remove llvm specific code

farzonl · farzonl · commit 5f637aa262d1 · 2024-05-04T00:00:14.000-04:00
diff --git a/llvm/docs/GlobalISel/GenericOpcode.rst b/llvm/docs/GlobalISel/GenericOpcode.rst
@@ -592,8 +592,8 @@ G_FLOG, G_FLOG2, G_FLOG10
 
 Calculate the base-e, base-2, or base-10 respectively.
 
-G_FCEIL, G_FCOS, G_FSIN, G_FTAN, G_FSQRT, G_FFLOOR, G_FRINT, G_FNEARBYINT
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+G_FCEIL, G_FCOS, G_FSIN, G_FSQRT, G_FFLOOR, G_FRINT, G_FNEARBYINT
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 These correspond to the standard C functions of the same name.
 
diff --git a/llvm/include/llvm/Analysis/VecFuncs.def b/llvm/include/llvm/Analysis/VecFuncs.def
@@ -54,7 +54,6 @@ TLI_DEFINE_VECFUNC("llvm.sin.f32", "vsinf", FIXED(4), "_ZGV_LLVM_N4v")
 TLI_DEFINE_VECFUNC("cosf", "vcosf", FIXED(4), "_ZGV_LLVM_N4v")
 TLI_DEFINE_VECFUNC("llvm.cos.f32", "vcosf", FIXED(4), "_ZGV_LLVM_N4v")
 TLI_DEFINE_VECFUNC("tanf", "vtanf", FIXED(4), "_ZGV_LLVM_N4v")
-TLI_DEFINE_VECFUNC("llvm.tan.f32", "vtanf", FIXED(4), "_ZGV_LLVM_N4v")
 TLI_DEFINE_VECFUNC("asinf", "vasinf", FIXED(4), "_ZGV_LLVM_N4v")
 TLI_DEFINE_VECFUNC("acosf", "vacosf", FIXED(4), "_ZGV_LLVM_N4v")
 TLI_DEFINE_VECFUNC("atanf", "vatanf", FIXED(4), "_ZGV_LLVM_N4v")
diff --git a/llvm/include/llvm/CodeGen/BasicTTIImpl.h b/llvm/include/llvm/CodeGen/BasicTTIImpl.h
@@ -1924,9 +1924,6 @@ class BasicTTIImplBase : public TargetTransformInfoImplCRTPBase<T> {
     case Intrinsic::cos:
       ISD = ISD::FCOS;
       break;
-    case Intrinsic::tan:
-      ISD = ISD::FTAN;
-      break;
     case Intrinsic::exp:
       ISD = ISD::FEXP;
       break;
diff --git a/llvm/include/llvm/CodeGen/ISDOpcodes.h b/llvm/include/llvm/CodeGen/ISDOpcodes.h
@@ -415,7 +415,6 @@ enum NodeType {
   STRICT_FLDEXP,
   STRICT_FSIN,
   STRICT_FCOS,
-  STRICT_FTAN,
   STRICT_FEXP,
   STRICT_FEXP2,
   STRICT_FLOG,
@@ -935,7 +934,6 @@ enum NodeType {
   FCBRT,
   FSIN,
   FCOS,
-  FTAN,
   FPOW,
   FPOWI,
   /// FLDEXP - ldexp, inspired by libm (op0 * 2**op1).
