[flang-commits] [flang] 1753de2 - [flang][FIR] remove fir.complex type and its fir.real element type (#111025)

via flang-commits flang-commits at lists.llvm.org
Fri Oct 4 00:57:06 PDT 2024


Author: jeanPerier
Date: 2024-10-04T09:57:03+02:00
New Revision: 1753de2d9564682cd9034aae50e81691bfd168ec

URL: https://github.com/llvm/llvm-project/commit/1753de2d9564682cd9034aae50e81691bfd168ec
DIFF: https://github.com/llvm/llvm-project/commit/1753de2d9564682cd9034aae50e81691bfd168ec.diff

LOG: [flang][FIR] remove fir.complex type and its fir.real element type (#111025)

Final patch of
https://discourse.llvm.org/t/rfc-flang-replace-usages-of-fir-complex-by-mlir-complex-type/82292

Since fir.real was only still used as fir.complex element type, this
patch removes it at the same time.

Added: 
    

Modified: 
    flang/include/flang/Optimizer/CodeGen/TypeConverter.h
    flang/include/flang/Optimizer/Dialect/FIROps.td
    flang/include/flang/Optimizer/Dialect/FIRType.h
    flang/include/flang/Optimizer/Dialect/FIRTypes.td
    flang/include/flang/Optimizer/HLFIR/HLFIROpBase.td
    flang/lib/Lower/ConvertExpr.cpp
    flang/lib/Optimizer/Builder/FIRBuilder.cpp
    flang/lib/Optimizer/CodeGen/CodeGen.cpp
    flang/lib/Optimizer/CodeGen/Target.cpp
    flang/lib/Optimizer/CodeGen/TargetRewrite.cpp
    flang/lib/Optimizer/CodeGen/TypeConverter.cpp
    flang/lib/Optimizer/Dialect/FIROps.cpp
    flang/lib/Optimizer/Dialect/FIRType.cpp
    flang/lib/Optimizer/HLFIR/IR/HLFIROps.cpp
    flang/lib/Optimizer/Transforms/DebugTypeGenerator.cpp
    flang/test/Fir/constant.fir
    flang/test/Fir/fir-types.fir
    flang/test/Fir/invalid-types.fir
    flang/test/Fir/target.fir
    flang/test/Fir/types-to-llvm.fir

Removed: 
    flang/test/Transforms/debug-90683.fir


################################################################################
diff  --git a/flang/include/flang/Optimizer/CodeGen/TypeConverter.h b/flang/include/flang/Optimizer/CodeGen/TypeConverter.h
index 7215abf3a8f817..7c317ddeea1fa4 100644
--- a/flang/include/flang/Optimizer/CodeGen/TypeConverter.h
+++ b/flang/include/flang/Optimizer/CodeGen/TypeConverter.h
@@ -89,25 +89,10 @@ class LLVMTypeConverter : public mlir::LLVMTypeConverter {
   // fir.char<k,n>  -->  llvm.array<n x "ix">
   mlir::Type convertCharType(fir::CharacterType charTy) const;
 
-  // Use the target specifics to figure out how to map complex to LLVM IR. The
-  // use of complex values in function signatures is handled before conversion
-  // to LLVM IR dialect here.
-  //
-  // fir.complex<T> | std.complex<T>    --> llvm<"{t,t}">
-  template <typename C>
-  mlir::Type convertComplexType(C cmplx) const {
-    auto eleTy = cmplx.getElementType();
-    return convertType(specifics->complexMemoryType(eleTy));
-  }
-
   template <typename A> mlir::Type convertPointerLike(A &ty) const {
     return mlir::LLVM::LLVMPointerType::get(ty.getContext());
   }
 
-  // convert a front-end kind value to either a std or LLVM IR dialect type
-  // fir.real<n>  -->  llvm.anyfloat  where anyfloat is a kind mapping
-  mlir::Type convertRealType(fir::KindTy kind) const;
-
   // fir.array<c ... :any>  -->  llvm<"[...[c x any]]">
   mlir::Type convertSequenceType(SequenceType seq) const;
 

diff  --git a/flang/include/flang/Optimizer/Dialect/FIROps.td b/flang/include/flang/Optimizer/Dialect/FIROps.td
index 653b043dbbbda7..d467f0ab4e1c1e 100644
--- a/flang/include/flang/Optimizer/Dialect/FIROps.td
+++ b/flang/include/flang/Optimizer/Dialect/FIROps.td
@@ -2735,8 +2735,8 @@ def fir_ConvertOp : fir_SimpleOneResultOp<"convert", [NoMemoryEffect]> {
 }
 
 def FortranTypeAttr : Attr<And<[CPred<"mlir::isa<mlir::TypeAttr>($_self)">,
-    Or<[CPred<"mlir::isa<fir::CharacterType, fir::ComplexType, "
-              "fir::IntegerType, fir::LogicalType, fir::RealType, "
+    Or<[CPred<"mlir::isa<fir::CharacterType, fir::IntegerType,"
+              "fir::LogicalType, mlir::FloatType, mlir::ComplexType,"
               "fir::RecordType>(mlir::cast<mlir::TypeAttr>($_self).getValue())"
     >]>]>, "Fortran surface type"> {
   let storageType = [{ ::mlir::TypeAttr }];

diff  --git a/flang/include/flang/Optimizer/Dialect/FIRType.h b/flang/include/flang/Optimizer/Dialect/FIRType.h
index 71ef6ab33b82a3..ac638d98980d1e 100644
--- a/flang/include/flang/Optimizer/Dialect/FIRType.h
+++ b/flang/include/flang/Optimizer/Dialect/FIRType.h
@@ -159,10 +159,8 @@ mlir::Type dyn_cast_ptrEleTy(mlir::Type t);
 /// `t` is not a memory reference or box type, then returns a null `Type`.
 mlir::Type dyn_cast_ptrOrBoxEleTy(mlir::Type t);
 
