AVX512BW-NEXT:    vzeroupper
-; AVX512BW-NEXT:    retq
+; AVX-LABEL: trunc2x8i16_16i8_nsw:
+; AVX:       # %bb.0: # %entry
+; AVX-NEXT:    vpacksswb %xmm1, %xmm0, %xmm0
+; AVX-NEXT:    retq
 ;
-; AVX512BWVL-LABEL: trunc2x8i16_16i8_nsw:
-; AVX512BWVL:       # %bb.0: # %entry
-; AVX512BWVL-NEXT:    # kill: def $xmm0 killed $xmm0 def $ymm0
-; AVX512BWVL-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
-; AVX512BWVL-NEXT:    vpmovwb %ymm0, %xmm0
-; AVX512BWVL-NEXT:    vzeroupper
-; AVX512BWVL-NEXT:    retq
+; AVX512-LABEL: trunc2x8i16_16i8_nsw:
+; AVX512:       # %bb.0: # %entry
+; AVX512-NEXT:    vpacksswb %xmm1, %xmm0, %xmm0
+; AVX512-NEXT:    retq
 entry:
   %0 = trunc nsw <8 x i16> %a to <8 x i8>
   %1 = trunc nsw <8 x i16> %b to <8 x i8>
@@ -2031,70 +1524,20 @@ entry:
 }
 
 define <16 x i8> @trunc2x8i16_16i8_nuw(<8 x i16> %a, <8 x i16> %b) {
-; SSE2-SSSE3-LABEL: trunc2x8i16_16i8_nuw:
-; SSE2-SSSE3:       # %bb.0: # %entry
-; SSE2-SSSE3-NEXT:    movdqa {{.*#+}} xmm2 = [255,255,255,255,255,255,255,255]
-; SSE2-SSSE3-NEXT:    pand %xmm2, %xmm1
-; SSE2-SSSE3-NEXT:    pand %xmm2, %xmm0
-; SSE2-SSSE3-NEXT:    packuswb %xmm1, %xmm0
-; SSE2-SSSE3-NEXT:    retq
-;
-; SSE41-LABEL: trunc2x8i16_16i8_nuw:
-; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pmovzxbw {{.*#+}} xmm2 = [255,255,255,255,255,255,255,255]
-; SSE41-NEXT:    pand %xmm2, %xmm1
-; SSE41-NEXT:    pand %xmm2, %xmm0
-; SSE41-NEXT:    packuswb %xmm1, %xmm0
-; SSE41-NEXT:    retq
-;
-; AVX1-LABEL: trunc2x8i16_16i8_nuw:
-; AVX1:       # %bb.0: # %entry
-; AVX1-NEXT:    vbroadcastss {{.*#+}} xmm2 = [255,255,255,255,255,255,255,255]
-; AVX1-NEXT:    vpand %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpand %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
-; AVX1-NEXT:    retq
-;
-; AVX2-LABEL: trunc2x8i16_16i8_nuw:
-; AVX2:       # %bb.0: # %entry
-; AVX2-NEXT:    vpbroadcastw {{.*#+}} xmm2 = [255,255,255,255,255,255,255,255]
-; AVX2-NEXT:    vpand %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpand %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
-; AVX2-NEXT:    retq
-;
-; AVX512F-LABEL: trunc2x8i16_16i8_nuw:
-; AVX512F:       # %bb.0: # %entry
-; AVX512F-NEXT:    vpbroadcastw {{.*#+}} xmm2 = [255,255,255,255,255,255,255,255]
-; AVX512F-NEXT:    vpand %xmm2, %xmm1, %xmm1
-; AVX512F-NEXT:    vpand %xmm2, %xmm0, %xmm0
-; AVX512F-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
-; AVX512F-NEXT:    retq
-;
-; AVX512VL-LABEL: trunc2x8i16_16i8_nuw:
-; AVX512VL:       # %bb.0: # %entry
-; AVX512VL-NEXT:    vpbroadcastd {{.*#+}} xmm2 = [255,255,255,255,255,255,255,255]
-; AVX512VL-NEXT:    vpand %xmm2, %xmm1, %xmm1
-; AVX512VL-NEXT:    vpand %xmm2, %xmm0, %xmm0
-; AVX512VL-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
-; AVX512VL-NEXT:    retq
+; SSE-LABEL: trunc2x8i16_16i8_nuw:
+; SSE:       # %bb.0: # %entry
+; SSE-NEXT:    packuswb %xmm1, %xmm0
+; SSE-NEXT:    retq
 ;
-; AVX512BW-LABEL: trunc2x8i16_16i8_nuw:
-; AVX512BW:       # %bb.0: # %entry
-; AVX512BW-NEXT:    # kill: def $xmm0 killed $xmm0 def $ymm0
-; AVX512BW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
-; AVX512BW-NEXT:    vpmovwb %zmm0, %ymm0
-; AVX512BW-NEXT:    # kill: def $xmm0 killed $xmm0 killed $ymm0
-; AVX512BW-NEXT:    vzeroupper
-; AVX512BW-NEXT:    retq
+; AVX-LABEL: trunc2x8i16_16i8_nuw:
+; AVX:       # %bb.0: # %entry
+; AVX-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
+; AVX-NEXT:    retq
 ;
-; AVX512BWVL-LABEL: trunc2x8i16_16i8_nuw:
-; AVX512BWVL:       # %bb.0: # %entry
-; AVX512BWVL-NEXT:    # kill: def $xmm0 killed $xmm0 def $ymm0
-; AVX512BWVL-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
-; AVX512BWVL-NEXT:    vpmovwb %ymm0, %xmm0
-; AVX512BWVL-NEXT:    vzeroupper
-; AVX512BWVL-NEXT:    retq
+; AVX512-LABEL: trunc2x8i16_16i8_nuw:
+; AVX512:       # %bb.0: # %entry
+; AVX512-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
+; AVX512-NEXT:    retq
 entry:
   %0 = trunc nuw <8 x i16> %a to <8 x i8>
   %1 = trunc nuw <8 x i16> %b to <8 x i8>
@@ -2103,54 +1546,23 @@ entry:
 }
 
 define i64 @trunc8i16_i64_nsw(<8 x i16> %inval) {
-; SSE2-LABEL: trunc8i16_i64_nsw:
-; SSE2:       # %bb.0: # %entry
-; SSE2-NEXT:    pand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
-; SSE2-NEXT:    packuswb %xmm0, %xmm0
-; SSE2-NEXT:    movq %xmm0, %rax
-; SSE2-NEXT:    retq
-;
-; SSSE3-LABEL: trunc8i16_i64_nsw:
-; SSSE3:       # %bb.0: # %entry
-; SSSE3-NEXT:    pshufb {{.*#+}} xmm0 = xmm0[0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u]
-; SSSE3-NEXT:    movq %xmm0, %rax
-; SSSE3-NEXT:    retq
-;
-; SSE41-LABEL: trunc8i16_i64_nsw:
-; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pshufb {{.*#+}} xmm0 = xmm0[0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u]
-; SSE41-NEXT:    movq %xmm0, %rax
-; SSE41-NEXT:    retq
+; SSE-LABEL: trunc8i16_i64_nsw:
+; SSE:       # %bb.0: # %entry
+; SSE-NEXT:    packsswb %xmm0, %xmm0
+; SSE-NEXT:    movq %xmm0, %rax
+; SSE-NEXT:    retq
 ;
 ; AVX-LABEL: trunc8i16_i64_nsw:
 ; AVX:       # %bb.0: # %entry
-; AVX-NEXT:    vpshufb {{.*#+}} xmm0 = xmm0[0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u]
+; AVX-NEXT:    vpacksswb %xmm0, %xmm0, %xmm0
 ; AVX-NEXT:    vmovq %xmm0, %rax
 ; AVX-NEXT:    retq
 ;
-; AVX512F-LABEL: trunc8i16_i64_nsw:
-; AVX512F:       # %bb.0: # %entry
-; AVX512F-NEXT:    vpshufb {{.*#+}} xmm0 = xmm0[0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u]
-; AVX512F-NEXT:    vmovq %xmm0, %rax
-; AVX512F-NEXT:    retq
-;
-; AVX512VL-LABEL: trunc8i16_i64_nsw:
-; AVX512VL:       # %bb.0: # %entry
-; AVX512VL-NEXT:    vpshufb {{.*#+}} xmm0 = xmm0[0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u]
-; AVX512VL-NEXT:    vmovq %xmm0, %rax
-; AVX512VL-NEXT:    retq
-;
-; AVX512BW-LABEL: trunc8i16_i64_nsw:
-; AVX512BW:       # %bb.0: # %entry
-; AVX512BW-NEXT:    vpshufb {{.*#+}} xmm0 = xmm0[0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u]