diff --git a/llvm/include/llvm/IR/RuntimeLibcalls.def b/llvm/include/llvm/IR/RuntimeLibcalls.def
@@ -197,11 +197,6 @@ HANDLE_LIBCALL(COS_F64, "cos")
 HANDLE_LIBCALL(COS_F80, "cosl")
 HANDLE_LIBCALL(COS_F128, "cosl")
 HANDLE_LIBCALL(COS_PPCF128, "cosl")
-HANDLE_LIBCALL(TAN_F32, "tanf")
-HANDLE_LIBCALL(TAN_F64, "tan")
-HANDLE_LIBCALL(TAN_F80, "tanl")
-HANDLE_LIBCALL(TAN_F128,"tanl")
-HANDLE_LIBCALL(TAN_PPCF128, "tanl")
 HANDLE_LIBCALL(SINCOS_F32, nullptr)
 HANDLE_LIBCALL(SINCOS_F64, nullptr)
 HANDLE_LIBCALL(SINCOS_F80, nullptr)
diff --git a/llvm/include/llvm/Support/TargetOpcodes.def b/llvm/include/llvm/Support/TargetOpcodes.def
@@ -781,9 +781,6 @@ HANDLE_TARGET_OPCODE(G_FCOS)
 /// Floating point sine.
 HANDLE_TARGET_OPCODE(G_FSIN)
 
-/// Floating point Tangent.
-HANDLE_TARGET_OPCODE(G_FTAN)
-
 /// Floating point square root.
 HANDLE_TARGET_OPCODE(G_FSQRT)
 
diff --git a/llvm/include/llvm/Target/GenericOpcodes.td b/llvm/include/llvm/Target/GenericOpcodes.td
@@ -988,13 +988,6 @@ def G_FSIN : GenericInstruction {
   let hasSideEffects = false;
 }
 
-// Floating point tangent of a value.
-def G_FTAN : GenericInstruction {
-  let OutOperandList = (outs type0:$dst);
-  let InOperandList = (ins type0:$src1);
-  let hasSideEffects = false;
-}
-
 // Floating point square root of a value.
 // This returns NaN for negative nonzero values.
 // NOTE: Unlike libm sqrt(), this never sets errno. In all other respects it's
diff --git a/llvm/include/llvm/Target/GlobalISel/SelectionDAGCompat.td b/llvm/include/llvm/Target/GlobalISel/SelectionDAGCompat.td
@@ -148,7 +148,6 @@ def : GINodeEquiv<G_BUILD_VECTOR, build_vector>;
 def : GINodeEquiv<G_FCEIL, fceil>;
 def : GINodeEquiv<G_FCOS, fcos>;
 def : GINodeEquiv<G_FSIN, fsin>;
-def : GINodeEquiv<G_FTAN, ftan>;
 def : GINodeEquiv<G_FABS, fabs>;
 def : GINodeEquiv<G_FSQRT, fsqrt>;
 def : GINodeEquiv<G_FFLOOR, ffloor>;
diff --git a/llvm/include/llvm/Target/TargetSelectionDAG.td b/llvm/include/llvm/Target/TargetSelectionDAG.td
@@ -509,7 +509,6 @@ def fneg       : SDNode<"ISD::FNEG"       , SDTFPUnaryOp>;
 def fsqrt      : SDNode<"ISD::FSQRT"      , SDTFPUnaryOp>;
 def fsin       : SDNode<"ISD::FSIN"       , SDTFPUnaryOp>;
 def fcos       : SDNode<"ISD::FCOS"       , SDTFPUnaryOp>;
-def ftan       : SDNode<"ISD::FTAN"       , SDTFPUnaryOp>;
 def fexp2      : SDNode<"ISD::FEXP2"      , SDTFPUnaryOp>;
 def fexp10     : SDNode<"ISD::FEXP10"     , SDTFPUnaryOp>;
 def fpow       : SDNode<"ISD::FPOW"       , SDTFPBinOp>;
@@ -563,8 +562,6 @@ def strict_fsin       : SDNode<"ISD::STRICT_FSIN",
                                SDTFPUnaryOp, [SDNPHasChain]>;
 def strict_fcos       : SDNode<"ISD::STRICT_FCOS",
                                SDTFPUnaryOp, [SDNPHasChain]>;
-def strict_ftan       : SDNode<"ISD::STRICT_FTAN",
-                               SDTFPUnaryOp, [SDNPHasChain]>;
 def strict_fexp2      : SDNode<"ISD::STRICT_FEXP2",
                                SDTFPUnaryOp, [SDNPHasChain]>;
 def strict_fpow       : SDNode<"ISD::STRICT_FPOW",
@@ -1517,9 +1514,6 @@ def any_fsin       : PatFrags<(ops node:$src),
 def any_fcos       : PatFrags<(ops node:$src),
                               [(strict_fcos node:$src),
                                (fcos node:$src)]>;
-def any_ftan       : PatFrags<(ops node:$src),
-                              [(strict_ftan node:$src),
-                               (ftan node:$src)]>;
 def any_fexp2      : PatFrags<(ops node:$src),
                               [(strict_fexp2 node:$src),
                                (fexp2 node:$src)]>;
diff --git a/llvm/lib/Analysis/VectorUtils.cpp b/llvm/lib/Analysis/VectorUtils.cpp
@@ -68,7 +68,6 @@ bool llvm::isTriviallyVectorizable(Intrinsic::ID ID) {
   case Intrinsic::sqrt: // Begin floating-point.