-/// Is `t` a FIR Real or MLIR Float type?
-inline bool isa_real(mlir::Type t) {
-  return mlir::isa<fir::RealType, mlir::FloatType>(t);
-}
+/// Is `t` a real type?
+inline bool isa_real(mlir::Type t) { return mlir::isa<mlir::FloatType>(t); }
 
 /// Is `t` an integral type?
 inline bool isa_integer(mlir::Type t) {

diff  --git a/flang/include/flang/Optimizer/Dialect/FIRTypes.td b/flang/include/flang/Optimizer/Dialect/FIRTypes.td
index 0e1fca12fde651..7ac8e0822ecc88 100644
--- a/flang/include/flang/Optimizer/Dialect/FIRTypes.td
+++ b/flang/include/flang/Optimizer/Dialect/FIRTypes.td
@@ -158,26 +158,6 @@ def fir_ClassType : FIR_Type<"Class", "class", [], "BaseBoxType"> {
   let assemblyFormat = "`<` $eleTy `>`";
 }
 
-def fir_ComplexType : FIR_Type<"Complex", "complex"> {
-  let summary = "Complex type";
-
-  let description = [{
-    Model of a Fortran COMPLEX intrinsic type, including the KIND type
-    parameter. COMPLEX is a floating point type with a real and imaginary
-    member.
-  }];
-
-  let parameters = (ins "KindTy":$fKind);
-  let hasCustomAssemblyFormat = 1;
-
-  let extraClassDeclaration = [{
-    using KindTy = unsigned;
-
-    mlir::Type getElementType() const;
-    mlir::Type getEleType(const fir::KindMapping &kindMap) const;
-  }];
-}
-
 def fir_FieldType : FIR_Type<"Field", "field"> {
   let summary = "A field (in a RecordType) argument's type";
 
@@ -313,26 +293,6 @@ def fir_PointerType : FIR_Type<"Pointer", "ptr"> {
   }];
 }
 
-def fir_RealType : FIR_Type<"Real", "real"> {
-  let summary = "FIR real type";
-
-  let description = [{
-    Model of a Fortran REAL (and DOUBLE PRECISION) intrinsic type, including the
-    KIND type parameter.
-  }];
-
-  let parameters = (ins "KindTy":$fKind);
-  let hasCustomAssemblyFormat = 1;
-
-  let extraClassDeclaration = [{
-    using KindTy = unsigned;
-    // Get MLIR float type with same semantics.
-    mlir::Type getFloatType(const fir::KindMapping &kindMap) const;
-  }];
-
-  let genVerifyDecl = 1;
-}
-
 def fir_RecordType : FIR_Type<"Record", "type"> {
   let summary = "FIR derived type";
 
@@ -597,8 +557,7 @@ def AnyIntegerLike : TypeConstraint<Or<[SignlessIntegerLike.predicate,
     AnySignedInteger.predicate, fir_IntegerType.predicate]>, "any integer">;
 def AnyLogicalLike : TypeConstraint<Or<[BoolLike.predicate,
     fir_LogicalType.predicate]>, "any logical">;
-def AnyRealLike : TypeConstraint<Or<[FloatLike.predicate,
-    fir_RealType.predicate]>, "any real">;
+def AnyRealLike : TypeConstraint<FloatLike.predicate, "any real">;
 def AnyIntegerType : Type<AnyIntegerLike.predicate, "any integer">;
 
 def AnyFirComplexLike :  TypeConstraint<CPred<"::fir::isa_complex($_self)">,

diff  --git a/flang/include/flang/Optimizer/HLFIR/HLFIROpBase.td b/flang/include/flang/Optimizer/HLFIR/HLFIROpBase.td
index 492e3337137cfa..d967a407a75880 100644
--- a/flang/include/flang/Optimizer/HLFIR/HLFIROpBase.td
+++ b/flang/include/flang/Optimizer/HLFIR/HLFIROpBase.td
@@ -93,7 +93,7 @@ def AnyFortranVariable : Type<IsFortranVariablePred, "any HLFIR variable type">;
 
 def AnyFortranValue : TypeConstraint<Or<[AnyLogicalLike.predicate,
     AnyIntegerLike.predicate, AnyRealLike.predicate,
-    fir_ComplexType.predicate, AnyComplex.predicate,
+    AnyFirComplexLike.predicate,
     hlfir_ExprType.predicate]>, "any Fortran value type">;
 
 

diff  --git a/flang/lib/Lower/ConvertExpr.cpp b/flang/lib/Lower/ConvertExpr.cpp
index 72c236be42ce3d..87e2114e413059 100644
--- a/flang/lib/Lower/ConvertExpr.cpp
+++ b/flang/lib/Lower/ConvertExpr.cpp
@@ -5710,10 +5710,6 @@ class ArrayExprLowering {
             fir::applyPathToType(seqTy.getEleTy(), components.suffixComponents);
         if (!eleTy)
           fir::emitFatalError(loc, "slicing path is ill-formed");
-        if (auto realTy = mlir::dyn_cast<fir::RealType>(eleTy))
-          eleTy = Fortran::lower::convertReal(realTy.getContext(),
-                                              realTy.getFKind());
-
         // create the type of the projected array.
         arrTy = fir::SequenceType::get(seqTy.getShape(), eleTy);
         LLVM_DEBUG(llvm::dbgs()

