DAG: Avoid using getLibcallName for function support test

llvm/include/llvm/CodeGen/RuntimeLibcallUtil.h

@@ -22,6 +22,46 @@
 namespace llvm {
 namespace RTLIB {
 
+/// \return The SHL_* value for the given types, or UNKNOWN_LIBCALL if there is
+/// none.
+LLVM_ABI Libcall getSHL(EVT VT);
+
+/// \return The SRL_* value for the given types, or UNKNOWN_LIBCALL if there is
+/// none.
+LLVM_ABI Libcall getSRL(EVT VT);
+
+/// \return The SRA_* value for the given types, or UNKNOWN_LIBCALL if there is
+/// none.
+LLVM_ABI Libcall getSRA(EVT VT);
+
+/// \return The MUL_* value for the given types, or UNKNOWN_LIBCALL if there is
+/// none.
+LLVM_ABI Libcall getMUL(EVT VT);
+
+/// \return The MULO_* value for the given types, or UNKNOWN_LIBCALL if there is
+/// none.
+LLVM_ABI Libcall getMULO(EVT VT);
+
+/// \return The SDIV_* value for the given types, or UNKNOWN_LIBCALL if there is
+/// none.
+LLVM_ABI Libcall getSDIV(EVT VT);
+
+/// \return The UDIV_* value for the given types, or UNKNOWN_LIBCALL if there is
+/// none.
+LLVM_ABI Libcall getUDIV(EVT VT);
+
+/// \return The SREM_* value for the given types, or UNKNOWN_LIBCALL if there is
+/// none.
+LLVM_ABI Libcall getSREM(EVT VT);
+
+/// \return The UREM_* value for the given types, or UNKNOWN_LIBCALL if there is
+/// none.
+LLVM_ABI Libcall getUREM(EVT VT);
+
+/// \return The CTPOP_* value for the given types, or UNKNOWN_LIBCALL if there
+/// is none.
+LLVM_ABI Libcall getCTPOP(EVT VT);
+
 /// GetFPLibCall - Helper to return the right libcall for the given floating
 /// point type, or UNKNOWN_LIBCALL if there is none.
 LLVM_ABI Libcall getFPLibCall(EVT VT, Libcall Call_F32, Libcall Call_F64,
@@ -90,7 +130,23 @@ LLVM_ABI Libcall getSINCOS_STRET(EVT RetVT);
 
 /// getMODF - Return the MODF_* value for the given types, or
 /// UNKNOWN_LIBCALL if there is none.
-LLVM_ABI Libcall getMODF(EVT RetVT);
+LLVM_ABI Libcall getMODF(EVT VT);
+
+/// \return the LROUND_* value for the given types, or UNKNOWN_LIBCALL if there
+/// is none.
+LLVM_ABI Libcall getLROUND(EVT VT);
+
+/// \return the LLROUND_* value for the given types, or UNKNOWN_LIBCALL if there
+/// is none.
+LLVM_ABI Libcall getLLROUND(EVT VT);
+
+/// \return the LRINT_* value for the given types, or UNKNOWN_LIBCALL if there
+/// is none.
+LLVM_ABI Libcall getLRINT(EVT RetVT);
+
+/// \return the LLRINT_* value for the given types, or UNKNOWN_LIBCALL if there
+/// is none.
+LLVM_ABI Libcall getLLRINT(EVT RetVT);
 
 /// Return the SYNC_FETCH_AND_* value for the given opcode and type, or
 /// UNKNOWN_LIBCALL if there is none.

llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp

@@ -3878,7 +3878,7 @@ bool SelectionDAGLegalize::ExpandNode(SDNode *Node) {
     RTLIB::Libcall LC = RTLIB::getLDEXP(VT);
     // Use the LibCall instead, it is very likely faster
     // FIXME: Use separate LibCall action.
-    if (TLI.getLibcallName(LC))
+    if (TLI.getLibcallImpl(LC) != RTLIB::Unsupported)
       break;
 
     if (SDValue Expanded = expandLdexp(Node)) {
@@ -3893,7 +3893,7 @@ bool SelectionDAGLegalize::ExpandNode(SDNode *Node) {
     RTLIB::Libcall LC = RTLIB::getFREXP(Node->getValueType(0));
     // Use the LibCall instead, it is very likely faster
     // FIXME: Use separate LibCall action.
-    if (TLI.getLibcallName(LC))
+    if (TLI.getLibcallImpl(LC) != RTLIB::Unsupported)
       break;
 
