Use VT::getHalfNumVectorElementsVT helpers in a few places. NFCI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@369751 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/AArch64/AArch64ISelLowering.cpp b/lib/Target/AArch64/AArch64ISelLowering.cpp
index 84cd8398588bbf413fcb399b25b43e7dcd063646..be248ee898c443b33d30ca38973d5eacc6556af6 100644 (file)
--- a/lib/Target/AArch64/AArch64ISelLowering.cpp
+++ b/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -6541,8 +6541,7 @@ static SDValue tryFormConcatFromShuffle(SDValue Op, SelectionDAG &DAG) {
   if (!isConcatMask(Mask, VT, SplitV0))
     return SDValue();
 
-  EVT CastVT = EVT::getVectorVT(*DAG.getContext(), VT.getVectorElementType(),
-                                VT.getVectorNumElements() / 2);
+  EVT CastVT = VT.getHalfNumVectorElementsVT(*DAG.getContext());
   if (SplitV0) {
     V0 = DAG.getNode(ISD::EXTRACT_SUBVECTOR, DL, CastVT, V0,
                      DAG.getConstant(0, DL, MVT::i64));
@@ -10610,10 +10609,10 @@ static SDValue splitStores(SDNode *N, TargetLowering::DAGCombinerInfo &DCI,
     return ReplacedSplat;
 
   SDLoc DL(S);
-  unsigned NumElts = VT.getVectorNumElements() / 2;
+
   // Split VT into two.
-  EVT HalfVT =
-      EVT::getVectorVT(*DAG.getContext(), VT.getVectorElementType(), NumElts);
+  EVT HalfVT = VT.getHalfNumVectorElementsVT(*DAG.getContext());
+  unsigned NumElts = HalfVT.getVectorNumElements();
   SDValue SubVector0 = DAG.getNode(ISD::EXTRACT_SUBVECTOR, DL, HalfVT, StVal,
                                    DAG.getConstant(0, DL, MVT::i64));
   SDValue SubVector1 = DAG.getNode(ISD::EXTRACT_SUBVECTOR, DL, HalfVT, StVal,

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 7b47be5c3fd8c15053f4d4d8ceb31dc1c6b75523..1a986bc8ce7bf7301209a9ae1b976db81cfb431b 100644 (file)
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -26543,8 +26543,7 @@ static SDValue LowerBITCAST(SDValue Op, const X86Subtarget &Subtarget,
     SDLoc dl(Op);
     SDValue Lo, Hi;
     std::tie(Lo, Hi) = DAG.SplitVector(Op.getOperand(0), dl);
-    EVT CastVT = MVT::getVectorVT(DstVT.getVectorElementType(),
-                                  DstVT.getVectorNumElements() / 2);
+    MVT CastVT = DstVT.getHalfNumVectorElementsVT();
     Lo = DAG.getBitcast(CastVT, Lo);
     Hi = DAG.getBitcast(CastVT, Hi);
     return DAG.getNode(ISD::CONCAT_VECTORS, dl, DstVT, Lo, Hi);
@@ -27845,9 +27844,7 @@ void X86TargetLowering::ReplaceNodeResults(SDNode *N,
       // since sign_extend_inreg i8/i16->i64 requires an extend to i32 using
       // sra. Then extending from i32 to i64 using pcmpgt. By custom splitting
       // we allow the sra from the extend to i32 to be shared by the split.
-      EVT ExtractVT = EVT::getVectorVT(*DAG.getContext(),
-                                       InVT.getVectorElementType(),
-                                       InVT.getVectorNumElements() / 2);
+      EVT ExtractVT = InVT.getHalfNumVectorElementsVT(*DAG.getContext());
       MVT ExtendVT = MVT::getVectorVT(MVT::i32,
                                       VT.getVectorNumElements());
       In = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, ExtractVT,