   case Intrinsic::sin:
   case Intrinsic::cos:
-  case Intrinsic::tan:
   case Intrinsic::exp:
   case Intrinsic::exp2:
   case Intrinsic::log:
diff --git a/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp b/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
@@ -1945,8 +1945,6 @@ unsigned IRTranslator::getSimpleIntrinsicOpcode(Intrinsic::ID ID) {
       return TargetOpcode::G_FSIN;
     case Intrinsic::sqrt:
       return TargetOpcode::G_FSQRT;
-    case Intrinsic::tan:
-      return TargetOpcode::G_FTAN;
     case Intrinsic::trunc:
       return TargetOpcode::G_INTRINSIC_TRUNC;
     case Intrinsic::readcyclecounter:
diff --git a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
@@ -448,8 +448,6 @@ static RTLIB::Libcall getRTLibDesc(unsigned Opcode, unsigned Size) {
     RTLIBCASE(SIN_F);
   case TargetOpcode::G_FCOS:
     RTLIBCASE(COS_F);
-  case TargetOpcode::G_FTAN:
-    RTLIBCASE(TAN_F);
   case TargetOpcode::G_FLOG10:
     RTLIBCASE(LOG10_F);
   case TargetOpcode::G_FLOG:
@@ -1038,7 +1036,6 @@ LegalizerHelper::libcall(MachineInstr &MI, LostDebugLocObserver &LocObserver) {
   case TargetOpcode::G_FREM:
   case TargetOpcode::G_FCOS:
   case TargetOpcode::G_FSIN:
-  case TargetOpcode::G_FTAN:
   case TargetOpcode::G_FLOG10:
   case TargetOpcode::G_FLOG:
   case TargetOpcode::G_FLOG2:
@@ -2893,7 +2890,6 @@ LegalizerHelper::widenScalar(MachineInstr &MI, unsigned TypeIdx, LLT WideTy) {
   case TargetOpcode::G_FFLOOR:
   case TargetOpcode::G_FCOS:
   case TargetOpcode::G_FSIN:
-  case TargetOpcode::G_FTAN:
   case TargetOpcode::G_FLOG10:
   case TargetOpcode::G_FLOG:
   case TargetOpcode::G_FLOG2:
@@ -4660,7 +4656,6 @@ LegalizerHelper::fewerElementsVector(MachineInstr &MI, unsigned TypeIdx,
   case G_INTRINSIC_TRUNC:
   case G_FCOS:
   case G_FSIN:
-  case G_FTAN:
   case G_FSQRT:
   case G_BSWAP:
   case G_BITREVERSE:
diff --git a/llvm/lib/CodeGen/GlobalISel/Utils.cpp b/llvm/lib/CodeGen/GlobalISel/Utils.cpp
@@ -821,7 +821,6 @@ bool llvm::isKnownNeverNaN(Register Val, const MachineRegisterInfo &MRI,
   case TargetOpcode::G_FREM:
   case TargetOpcode::G_FSIN:
   case TargetOpcode::G_FCOS:
-  case TargetOpcode::G_FTAN:
   case TargetOpcode::G_FMA:
   case TargetOpcode::G_FMAD:
     if (SNaN)
@@ -1702,7 +1701,6 @@ bool llvm::isPreISelGenericFloatingPointOpcode(unsigned Opc) {
   case TargetOpcode::G_FREM:
   case TargetOpcode::G_FRINT:
   case TargetOpcode::G_FSIN:
-  case TargetOpcode::G_FTAN:
   case TargetOpcode::G_FSQRT:
   case TargetOpcode::G_FSUB:
   case TargetOpcode::G_INTRINSIC_ROUND:
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -4483,11 +4483,6 @@ void SelectionDAGLegalize::ConvertNodeToLibcall(SDNode *Node) {
                     RTLIB::COS_F80, RTLIB::COS_F128,