     if (SDValue Expanded = expandFrexp(Node)) {
@@ -4695,7 +4695,7 @@ void SelectionDAGLegalize::ConvertNodeToLibcall(SDNode *Node) {
     RTLIB::Libcall LC = RTLIB::getOUTLINE_ATOMIC(Opc, Order, VT);
     EVT RetVT = Node->getValueType(0);
     SmallVector<SDValue, 4> Ops;
-    if (TLI.getLibcallName(LC)) {
+    if (TLI.getLibcallImpl(LC) != RTLIB::Unsupported) {
       // If outline atomic available, prepare its arguments and expand.
       Ops.append(Node->op_begin() + 2, Node->op_end());
       Ops.push_back(Node->getOperand(1));
@@ -4961,7 +4961,7 @@ void SelectionDAGLegalize::ConvertNodeToLibcall(SDNode *Node) {
   case ISD::STRICT_FPOWI: {
     RTLIB::Libcall LC = RTLIB::getPOWI(Node->getSimpleValueType(0));
     assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unexpected fpowi.");
-    if (!TLI.getLibcallName(LC)) {
+    if (TLI.getLibcallImpl(LC) == RTLIB::Unsupported) {
       // Some targets don't have a powi libcall; use pow instead.
       if (Node->isStrictFPOpcode()) {
         SDValue Exponent =

llvm/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp

@@ -717,7 +717,7 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_ExpOp(SDNode *N) {
   RTLIB::Libcall LC = IsPowI ? RTLIB::getPOWI(N->getValueType(0))
                              : RTLIB::getLDEXP(N->getValueType(0));
   assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unexpected fpowi.");
-  if (!TLI.getLibcallName(LC)) {
+  if (TLI.getLibcallImpl(LC) == RTLIB::Unsupported) {
     // Some targets don't have a powi libcall; use pow instead.
     // FIXME: Implement this if some target needs it.
     DAG.getContext()->emitError("do not know how to soften fpowi to fpow");
@@ -802,7 +802,7 @@ bool DAGTypeLegalizer::SoftenFloatRes_UnaryWithTwoFPResults(
   assert(VT == N->getValueType(1) &&
          "expected both return values to have the same type");
 
-  if (!TLI.getLibcallName(LC))
+  if (TLI.getLibcallImpl(LC) == RTLIB::Unsupported)
     return false;
 
   EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
@@ -862,7 +862,8 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FSINCOS(SDNode *N) {
   RTLIB::Libcall CosLC = RTLIB::getCOS(VT);
 
   SDValue SoftSin, SoftCos;
-  if (!TLI.getLibcallName(SinLC) || !TLI.getLibcallName(CosLC)) {
+  if (TLI.getLibcallImpl(SinLC) == RTLIB::Unsupported ||
+      TLI.getLibcallImpl(CosLC) == RTLIB::Unsupported) {
     DAG.getContext()->emitError("do not know how to soften fsincos");
 
     EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);

llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp

@@ -2692,7 +2692,7 @@ SDValue DAGTypeLegalizer::PromoteIntOp_ExpOp(SDNode *N) {
   RTLIB::Libcall LC = IsPowI ? RTLIB::getPOWI(N->getValueType(0))
                              : RTLIB::getLDEXP(N->getValueType(0));
 
-  if (LC == RTLIB::UNKNOWN_LIBCALL || !TLI.getLibcallName(LC)) {
+  if (TLI.getLibcallImpl(LC) == RTLIB::Unsupported) {
     // Scalarize vector FPOWI instead of promoting the type. This allows the
     // scalar FPOWIs to be visited and converted to libcalls before promoting
     // the type.
@@ -4097,13 +4097,7 @@ void DAGTypeLegalizer::ExpandIntRes_CTPOP(SDNode *N, SDValue &Lo, SDValue &Hi) {
   SDLoc DL(N);
 