diff  --git a/flang/lib/Optimizer/Builder/FIRBuilder.cpp b/flang/lib/Optimizer/Builder/FIRBuilder.cpp
index d983ddb33faf30..9ad37c8df434a2 100644
--- a/flang/lib/Optimizer/Builder/FIRBuilder.cpp
+++ b/flang/lib/Optimizer/Builder/FIRBuilder.cpp
@@ -150,8 +150,6 @@ mlir::Value
 fir::FirOpBuilder::createRealConstant(mlir::Location loc, mlir::Type fltTy,
                                       llvm::APFloat::integerPart val) {
   auto apf = [&]() -> llvm::APFloat {
-    if (auto ty = mlir::dyn_cast<fir::RealType>(fltTy))
-      return llvm::APFloat(kindMap.getFloatSemantics(ty.getFKind()), val);
     if (fltTy.isF16())
       return llvm::APFloat(llvm::APFloat::IEEEhalf(), val);
     if (fltTy.isBF16())

diff  --git a/flang/lib/Optimizer/CodeGen/CodeGen.cpp b/flang/lib/Optimizer/CodeGen/CodeGen.cpp
index a8a92d8b046b5d..1cb869bfeb95a8 100644
--- a/flang/lib/Optimizer/CodeGen/CodeGen.cpp
+++ b/flang/lib/Optimizer/CodeGen/CodeGen.cpp
@@ -589,9 +589,7 @@ struct CallOpConversion : public fir::FIROpConversion<fir::CallOp> {
 } // namespace
 
 static mlir::Type getComplexEleTy(mlir::Type complex) {
-  if (auto cc = mlir::dyn_cast<mlir::ComplexType>(complex))
-    return cc.getElementType();
-  return mlir::cast<fir::ComplexType>(complex).getElementType();
+  return mlir::cast<mlir::ComplexType>(complex).getElementType();
 }
 
 namespace {

diff  --git a/flang/lib/Optimizer/CodeGen/Target.cpp b/flang/lib/Optimizer/CodeGen/Target.cpp
index 7239e16cc59f32..a12b59413f4456 100644
--- a/flang/lib/Optimizer/CodeGen/Target.cpp
+++ b/flang/lib/Optimizer/CodeGen/Target.cpp
@@ -41,8 +41,6 @@ llvm::StringRef Attributes::getIntExtensionAttrName() const {
 static const llvm::fltSemantics &floatToSemantics(const KindMapping &kindMap,
                                                   mlir::Type type) {
   assert(isa_real(type));
-  if (auto ty = mlir::dyn_cast<fir::RealType>(type))
-    return kindMap.getFloatSemantics(ty.getFKind());
   return mlir::cast<mlir::FloatType>(type).getFloatSemantics();
 }
 
@@ -356,7 +354,7 @@ struct TargetX86_64 : public GenericTarget<TargetX86_64> {
           else
             current = ArgClass::Integer;
         })
-        .template Case<mlir::FloatType, fir::RealType>([&](mlir::Type floatTy) {
+        .template Case<mlir::FloatType>([&](mlir::Type floatTy) {
           const auto *sem = &floatToSemantics(kindMap, floatTy);
           if (sem == &llvm::APFloat::x87DoubleExtended()) {
             Lo = ArgClass::X87;
@@ -540,9 +538,16 @@ struct TargetX86_64 : public GenericTarget<TargetX86_64> {
     if (typeList.size() != 1)
       return {};
     mlir::Type fieldType = typeList[0].second;
-    if (mlir::isa<mlir::FloatType, mlir::IntegerType, fir::RealType,
-                  fir::CharacterType, fir::LogicalType>(fieldType))
+    if (mlir::isa<mlir::FloatType, mlir::IntegerType, fir::LogicalType>(
+            fieldType))
       return fieldType;
+    if (mlir::isa<fir::CharacterType>(fieldType)) {
+      // Only CHARACTER(1) are expected in BIND(C) contexts, which is the only
+      // contexts where derived type may be passed in registers.
+      assert(mlir::cast<fir::CharacterType>(fieldType).getLen() == 1 &&
+             "fir.type value arg character components must have length 1");
+      return fieldType;
+    }
     // Complex field that needs to be split, or array.
     return {};
   }

diff  --git a/flang/lib/Optimizer/CodeGen/TargetRewrite.cpp b/flang/lib/Optimizer/CodeGen/TargetRewrite.cpp
index 925b93212b095e..fd56fd6bf50f44 100644
--- a/flang/lib/Optimizer/CodeGen/TargetRewrite.cpp
+++ b/flang/lib/Optimizer/CodeGen/TargetRewrite.cpp
@@ -351,11 +351,6 @@ class TargetRewrite : public fir::impl::TargetRewritePassBase<TargetRewrite> {
     if (fnTy.getResults().size() == 1) {
       mlir::Type ty = fnTy.getResult(0);
       llvm::TypeSwitch<mlir::Type>(ty)
-          .template Case<fir::ComplexType>([&](fir::ComplexType cmplx) {
-            wrap = rewriteCallComplexResultType(loc, cmplx, newResTys,
-                                                newInTyAndAttrs, newOpers,
-                                                savedStackPtr);
-          })
           .template Case<mlir::ComplexType>([&](mlir::ComplexType cmplx) {
             wrap = rewriteCallComplexResultType(loc, cmplx, newResTys,
                                                 newInTyAndAttrs, newOpers,
@@ -414,10 +409,6 @@ class TargetRewrite : public fir::impl::TargetRewritePassBase<TargetRewrite> {
               }
             }
           })
-          .template Case<fir::ComplexType>([&](fir::ComplexType cmplx) {
-            rewriteCallComplexInputType(loc, cmplx, oper, newInTyAndAttrs,
-                                        newOpers, savedStackPtr);
-          })
           .template Case<mlir::ComplexType>([&](mlir::ComplexType cmplx) {
             rewriteCallComplexInputType(loc, cmplx, oper, newInTyAndAttrs,
                                         newOpers, savedStackPtr);
@@ -538,10 +529,10 @@ class TargetRewrite : public fir::impl::TargetRewritePassBase<TargetRewrite> {
     }
   }
 