-; AVX512BW-NEXT:    vmovq %xmm0, %rax
-; AVX512BW-NEXT:    retq
-;
-; AVX512BWVL-LABEL: trunc8i16_i64_nsw:
-; AVX512BWVL:       # %bb.0: # %entry
-; AVX512BWVL-NEXT:    vpmovwb %xmm0, %xmm0
-; AVX512BWVL-NEXT:    vmovq %xmm0, %rax
-; AVX512BWVL-NEXT:    retq
+; AVX512-LABEL: trunc8i16_i64_nsw:
+; AVX512:       # %bb.0: # %entry
+; AVX512-NEXT:    vpacksswb %xmm0, %xmm0, %xmm0
+; AVX512-NEXT:    vmovq %xmm0, %rax
+; AVX512-NEXT:    retq
 entry:
   %0 = trunc nsw <8 x i16> %inval to <8 x i8>
   %1 = bitcast <8 x i8> %0 to i64
@@ -2158,54 +1570,23 @@ entry:
 }
 
 define i64 @trunc8i16_i64_nuw(<8 x i16> %inval) {
-; SSE2-LABEL: trunc8i16_i64_nuw:
-; SSE2:       # %bb.0: # %entry
-; SSE2-NEXT:    pand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
-; SSE2-NEXT:    packuswb %xmm0, %xmm0
-; SSE2-NEXT:    movq %xmm0, %rax
-; SSE2-NEXT:    retq
-;
-; SSSE3-LABEL: trunc8i16_i64_nuw:
-; SSSE3:       # %bb.0: # %entry
-; SSSE3-NEXT:    pshufb {{.*#+}} xmm0 = xmm0[0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u]
-; SSSE3-NEXT:    movq %xmm0, %rax
-; SSSE3-NEXT:    retq
-;
-; SSE41-LABEL: trunc8i16_i64_nuw:
-; SSE41:       # %bb.0: # %entry
-; SSE41-NEXT:    pshufb {{.*#+}} xmm0 = xmm0[0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u]
-; SSE41-NEXT:    movq %xmm0, %rax
-; SSE41-NEXT:    retq
+; SSE-LABEL: trunc8i16_i64_nuw:
+; SSE:       # %bb.0: # %entry
+; SSE-NEXT:    packuswb %xmm0, %xmm0
+; SSE-NEXT:    movq %xmm0, %rax
+; SSE-NEXT:    retq
 ;
 ; AVX-LABEL: trunc8i16_i64_nuw:
 ; AVX:       # %bb.0: # %entry
-; AVX-NEXT:    vpshufb {{.*#+}} xmm0 = xmm0[0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u]
+; AVX-NEXT:    vpackuswb %xmm0, %xmm0, %xmm0
 ; AVX-NEXT:    vmovq %xmm0, %rax
 ; AVX-NEXT:    retq
 ;
-; AVX512F-LABEL: trunc8i16_i64_nuw:
-; AVX512F:       # %bb.0: # %entry
-; AVX512F-NEXT:    vpshufb {{.*#+}} xmm0 = xmm0[0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u]
-; AVX512F-NEXT:    vmovq %xmm0, %rax
-; AVX512F-NEXT:    retq
-;
-; AVX512VL-LABEL: trunc8i16_i64_nuw:
-; AVX512VL:       # %bb.0: # %entry
-; AVX512VL-NEXT:    vpshufb {{.*#+}} xmm0 = xmm0[0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u]
-; AVX512VL-NEXT:    vmovq %xmm0, %rax
-; AVX512VL-NEXT:    retq
-;
-; AVX512BW-LABEL: trunc8i16_i64_nuw:
-; AVX512BW:       # %bb.0: # %entry
-; AVX512BW-NEXT:    vpshufb {{.*#+}} xmm0 = xmm0[0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u]
-; AVX512BW-NEXT:    vmovq %xmm0, %rax
-; AVX512BW-NEXT:    retq
-;
-; AVX512BWVL-LABEL: trunc8i16_i64_nuw:
-; AVX512BWVL:       # %bb.0: # %entry
-; AVX512BWVL-NEXT:    vpmovwb %xmm0, %xmm0
-; AVX512BWVL-NEXT:    vmovq %xmm0, %rax
-; AVX512BWVL-NEXT:    retq
+; AVX512-LABEL: trunc8i16_i64_nuw:
+; AVX512:       # %bb.0: # %entry
+; AVX512-NEXT:    vpackuswb %xmm0, %xmm0, %xmm0
+; AVX512-NEXT:    vmovq %xmm0, %rax
+; AVX512-NEXT:    retq
 entry:
   %0 = trunc nuw <8 x i16> %inval to <8 x i8>
   %1 = bitcast <8 x i8> %0 to i64