                     RTLIB::COS_PPCF128, Results);
     break;
-  case ISD::FTAN:
-  case ISD::STRICT_FTAN:
-    ExpandFPLibCall(Node, RTLIB::TAN_F32, RTLIB::TAN_F64, RTLIB::TAN_F80,
-                    RTLIB::TAN_F128, RTLIB::TAN_PPCF128, Results);
-    break;
   case ISD::FSINCOS:
     // Expand into sincos libcall.
     ExpandSinCosLibCall(Node, Results);
@@ -5437,7 +5432,6 @@ void SelectionDAGLegalize::PromoteNode(SDNode *Node) {
   case ISD::FSQRT:
   case ISD::FSIN:
   case ISD::FCOS:
-  case ISD::FTAN:
   case ISD::FLOG:
   case ISD::FLOG2:
   case ISD::FLOG10:
@@ -5462,7 +5456,6 @@ void SelectionDAGLegalize::PromoteNode(SDNode *Node) {
   case ISD::STRICT_FSQRT:
   case ISD::STRICT_FSIN:
   case ISD::STRICT_FCOS:
-  case ISD::STRICT_FTAN:
   case ISD::STRICT_FLOG:
   case ISD::STRICT_FLOG2:
   case ISD::STRICT_FLOG10:
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
@@ -131,8 +131,6 @@ void DAGTypeLegalizer::SoftenFloatResult(SDNode *N, unsigned ResNo) {
     case ISD::FSQRT:       R = SoftenFloatRes_FSQRT(N); break;
     case ISD::STRICT_FSUB:
     case ISD::FSUB:        R = SoftenFloatRes_FSUB(N); break;
-    case ISD::STRICT_FTAN:
-    case ISD::FTAN:        R = SoftenFloatRes_FTAN(N); break;
     case ISD::STRICT_FTRUNC:
     case ISD::FTRUNC:      R = SoftenFloatRes_FTRUNC(N); break;
     case ISD::LOAD:        R = SoftenFloatRes_LOAD(N); break;
@@ -776,12 +774,6 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FSUB(SDNode *N) {
                                                RTLIB::SUB_PPCF128));
 }
 
-SDValue DAGTypeLegalizer::SoftenFloatRes_FTAN(SDNode *N) {
-  return SoftenFloatRes_Unary(
-      N, GetFPLibCall(N->getValueType(0), RTLIB::TAN_F32, RTLIB::TAN_F64,
-                      RTLIB::TAN_F80, RTLIB::TAN_F128, RTLIB::TAN_PPCF128));
-}
-
 SDValue DAGTypeLegalizer::SoftenFloatRes_FTRUNC(SDNode *N) {
   return SoftenFloatRes_Unary(N, GetFPLibCall(N->getValueType(0),
                                               RTLIB::TRUNC_F32,
@@ -1407,10 +1399,6 @@ void DAGTypeLegalizer::ExpandFloatResult(SDNode *N, unsigned ResNo) {
   case ISD::FSQRT:      ExpandFloatRes_FSQRT(N, Lo, Hi); break;
   case ISD::STRICT_FSUB:
   case ISD::FSUB:       ExpandFloatRes_FSUB(N, Lo, Hi); break;
-  case ISD::STRICT_FTAN:
-  case ISD::FTAN:
-    ExpandFloatRes_FTAN(N, Lo, Hi);
-    break;
   case ISD::STRICT_FTRUNC:
   case ISD::FTRUNC:     ExpandFloatRes_FTRUNC(N, Lo, Hi); break;
   case ISD::LOAD:       ExpandFloatRes_LOAD(N, Lo, Hi); break;
@@ -1780,15 +1768,6 @@ void DAGTypeLegalizer::ExpandFloatRes_FSUB(SDNode *N, SDValue &Lo,
                                         RTLIB::SUB_PPCF128), Lo, Hi);
 }
 
-void DAGTypeLegalizer::ExpandFloatRes_FTAN(SDNode *N, SDValue &Lo,