-  // Result type fixup for fir::ComplexType and mlir::ComplexType
-  template <typename A, typename B>
+  // Result type fixup for ComplexType.
+  template <typename Ty>
   void lowerComplexSignatureRes(
-      mlir::Location loc, A cmplx, B &newResTys,
+      mlir::Location loc, mlir::ComplexType cmplx, Ty &newResTys,
       fir::CodeGenSpecifics::Marshalling &newInTyAndAttrs) {
     if (noComplexConversion) {
       newResTys.push_back(cmplx);
@@ -557,10 +548,9 @@ class TargetRewrite : public fir::impl::TargetRewritePassBase<TargetRewrite> {
     }
   }
 
-  // Argument type fixup for fir::ComplexType and mlir::ComplexType
-  template <typename A>
+  // Argument type fixup for ComplexType.
   void lowerComplexSignatureArg(
-      mlir::Location loc, A cmplx,
+      mlir::Location loc, mlir::ComplexType cmplx,
       fir::CodeGenSpecifics::Marshalling &newInTyAndAttrs) {
     if (noComplexConversion) {
       newInTyAndAttrs.push_back(fir::CodeGenSpecifics::getTypeAndAttr(cmplx));
@@ -602,9 +592,6 @@ class TargetRewrite : public fir::impl::TargetRewritePassBase<TargetRewrite> {
     auto loc = addrOp.getLoc();
     for (mlir::Type ty : addrTy.getResults()) {
       llvm::TypeSwitch<mlir::Type>(ty)
-          .Case<fir::ComplexType>([&](fir::ComplexType ty) {
-            lowerComplexSignatureRes(loc, ty, newResTys, newInTyAndAttrs);
-          })
           .Case<mlir::ComplexType>([&](mlir::ComplexType ty) {
             lowerComplexSignatureRes(loc, ty, newResTys, newInTyAndAttrs);
           })
@@ -628,9 +615,6 @@ class TargetRewrite : public fir::impl::TargetRewritePassBase<TargetRewrite> {
               }
             }
           })
-          .Case<fir::ComplexType>([&](fir::ComplexType ty) {
-            lowerComplexSignatureArg(loc, ty, newInTyAndAttrs);
-          })
           .Case<mlir::ComplexType>([&](mlir::ComplexType ty) {
             lowerComplexSignatureArg(loc, ty, newInTyAndAttrs);
           })
@@ -766,12 +750,6 @@ class TargetRewrite : public fir::impl::TargetRewritePassBase<TargetRewrite> {
     // Convert return value(s)
     for (auto ty : funcTy.getResults())
       llvm::TypeSwitch<mlir::Type>(ty)
-          .Case<fir::ComplexType>([&](fir::ComplexType cmplx) {
-            if (noComplexConversion)
-              newResTys.push_back(cmplx);
-            else
-              doComplexReturn(func, cmplx, newResTys, newInTyAndAttrs, fixups);
-          })
           .Case<mlir::ComplexType>([&](mlir::ComplexType cmplx) {
             if (noComplexConversion)
               newResTys.push_back(cmplx);
@@ -835,9 +813,6 @@ class TargetRewrite : public fir::impl::TargetRewritePassBase<TargetRewrite> {
               }
             }
           })
-          .Case<fir::ComplexType>([&](fir::ComplexType cmplx) {
-            doComplexArg(func, cmplx, newInTyAndAttrs, fixups);
-          })
           .Case<mlir::ComplexType>([&](mlir::ComplexType cmplx) {
             doComplexArg(func, cmplx, newInTyAndAttrs, fixups);
           })
@@ -1090,10 +1065,11 @@ class TargetRewrite : public fir::impl::TargetRewritePassBase<TargetRewrite> {
   /// Convert a complex return value. This can involve converting the return
   /// value to a "hidden" first argument or packing the complex into a wide
   /// GPR.
-  template <typename A, typename B, typename C>
-  void doComplexReturn(mlir::func::FuncOp func, A cmplx, B &newResTys,
+  template <typename Ty, typename FIXUPS>
+  void doComplexReturn(mlir::func::FuncOp func, mlir::ComplexType cmplx,
+                       Ty &newResTys,
                        fir::CodeGenSpecifics::Marshalling &newInTyAndAttrs,
-                       C &fixups) {
+                       FIXUPS &fixups) {
     if (noComplexConversion) {
       newResTys.push_back(cmplx);
       return;
@@ -1194,10 +1170,10 @@ class TargetRewrite : public fir::impl::TargetRewritePassBase<TargetRewrite> {
   /// Convert a complex argument value. This can involve storing the value to
   /// a temporary memory location or factoring the value into two distinct
   /// arguments.
-  template <typename A, typename B>
-  void doComplexArg(mlir::func::FuncOp func, A cmplx,
+  template <typename FIXUPS>
+  void doComplexArg(mlir::func::FuncOp func, mlir::ComplexType cmplx,
                     fir::CodeGenSpecifics::Marshalling &newInTyAndAttrs,
-                    B &fixups) {
+                    FIXUPS &fixups) {
     if (noComplexConversion) {
       newInTyAndAttrs.push_back(fir::CodeGenSpecifics::getTypeAndAttr(cmplx));
       return;