   if (TLI.getOperationAction(ISD::CTPOP, VT) == TargetLoweringBase::LibCall) {
-    RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
-    if (VT == MVT::i32)
-      LC = RTLIB::CTPOP_I32;
-    else if (VT == MVT::i64)
-      LC = RTLIB::CTPOP_I64;
-    else if (VT == MVT::i128)
-      LC = RTLIB::CTPOP_I128;
+    RTLIB::Libcall LC = RTLIB::getCTPOP(VT);
     assert(LC != RTLIB::UNKNOWN_LIBCALL && TLI.getLibcallName(LC) &&
            "LibCall explicitly requested, but not available");
     TargetLowering::MakeLibCallOptions CallOptions;
@@ -4236,55 +4230,19 @@ void DAGTypeLegalizer::ExpandIntRes_XROUND_XRINT(SDNode *N, SDValue &Lo,
   RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
   if (N->getOpcode() == ISD::LROUND ||
       N->getOpcode() == ISD::STRICT_LROUND) {
-    if (VT == MVT::f32)
-      LC = RTLIB::LROUND_F32;
-    else if (VT == MVT::f64)
-      LC = RTLIB::LROUND_F64;
-    else if (VT == MVT::f80)
-      LC = RTLIB::LROUND_F80;
-    else if (VT == MVT::f128)
-      LC = RTLIB::LROUND_F128;
-    else if (VT == MVT::ppcf128)
-      LC = RTLIB::LROUND_PPCF128;
+    LC = RTLIB::getLROUND(VT);
     assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unexpected lround input type!");
   } else if (N->getOpcode() == ISD::LRINT ||
              N->getOpcode() == ISD::STRICT_LRINT) {
-    if (VT == MVT::f32)
-      LC = RTLIB::LRINT_F32;
-    else if (VT == MVT::f64)
-      LC = RTLIB::LRINT_F64;
-    else if (VT == MVT::f80)
-      LC = RTLIB::LRINT_F80;
-    else if (VT == MVT::f128)
-      LC = RTLIB::LRINT_F128;
-    else if (VT == MVT::ppcf128)
-      LC = RTLIB::LRINT_PPCF128;
+    LC = RTLIB::getLRINT(VT);
     assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unexpected lrint input type!");
   } else if (N->getOpcode() == ISD::LLROUND ||
       N->getOpcode() == ISD::STRICT_LLROUND) {
-    if (VT == MVT::f32)
-      LC = RTLIB::LLROUND_F32;
-    else if (VT == MVT::f64)
-      LC = RTLIB::LLROUND_F64;
-    else if (VT == MVT::f80)
-      LC = RTLIB::LLROUND_F80;
-    else if (VT == MVT::f128)
-      LC = RTLIB::LLROUND_F128;
-    else if (VT == MVT::ppcf128)
-      LC = RTLIB::LLROUND_PPCF128;
+    LC = RTLIB::getLLROUND(VT);
     assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unexpected llround input type!");
   } else if (N->getOpcode() == ISD::LLRINT ||
              N->getOpcode() == ISD::STRICT_LLRINT) {
-    if (VT == MVT::f32)
-      LC = RTLIB::LLRINT_F32;
-    else if (VT == MVT::f64)
-      LC = RTLIB::LLRINT_F64;
-    else if (VT == MVT::f80)
-      LC = RTLIB::LLRINT_F80;
-    else if (VT == MVT::f128)
-      LC = RTLIB::LLRINT_F128;
-    else if (VT == MVT::ppcf128)
-      LC = RTLIB::LLRINT_PPCF128;
+    LC = RTLIB::getLLRINT(VT);
     assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unexpected llrint input type!");
   } else
     llvm_unreachable("Unexpected opcode!");
@@ -4444,15 +4402,7 @@ void DAGTypeLegalizer::ExpandIntRes_MUL(SDNode *N,
     return;
 
   // If nothing else, we can make a libcall.
-  RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
-  if (VT == MVT::i16)
-    LC = RTLIB::MUL_I16;
-  else if (VT == MVT::i32)
-    LC = RTLIB::MUL_I32;
-  else if (VT == MVT::i64)
-    LC = RTLIB::MUL_I64;
-  else if (VT == MVT::i128)
-    LC = RTLIB::MUL_I128;
+  RTLIB::Libcall LC = RTLIB::getMUL(VT);
 
   if (LC == RTLIB::UNKNOWN_LIBCALL || !TLI.getLibcallName(LC)) {
     // Perform a wide multiplication where the wide type is the original VT and
@@ -4824,15 +4774,7 @@ void DAGTypeLegalizer::ExpandIntRes_SDIV(SDNode *N,
     return;
   }
 
-  RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
-  if (VT == MVT::i16)
-    LC = RTLIB::SDIV_I16;
-  else if (VT == MVT::i32)
-    LC = RTLIB::SDIV_I32;
-  else if (VT == MVT::i64)
-    LC = RTLIB::SDIV_I64;
-  else if (VT == MVT::i128)
-    LC = RTLIB::SDIV_I128;
+  RTLIB::Libcall LC = RTLIB::getSDIV(VT);
   assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported SDIV!");
 