-                                           SDValue &Hi) {
-  ExpandFloatRes_Unary(N,
-                       GetFPLibCall(N->getValueType(0), RTLIB::TAN_F32,
-                                    RTLIB::TAN_F64, RTLIB::TAN_F80,
-                                    RTLIB::TAN_F128, RTLIB::TAN_PPCF128),
-                       Lo, Hi);
-}
-
 void DAGTypeLegalizer::ExpandFloatRes_FTRUNC(SDNode *N,
                                              SDValue &Lo, SDValue &Hi) {
   ExpandFloatRes_Unary(N, GetFPLibCall(N->getValueType(0),
@@ -2482,7 +2461,6 @@ void DAGTypeLegalizer::PromoteFloatResult(SDNode *N, unsigned ResNo) {
     case ISD::FSIN:
     case ISD::FSQRT:
     case ISD::FTRUNC:
-    case ISD::FTAN:
     case ISD::FCANONICALIZE: R = PromoteFloatRes_UnaryOp(N); break;
 
     // Binary FP Operations
@@ -2914,7 +2892,6 @@ void DAGTypeLegalizer::SoftPromoteHalfResult(SDNode *N, unsigned ResNo) {
   case ISD::FSIN:
   case ISD::FSQRT:
   case ISD::FTRUNC:
-  case ISD::FTAN:
   case ISD::FCANONICALIZE: R = SoftPromoteHalfRes_UnaryOp(N); break;
 
   // Binary FP Operations
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h b/llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
@@ -567,7 +567,6 @@ class LLVM_LIBRARY_VISIBILITY DAGTypeLegalizer {
   SDValue SoftenFloatRes_FSIN(SDNode *N);
   SDValue SoftenFloatRes_FSQRT(SDNode *N);
   SDValue SoftenFloatRes_FSUB(SDNode *N);
-  SDValue SoftenFloatRes_FTAN(SDNode *N);
   SDValue SoftenFloatRes_FTRUNC(SDNode *N);
   SDValue SoftenFloatRes_LOAD(SDNode *N);
   SDValue SoftenFloatRes_ATOMIC_LOAD(SDNode *N);
@@ -649,7 +648,6 @@ class LLVM_LIBRARY_VISIBILITY DAGTypeLegalizer {
   void ExpandFloatRes_FSIN      (SDNode *N, SDValue &Lo, SDValue &Hi);
   void ExpandFloatRes_FSQRT     (SDNode *N, SDValue &Lo, SDValue &Hi);
   void ExpandFloatRes_FSUB      (SDNode *N, SDValue &Lo, SDValue &Hi);
-  void ExpandFloatRes_FTAN(SDNode *N, SDValue &Lo, SDValue &Hi);
   void ExpandFloatRes_FTRUNC    (SDNode *N, SDValue &Lo, SDValue &Hi);
   void ExpandFloatRes_LOAD      (SDNode *N, SDValue &Lo, SDValue &Hi);
   void ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo, SDValue &Hi);
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp
@@ -395,7 +395,6 @@ SDValue VectorLegalizer::LegalizeOp(SDValue Op) {
   case ISD::FSQRT:
   case ISD::FSIN:
   case ISD::FCOS:
-  case ISD::FTAN:
   case ISD::FLDEXP:
   case ISD::FPOWI:
   case ISD::FPOW:
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
@@ -107,7 +107,6 @@ void DAGTypeLegalizer::ScalarizeVectorResult(SDNode *N, unsigned ResNo) {
   case ISD::FROUNDEVEN:
   case ISD::FSIN:
   case ISD::FSQRT:
-  case ISD::FTAN:
   case ISD::FTRUNC:
   case ISD::SIGN_EXTEND:
   case ISD::SINT_TO_FP:
@@ -1112,7 +1111,6 @@ void DAGTypeLegalizer::SplitVectorResult(SDNode *N, unsigned ResNo) {
   case ISD::VP_FROUNDEVEN:
   case ISD::FSIN:
   case ISD::FSQRT: case ISD::VP_SQRT:
-  case ISD::FTAN:
   case ISD::FTRUNC:
   case ISD::VP_FROUNDTOZERO:
   case ISD::SINT_TO_FP:
@@ -4337,7 +4335,6 @@ void DAGTypeLegalizer::WidenVectorResult(SDNode *N, unsigned ResNo) {
   case ISD::FROUNDEVEN:
   case ISD::FSIN:
   case ISD::FSQRT:
-  case ISD::FTAN:
   case ISD::FTRUNC:
     if (unrollExpandedOp())
       break;
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -5276,7 +5276,6 @@ bool SelectionDAG::isKnownNeverNaN(SDValue Op, bool SNaN, unsigned Depth) const
   case ISD::FREM:
   case ISD::FSIN:
   case ISD::FCOS:
-  case ISD::FTAN:
   case ISD::FMA:
   case ISD::FMAD: {
     if (SNaN)
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -6690,7 +6690,6 @@ void SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I,
   case Intrinsic::fabs:
   case Intrinsic::sin:
   case Intrinsic::cos:
-  case Intrinsic::tan:
   case Intrinsic::exp10:
   case Intrinsic::floor:
   case Intrinsic::ceil:
@@ -6707,9 +6706,6 @@ void SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I,
     case Intrinsic::fabs:      Opcode = ISD::FABS;       break;
     case Intrinsic::sin:       Opcode = ISD::FSIN;       break;
     case Intrinsic::cos:       Opcode = ISD::FCOS;       break;
-    case Intrinsic::tan:
-      Opcode = ISD::FTAN;
-      break;
     case Intrinsic::exp10:     Opcode = ISD::FEXP10;     break;
     case Intrinsic::floor:     Opcode = ISD::FFLOOR;     break;
     case Intrinsic::ceil:      Opcode = ISD::FCEIL;      break;
@@ -9092,12 +9088,6 @@ void SelectionDAGBuilder::visitCall(const CallInst &I) {
         if (visitUnaryFloatCall(I, ISD::FCOS))
           return;
         break;
-      case LibFunc_tan:
-      case LibFunc_tanf:
-      case LibFunc_tanl:
-        if (visitUnaryFloatCall(I, ISD::FTAN))
-          return;
-        break;
       case LibFunc_sqrt:
       case LibFunc_sqrtf:
       case LibFunc_sqrtl:
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
@@ -210,8 +210,6 @@ std::string SDNode::getOperationName(const SelectionDAG *G) const {
   case ISD::FCOS:                       return "fcos";
   case ISD::STRICT_FCOS:                return "strict_fcos";
   case ISD::FSINCOS:                    return "fsincos";
-  case ISD::FTAN:                       return "ftan";
-  case ISD::STRICT_FTAN:                return "strict_ftan";
   case ISD::FTRUNC:                     return "ftrunc";
   case ISD::STRICT_FTRUNC:              return "strict_ftrunc";
   case ISD::FFLOOR:                     return "ffloor";