diff  --git a/flang/lib/Optimizer/CodeGen/TypeConverter.cpp b/flang/lib/Optimizer/CodeGen/TypeConverter.cpp
index 1043494b6fb48a..c23203efcd3df2 100644
--- a/flang/lib/Optimizer/CodeGen/TypeConverter.cpp
+++ b/flang/lib/Optimizer/CodeGen/TypeConverter.cpp
@@ -57,8 +57,6 @@ LLVMTypeConverter::LLVMTypeConverter(mlir::ModuleOp module, bool applyTBAA,
       [&](fir::ClassType classTy) { return convertBoxType(classTy); });
   addConversion(
       [&](fir::CharacterType charTy) { return convertCharType(charTy); });
-  addConversion(
-      [&](fir::ComplexType cmplx) { return convertComplexType(cmplx); });
   addConversion([&](fir::FieldType field) {
     // Convert to i32 because of LLVM GEP indexing restriction.
     return mlir::IntegerType::get(field.getContext(), 32);
@@ -86,8 +84,6 @@ LLVMTypeConverter::LLVMTypeConverter(mlir::ModuleOp module, bool applyTBAA,
       [&](fir::RecordType derived, llvm::SmallVectorImpl<mlir::Type> &results) {
         return convertRecordType(derived, results);
       });
-  addConversion(
-      [&](fir::RealType real) { return convertRealType(real.getFKind()); });
   addConversion(
       [&](fir::ReferenceType ref) { return convertPointerLike(ref); });
   addConversion([&](fir::SequenceType sequence) {
@@ -277,13 +273,6 @@ mlir::Type LLVMTypeConverter::convertCharType(fir::CharacterType charTy) const {
   return mlir::LLVM::LLVMArrayType::get(iTy, charTy.getLen());
 }
 
-// convert a front-end kind value to either a std or LLVM IR dialect type
-// fir.real<n>  -->  llvm.anyfloat  where anyfloat is a kind mapping
-mlir::Type LLVMTypeConverter::convertRealType(fir::KindTy kind) const {
-  return fir::fromRealTypeID(&getContext(), kindMapping.getRealTypeID(kind),
-                             kind);
-}
-
 // fir.array<c ... :any>  -->  llvm<"[...[c x any]]">
 mlir::Type LLVMTypeConverter::convertSequenceType(SequenceType seq) const {
   auto baseTy = convertType(seq.getEleTy());

diff  --git a/flang/lib/Optimizer/Dialect/FIROps.cpp b/flang/lib/Optimizer/Dialect/FIROps.cpp
index eee868eec535b3..8fdc06f6fce3f5 100644
--- a/flang/lib/Optimizer/Dialect/FIROps.cpp
+++ b/flang/lib/Optimizer/Dialect/FIROps.cpp
@@ -1347,7 +1347,7 @@ bool fir::ConvertOp::isIntegerCompatible(mlir::Type ty) {
 }
 
 bool fir::ConvertOp::isFloatCompatible(mlir::Type ty) {
-  return mlir::isa<mlir::FloatType, fir::RealType>(ty);
+  return mlir::isa<mlir::FloatType>(ty);
 }
 
 bool fir::ConvertOp::isPointerCompatible(mlir::Type ty) {
@@ -1533,8 +1533,6 @@ llvm::LogicalResult fir::CoordinateOp::verify() {
       } else if (auto t = mlir::dyn_cast<fir::RecordType>(eleTy)) {
         // FIXME: This is the same as the tuple case.
         return mlir::success();
-      } else if (auto t = mlir::dyn_cast<fir::ComplexType>(eleTy)) {
-        eleTy = t.getElementType();
       } else if (auto t = mlir::dyn_cast<mlir::ComplexType>(eleTy)) {
         eleTy = t.getElementType();
       } else if (auto t = mlir::dyn_cast<fir::CharacterType>(eleTy)) {
@@ -4389,14 +4387,6 @@ mlir::Type fir::applyPathToType(mlir::Type eleTy, mlir::ValueRange path) {
                       return ty.getType(fir::toInt(off));
                   return mlir::Type{};
                 })
-                .Case<fir::ComplexType>([&](fir::ComplexType ty) {
-                  auto x = *i;
-                  if (auto *op = (*i++).getDefiningOp())
-                    if (fir::isa_integer(x.getType()))
-                      return ty.getEleType(fir::getKindMapping(
-                          op->getParentOfType<mlir::ModuleOp>()));
-                  return mlir::Type{};
-                })
                 .Case<mlir::ComplexType>([&](mlir::ComplexType ty) {
                   if (fir::isa_integer((*i++).getType()))
                     return ty.getElementType();

diff  --git a/flang/lib/Optimizer/Dialect/FIRType.cpp b/flang/lib/Optimizer/Dialect/FIRType.cpp
index 7a516298e5ef4f..70c0fd66d18aee 100644
--- a/flang/lib/Optimizer/Dialect/FIRType.cpp
+++ b/flang/lib/Optimizer/Dialect/FIRType.cpp
@@ -441,7 +441,6 @@ unsigned getBoxRank(mlir::Type boxTy) {
 