   TargetLowering::MakeLibCallOptions CallOptions;
@@ -5039,35 +4981,14 @@ void DAGTypeLegalizer::ExpandIntRes_Shift(SDNode *N,
   bool isSigned;
   if (Opc == ISD::SHL) {
     isSigned = false; /*sign irrelevant*/
-    if (VT == MVT::i16)
-      LC = RTLIB::SHL_I16;
-    else if (VT == MVT::i32)
-      LC = RTLIB::SHL_I32;
-    else if (VT == MVT::i64)
-      LC = RTLIB::SHL_I64;
-    else if (VT == MVT::i128)
-      LC = RTLIB::SHL_I128;
+    LC = RTLIB::getSHL(VT);
   } else if (Opc == ISD::SRL) {
     isSigned = false;
-    if (VT == MVT::i16)
-      LC = RTLIB::SRL_I16;
-    else if (VT == MVT::i32)
-      LC = RTLIB::SRL_I32;
-    else if (VT == MVT::i64)
-      LC = RTLIB::SRL_I64;
-    else if (VT == MVT::i128)
-      LC = RTLIB::SRL_I128;
+    LC = RTLIB::getSRL(VT);
   } else {
     assert(Opc == ISD::SRA && "Unknown shift!");
     isSigned = true;
-    if (VT == MVT::i16)
-      LC = RTLIB::SRA_I16;
-    else if (VT == MVT::i32)
-      LC = RTLIB::SRA_I32;
-    else if (VT == MVT::i64)
-      LC = RTLIB::SRA_I64;
-    else if (VT == MVT::i128)
-      LC = RTLIB::SRA_I128;
+    LC = RTLIB::getSRA(VT);
   }
 
   if (LC != RTLIB::UNKNOWN_LIBCALL && TLI.getLibcallName(LC)) {
@@ -5153,15 +5074,7 @@ void DAGTypeLegalizer::ExpandIntRes_SREM(SDNode *N,
     return;
   }
 
-  RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
-  if (VT == MVT::i16)
-    LC = RTLIB::SREM_I16;
-  else if (VT == MVT::i32)
-    LC = RTLIB::SREM_I32;
-  else if (VT == MVT::i64)
-    LC = RTLIB::SREM_I64;
-  else if (VT == MVT::i128)
-    LC = RTLIB::SREM_I128;
+  RTLIB::Libcall LC = RTLIB::getSREM(VT);
   assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported SREM!");
 
   TargetLowering::MakeLibCallOptions CallOptions;
@@ -5244,13 +5157,7 @@ void DAGTypeLegalizer::ExpandIntRes_XMULO(SDNode *N,
   Type *PtrTy = PtrVT.getTypeForEVT(*DAG.getContext());
 
   // Replace this with a libcall that will check overflow.
-  RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
-  if (VT == MVT::i32)
-    LC = RTLIB::MULO_I32;
-  else if (VT == MVT::i64)
-    LC = RTLIB::MULO_I64;
-  else if (VT == MVT::i128)
-    LC = RTLIB::MULO_I128;
+  RTLIB::Libcall LC = RTLIB::getMULO(VT);
 
   // If we don't have the libcall or if the function we are compiling is the
   // implementation of the expected libcall (avoid inf-loop), expand inline.
@@ -5341,15 +5248,7 @@ void DAGTypeLegalizer::ExpandIntRes_UDIV(SDNode *N,
     }
   }
 
-  RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
-  if (VT == MVT::i16)
-    LC = RTLIB::UDIV_I16;
-  else if (VT == MVT::i32)
-    LC = RTLIB::UDIV_I32;
-  else if (VT == MVT::i64)
-    LC = RTLIB::UDIV_I64;
-  else if (VT == MVT::i128)
-    LC = RTLIB::UDIV_I128;
+  RTLIB::Libcall LC = RTLIB::getUDIV(VT);
   assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported UDIV!");
 
   TargetLowering::MakeLibCallOptions CallOptions;
@@ -5384,15 +5283,7 @@ void DAGTypeLegalizer::ExpandIntRes_UREM(SDNode *N,
     }
   }
 
-  RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
-  if (VT == MVT::i16)
-    LC = RTLIB::UREM_I16;
-  else if (VT == MVT::i32)
-    LC = RTLIB::UREM_I32;
-  else if (VT == MVT::i64)
-    LC = RTLIB::UREM_I64;
-  else if (VT == MVT::i128)
-    LC = RTLIB::UREM_I128;
+  RTLIB::Libcall LC = RTLIB::getUREM(VT);
   assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported UREM!");
 
   TargetLowering::MakeLibCallOptions CallOptions;