diff --git a/llvm/lib/CodeGen/TargetLoweringBase.cpp b/llvm/lib/CodeGen/TargetLoweringBase.cpp
@@ -141,7 +141,6 @@ void TargetLoweringBase::InitLibcalls(const Triple &TT) {
     setLibcallName(RTLIB::EXP10_F128, "exp10f128");
     setLibcallName(RTLIB::SIN_F128, "sinf128");
     setLibcallName(RTLIB::COS_F128, "cosf128");
-    setLibcallName(RTLIB::TAN_F128, "tanf128");
     setLibcallName(RTLIB::SINCOS_F128, "sincosf128");
     setLibcallName(RTLIB::POW_F128, "powf128");
     setLibcallName(RTLIB::POW_FINITE_F128, "__powf128_finite");
@@ -988,8 +987,7 @@ void TargetLoweringBase::initActions() {
   setOperationAction({ISD::FCBRT, ISD::FLOG, ISD::FLOG2, ISD::FLOG10, ISD::FEXP,
                       ISD::FEXP2, ISD::FEXP10, ISD::FFLOOR, ISD::FNEARBYINT,
                       ISD::FCEIL, ISD::FRINT, ISD::FTRUNC, ISD::LROUND,
-                      ISD::LLROUND, ISD::LRINT, ISD::LLRINT, ISD::FROUNDEVEN,
-                      ISD::FTAN},
+                      ISD::LLROUND, ISD::LRINT, ISD::LLRINT, ISD::FROUNDEVEN},
                      {MVT::f32, MVT::f64, MVT::f128}, Expand);
 
   // Default ISD::TRAP to expand (which turns it into abort).
diff --git a/llvm/lib/Target/DirectX/DXIL.td b/llvm/lib/Target/DirectX/DXIL.td
@@ -266,9 +266,6 @@ def Cos  : DXILOpMapping<12, unary, int_cos,
 def Sin  : DXILOpMapping<13, unary, int_sin,
                          "Returns sine(theta) for theta in radians.",
                          [llvm_halforfloat_ty, LLVMMatchType<0>]>;
-def Tan  : DXILOpMapping<14, unary, int_tan,
-                         "Returns tangent(theta) for theta in radians.",
-                         [llvm_halforfloat_ty, LLVMMatchType<0>]>;
 def Exp2 : DXILOpMapping<21, unary, int_exp2,
                          "Returns the base 2 exponential, or 2**x, of the specified value."
                          "exp2(x) = 2**x.",
diff --git a/llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp b/llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp
diff --git a/llvm/lib/Target/SPIRV/SPIRVLegalizerInfo.cpp b/llvm/lib/Target/SPIRV/SPIRVLegalizerInfo.cpp
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
diff --git a/llvm/test/CodeGen/AArch64/GlobalISel/legalizer-info-validation.mir b/llvm/test/CodeGen/AArch64/GlobalISel/legalizer-info-validation.mir
diff --git a/llvm/test/CodeGen/DirectX/tan.ll b/llvm/test/CodeGen/DirectX/tan.ll
diff --git a/llvm/test/CodeGen/DirectX/tan_error.ll b/llvm/test/CodeGen/DirectX/tan_error.ll
diff --git a/llvm/test/CodeGen/SPIRV/hlsl-intrinsics/tan.ll b/llvm/test/CodeGen/SPIRV/hlsl-intrinsics/tan.ll
diff --git a/llvm/test/CodeGen/X86/llvm.tan.ll b/llvm/test/CodeGen/X86/llvm.tan.ll
diff --git a/llvm/test/CodeGen/X86/vec-libcalls.ll b/llvm/test/CodeGen/X86/vec-libcalls.ll