 /// Return the ISO_C_BINDING intrinsic module value of type \p ty.
 int getTypeCode(mlir::Type ty, const fir::KindMapping &kindMap) {
-  unsigned width = 0;
   if (mlir::IntegerType intTy = mlir::dyn_cast<mlir::IntegerType>(ty)) {
     switch (intTy.getWidth()) {
     case 8:
@@ -485,21 +484,12 @@ int getTypeCode(mlir::Type ty, const fir::KindMapping &kindMap) {
     }
     llvm_unreachable("unsupported real type");
   }
-  if (fir::isa_complex(ty)) {
-    if (mlir::ComplexType complexTy = mlir::dyn_cast<mlir::ComplexType>(ty)) {
-      mlir::FloatType floatTy =
-          mlir::cast<mlir::FloatType>(complexTy.getElementType());
-      if (floatTy.isBF16())
-        return CFI_type_bfloat_Complex;
-      width = floatTy.getWidth();
-    } else if (fir::ComplexType complexTy =
-                   mlir::dyn_cast<fir::ComplexType>(ty)) {
-      auto FKind = complexTy.getFKind();
-      if (FKind == 3)
-        return CFI_type_bfloat_Complex;
-      width = kindMap.getRealBitsize(FKind);
-    }
-    switch (width) {
+  if (mlir::ComplexType complexTy = mlir::dyn_cast<mlir::ComplexType>(ty)) {
+    mlir::FloatType floatTy =
+        mlir::cast<mlir::FloatType>(complexTy.getElementType());
+    if (floatTy.isBF16())
+      return CFI_type_bfloat_Complex;
+    switch (floatTy.getWidth()) {
     case 16:
       return CFI_type_half_float_Complex;
     case 32:
@@ -545,14 +535,10 @@ std::string getTypeAsString(mlir::Type ty, const fir::KindMapping &kindMap,
         name << 'i' << ty.getIntOrFloatBitWidth();
       } else if (mlir::isa<mlir::FloatType>(ty)) {
         name << 'f' << ty.getIntOrFloatBitWidth();
-      } else if (fir::isa_complex(ty)) {
+      } else if (auto cplxTy = mlir::dyn_cast_or_null<mlir::ComplexType>(ty)) {
         name << 'z';
-        if (auto cplxTy = mlir::dyn_cast_or_null<mlir::ComplexType>(ty)) {
-          auto floatTy = mlir::cast<mlir::FloatType>(cplxTy.getElementType());
-          name << floatTy.getWidth();
-        } else if (auto cplxTy = mlir::dyn_cast_or_null<fir::ComplexType>(ty)) {
-          name << kindMap.getRealBitsize(cplxTy.getFKind());
-        }
+        auto floatTy = mlir::cast<mlir::FloatType>(cplxTy.getElementType());
+        name << floatTy.getWidth();
       } else if (auto logTy = mlir::dyn_cast_or_null<fir::LogicalType>(ty)) {
         name << 'l' << kindMap.getLogicalBitsize(logTy.getFKind());
       } else {
@@ -778,34 +764,11 @@ fir::ClassType::verify(llvm::function_ref<mlir::InFlightDiagnostic()> emitError,
   if (mlir::isa<fir::RecordType, fir::SequenceType, fir::HeapType,
                 fir::PointerType, mlir::NoneType, mlir::IntegerType,
                 mlir::FloatType, fir::CharacterType, fir::LogicalType,
-                fir::ComplexType, mlir::ComplexType>(eleTy))
+                mlir::ComplexType>(eleTy))
     return mlir::success();
   return emitError() << "invalid element type\n";
 }
 
-//===----------------------------------------------------------------------===//
-// ComplexType
-//===----------------------------------------------------------------------===//
-
-mlir::Type fir::ComplexType::parse(mlir::AsmParser &parser) {
-  return parseKindSingleton<fir::ComplexType>(parser);
-}
-
-void fir::ComplexType::print(mlir::AsmPrinter &printer) const {
-  printer << "<" << getFKind() << '>';
-}
-
-mlir::Type fir::ComplexType::getElementType() const {
-  return fir::RealType::get(getContext(), getFKind());
-}
-
-// Return the MLIR float type of the complex element type.
-mlir::Type fir::ComplexType::getEleType(const fir::KindMapping &kindMap) const {
-  auto fkind = getFKind();
-  auto realTypeID = kindMap.getRealTypeID(fkind);
-  return fir::fromRealTypeID(getContext(), realTypeID, fkind);
-}
-
 //===----------------------------------------------------------------------===//
 // HeapType
 //===----------------------------------------------------------------------===//
@@ -875,32 +838,6 @@ llvm::LogicalResult fir::PointerType::verify(
   return mlir::success();
 }
 
-//===----------------------------------------------------------------------===//
-// RealType
-//===----------------------------------------------------------------------===//
-
-// `real` `<` kind `>`
-mlir::Type fir::RealType::parse(mlir::AsmParser &parser) {
-  return parseKindSingleton<fir::RealType>(parser);
-}
-
-void fir::RealType::print(mlir::AsmPrinter &printer) const {
-  printer << "<" << getFKind() << '>';
-}
-
-llvm::LogicalResult
-fir::RealType::verify(llvm::function_ref<mlir::InFlightDiagnostic()> emitError,
-                      KindTy fKind) {
-  // TODO
-  return mlir::success();
-}
-
-mlir::Type fir::RealType::getFloatType(const fir::KindMapping &kindMap) const {
-  auto fkind = getFKind();
-  auto realTypeID = kindMap.getRealTypeID(fkind);
-  return fir::fromRealTypeID(getContext(), realTypeID, fkind);
-}
-
 //===----------------------------------------------------------------------===//
 // RecordType
 //===----------------------------------------------------------------------===//
@@ -1367,10 +1304,10 @@ bool fir::BaseBoxType::isAssumedRank() const {
 
 void FIROpsDialect::registerTypes() {
   addTypes<BoxType, BoxCharType, BoxProcType, CharacterType, ClassType,
-           fir::ComplexType, FieldType, HeapType, fir::IntegerType, LenType,
-           LogicalType, LLVMPointerType, PointerType, RealType, RecordType,
-           ReferenceType, SequenceType, ShapeType, ShapeShiftType, ShiftType,
-           SliceType, TypeDescType, fir::VectorType, fir::DummyScopeType>();
+           FieldType, HeapType, fir::IntegerType, LenType, LogicalType,
+           LLVMPointerType, PointerType, RecordType, ReferenceType,
+           SequenceType, ShapeType, ShapeShiftType, ShiftType, SliceType,
+           TypeDescType, fir::VectorType, fir::DummyScopeType>();
   fir::ReferenceType::attachInterface<
       OpenMPPointerLikeModel<fir::ReferenceType>>(*getContext());
   fir::ReferenceType::attachInterface<
@@ -1401,19 +1338,6 @@ fir::getTypeSizeAndAlignment(mlir::Location loc, mlir::Type ty,
     unsigned short alignment = dl.getTypeABIAlignment(ty);
     return std::pair{size, alignment};
   }
-  if (auto firCmplx = mlir::dyn_cast<fir::ComplexType>(ty)) {
-    auto result =
-        getTypeSizeAndAlignment(loc, firCmplx.getEleType(kindMap), dl, kindMap);
-    if (!result)
-      return result;
-    auto [floatSize, floatAlign] = *result;
-    return std::pair{llvm::alignTo(floatSize, floatAlign) + floatSize,
-                     floatAlign};
-  }
-  if (auto real = mlir::dyn_cast<fir::RealType>(ty))
-    return getTypeSizeAndAlignment(loc, real.getFloatType(kindMap), dl,
-                                   kindMap);
-
   if (auto seqTy = mlir::dyn_cast<fir::SequenceType>(ty)) {
     auto result = getTypeSizeAndAlignment(loc, seqTy.getEleTy(), dl, kindMap);
     if (!result)

diff  --git a/flang/lib/Optimizer/HLFIR/IR/HLFIROps.cpp b/flang/lib/Optimizer/HLFIR/IR/HLFIROps.cpp
index 72f5ba673d41fe..ed301c74c9eded 100644
--- a/flang/lib/Optimizer/HLFIR/IR/HLFIROps.cpp
+++ b/flang/lib/Optimizer/HLFIR/IR/HLFIROps.cpp
@@ -380,9 +380,7 @@ llvm::LogicalResult hlfir::DesignateOp::verify() {
   // length may 
diff er because of substrings.
   if (resultElementType != outputElementType &&
       !(mlir::isa<fir::CharacterType>(resultElementType) &&
-        mlir::isa<fir::CharacterType>(outputElementType)) &&
-      !(mlir::isa<mlir::FloatType>(resultElementType) &&
-        mlir::isa<fir::RealType>(outputElementType)))
+        mlir::isa<fir::CharacterType>(outputElementType)))
     return emitOpError(
                "result element type is not consistent with operands, expected ")
            << outputElementType;

diff  --git a/flang/lib/Optimizer/Transforms/DebugTypeGenerator.cpp b/flang/lib/Optimizer/Transforms/DebugTypeGenerator.cpp
index 1b9b58955b15b1..71e534b4f2e2a3 100644
--- a/flang/lib/Optimizer/Transforms/DebugTypeGenerator.cpp
+++ b/flang/lib/Optimizer/Transforms/DebugTypeGenerator.cpp
@@ -494,10 +494,6 @@ DebugTypeGenerator::convertType(mlir::Type Ty, mlir::LLVM::DIFileAttr fileAttr,
   } else if (mlir::isa<mlir::FloatType>(Ty)) {
     return genBasicType(context, mlir::StringAttr::get(context, "real"),
                         Ty.getIntOrFloatBitWidth(), llvm::dwarf::DW_ATE_float);
-  } else if (auto realTy = mlir::dyn_cast_or_null<fir::RealType>(Ty)) {
-    return genBasicType(context, mlir::StringAttr::get(context, "real"),
-                        kindMapping.getRealBitsize(realTy.getFKind()),
-                        llvm::dwarf::DW_ATE_float);
   } else if (auto logTy = mlir::dyn_cast_or_null<fir::LogicalType>(Ty)) {
     return genBasicType(context,
                         mlir::StringAttr::get(context, logTy.getMnemonic()),

diff  --git a/flang/test/Fir/constant.fir b/flang/test/Fir/constant.fir
index 380c6121acf9be..c204b7c426146e 100644
--- a/flang/test/Fir/constant.fir
+++ b/flang/test/Fir/constant.fir
@@ -7,15 +7,6 @@ func.func @x() -> !fir.char<1,3> {
   return %1 : !fir.char<1,3>
 }
 
-// CHECK-LABEL: define x86_fp80 @y()
-func.func @y() -> !fir.real<10> {
- %c1 = arith.constant 42.4 :f32
- %0 = fir.convert %c1 : (f32) -> !fir.real<10>
-  // CHECK: ret x86_fp80 0xK4004A9999A0000000000
-  // TODO: What's that number?
-  return %0 : !fir.real<10>
-}
-
 // CHECK-LABEL: define i16 @z()
 func.func @z() -> !fir.logical<2> {
   %1 = arith.constant true

diff  --git a/flang/test/Fir/fir-types.fir b/flang/test/Fir/fir-types.fir
index 636976ecd5544c..083aca31d8e05d 100644
--- a/flang/test/Fir/fir-types.fir
+++ b/flang/test/Fir/fir-types.fir
@@ -4,14 +4,12 @@
 
 // Fortran Intrinsic types
 // CHECK-LABEL: func private @it1() -> !fir.int<4>
-// CHECK-LABEL: func private @it2() -> !fir.real<8>
 // CHECK-LABEL: func private @it3() -> complex<f64>
 // CHECK-LABEL: func private @it4() -> !fir.logical<1>
 // CHECK-LABEL: func private @it5() -> !fir.char<1>
 // CHECK-LABEL: func private @it6() -> !fir.char<2,10>
 // CHECK-LABEL: func private @it7() -> !fir.char<4,?>
 func.func private @it1() -> !fir.int<4>
-func.func private @it2() -> !fir.real<8>
 func.func private @it3() -> complex<f64>
 func.func private @it4() -> !fir.logical<1>
 func.func private @it5() -> !fir.char<1>

diff  --git a/flang/test/Fir/invalid-types.fir b/flang/test/Fir/invalid-types.fir
index 18bc9f7b4896ab..f4505097086ad8 100644
--- a/flang/test/Fir/invalid-types.fir
+++ b/flang/test/Fir/invalid-types.fir
@@ -27,11 +27,6 @@ func.func private @it6() -> !fir.char<2, >
 
 // -----
 
-// expected-error at +1 {{expected integer value}}
-func.func private @it3() -> !fir.complex<>
-
-// -----
-
 // expected-error at +1 {{expected non-function type}}
 func.func private @mem3() -> !fir.heap<>
 
@@ -52,11 +47,6 @@ func.func private @mem3() -> !fir.ptr<>
 
 // -----
 
-// expected-error at +1 {{expected integer value}}
-func.func private @mem3() -> !fir.real<>
-
-// -----
-
 // expected-error at +1 {{expected valid keyword}}
 func.func private @mem3() -> !fir.type<>
 

diff  --git a/flang/test/Fir/target.fir b/flang/test/Fir/target.fir
index 6c58d7c9cbf71e..788deebcb5e84f 100644
--- a/flang/test/Fir/target.fir
+++ b/flang/test/Fir/target.fir
@@ -10,9 +10,8 @@
 func.func @gen4() -> complex<f32> {
   %1 = fir.undefined complex<f32>
   %2 = arith.constant 2.0 : f32
-  %3 = fir.convert %2 : (f32) -> !fir.real<4>
   %c0 = arith.constant 0 : i32
-  %4 = fir.insert_value %1, %3, [0 : index] : (complex<f32>, !fir.real<4>) -> complex<f32>
+  %4 = fir.insert_value %1, %2, [0 : index] : (complex<f32>, f32) -> complex<f32>
   %c1 = arith.constant 1 : i32
   %5 = arith.constant -42.0 : f32
   %6 = fir.insert_value %4, %5, [1 : index] : (complex<f32>, f32) -> complex<f32>

diff  --git a/flang/test/Fir/types-to-llvm.fir b/flang/test/Fir/types-to-llvm.fir
index cb2b6e5756af8b..80bdb6ad87c762 100644
--- a/flang/test/Fir/types-to-llvm.fir
+++ b/flang/test/Fir/types-to-llvm.fir
@@ -329,30 +329,6 @@ func.func private @foo10(%arg0: !fir.vector<30:i64>)
 // CHECK-LABEL: foo10
 // CHECK-SAME: vector<30xi64>
 
-func.func private @foo11(%arg0: !fir.vector<2:!fir.real<2>>)
-// CHECK-LABEL: foo11
-// CHECK-SAME: vector<2xf16>
-
-func.func private @foo12(%arg0: !fir.vector<2:!fir.real<3>>)
-// CHECK-LABEL: foo12
-// CHECK-SAME: vector<2xbf16>
-
-func.func private @foo13(%arg0: !fir.vector<2:!fir.real<4>>)
-// CHECK-LABEL: foo13
-// CHECK-SAME: vector<2xf32>
-
-func.func private @foo14(%arg0: !fir.vector<2:!fir.real<8>>)
-// CHECK-LABEL: foo14
-// CHECK-SAME: vector<2xf64>
-
-func.func private @foo15(%arg0: !fir.vector<2:!fir.real<10>>)
-// CHECK-LABEL: foo15
-// CHECK-SAME: vector<2xf80>
-
-func.func private @foo16(%arg0: !fir.vector<2:!fir.real<16>>)
-// CHECK-LABEL: foo16
-// CHECK-SAME: vector<2xf128>
-
 // -----
 
 // Test `!fir.boxchar<n>` conversion

diff  --git a/flang/test/Transforms/debug-90683.fir b/flang/test/Transforms/debug-90683.fir
deleted file mode 100644
index fd1d0d0e705bde..00000000000000
--- a/flang/test/Transforms/debug-90683.fir
+++ /dev/null
@@ -1,25 +0,0 @@
-// RUN: fir-opt --add-debug-info --mlir-print-debuginfo %s -o - | FileCheck %s
-
-// This test checks that debug information for fir.real type works ok.
-
-module attributes {dlti.dl_spec = #dlti.dl_spec<>} {
-  func.func @_QPfn1(%arg0: !fir.ref<complex<f64>> {fir.bindc_name = "a"} ) {
-    %0 = fir.declare %arg0 {uniq_name = "_QFfn1Ea"} : (!fir.ref<complex<f64>>) -> !fir.ref<complex<f64>>
-    %1 = fir.alloca f32 {bindc_name = "abserror", uniq_name = "_QFfn1Eabserror"}
-    %2 = fir.declare %1 {uniq_name = "_QFfn1Eabserror"} : (!fir.ref<f32>) -> !fir.ref<f32>
-    %3 = fir.load %0 : !fir.ref<complex<f64>>
-    %4 = fir.extract_value %3, [0 : i32] : (complex<f64>) -> !fir.real<8>
-    %5 = fir.extract_value %3, [1 : i32] : (complex<f64>) -> !fir.real<8>
-    %6 = fir.call @cabs(%4, %5) : (!fir.real<8>, !fir.real<8>) -> f64
-    %7 = fir.convert %6 : (f64) -> f32
-    fir.store %7 to %2 : !fir.ref<f32>
-    return
-  } loc(#loc1)
-  func.func private @cabs(!fir.real<8>, !fir.real<8>) -> f64 attributes {fir.bindc_name = "cabs", fir.runtime}
-} loc(#loc)
-#loc1 = loc("test.f90":5:1)
-#loc = loc("test.f90":0:0)
-
-// CHECK-DAG: #[[TY:.*]] = #llvm.di_basic_type<tag = DW_TAG_base_type, name = "real", sizeInBits = 64, encoding = DW_ATE_float>
-// CHECK-DAG: #[[TY1:.*]] = #llvm.di_subroutine_type<callingConvention = DW_CC_normal, types = #[[TY]], #[[TY]], #[[TY]]>
-// CHECK-DAG: #{{.*}} = #llvm.di_subprogram<{{.*}}name = "cabs", linkageName = "cabs"{{.*}}, type = #[[TY1]]>


        


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