ValueTypes.td: Introduce VTAny as isOverloaded = true

`ValueType.isOverloaded` is used for;

  - Define `iPTRAny`, `vAny`, `fAny`, and `Any`
  - Reflect `ValueType.isOverloaded` to `LLVMType.isAny` in `Intrinsics.td`
  - (Planninig) Reflect the condition to `MVT::isOverloaded()`

Part of D146179

Author: chapuni

llvm/include/llvm/CodeGen/ValueTypes.td

@@ -16,6 +16,11 @@ class ValueType<int size, int value> {
   string Namespace = "MVT";
   int Size = size;
   int Value = value;
+  int isOverloaded = false;
+}
+
+class VTAny<int value> : ValueType<0, value> {
+  let isOverloaded = true;
 }
 
 def OtherVT : ValueType<0,   1>;  // "Other" value
@@ -245,22 +250,22 @@ def MetadataVT : ValueType<0, 249>;  // Metadata
 
 // Pseudo valuetype mapped to the current pointer size to any address space.
 // Should only be used in TableGen.
-def iPTRAny    : ValueType<0, 250>;
+def iPTRAny    : VTAny<250>;
 
 // Pseudo valuetype to represent "vector of any size"
-def vAny       : ValueType<0, 251>;
+def vAny       : VTAny<251>;
 
 // Pseudo valuetype to represent "float of any format"
-def fAny       : ValueType<0, 252>;
+def fAny       : VTAny<252>;
 
 // Pseudo valuetype to represent "integer of any bit width"
-def iAny       : ValueType<0, 253>;
+def iAny       : VTAny<253>;
 
 // Pseudo valuetype mapped to the current pointer size.
 def iPTR       : ValueType<0, 254>;
 
 // Pseudo valuetype to represent "any type of any size".
-def Any        : ValueType<0, 255>;
+def Any        : VTAny<255>;
 
 /// This class is for targets that want to use pointer types in patterns
 /// with the GlobalISelEmitter.  Targets must define their own pointer

llvm/include/llvm/IR/Intrinsics.td

@@ -188,7 +188,7 @@ def ArgKind {
 
 class LLVMType<ValueType vt> {
   ValueType VT = vt;
-  int isAny = false;
+  int isAny = vt.isOverloaded;
 }
 
 class LLVMQualPointerType<LLVMType elty, int addrspace>
@@ -204,7 +204,7 @@ class LLVMAnyPointerType<LLVMType elty>
   : LLVMType<iPTRAny>{
   LLVMType ElTy = elty;
 
-  let isAny = true;
+  assert isAny, "iPTRAny should have isOverloaded";
 }
 
 // Match the type of another intrinsic parameter.  Number is an index into the
@@ -254,12 +254,12 @@ class LLVMSubdivide4VectorType<int num> : LLVMMatchType<num>;
 class LLVMVectorOfBitcastsToInt<int num> : LLVMMatchType<num>;
 
 def llvm_void_ty       : LLVMType<isVoid>;
-let isAny = true in {
-  def llvm_any_ty        : LLVMType<Any>;
-  def llvm_anyint_ty     : LLVMType<iAny>;
-  def llvm_anyfloat_ty   : LLVMType<fAny>;
-  def llvm_anyvector_ty  : LLVMType<vAny>;
-}
+
+def llvm_any_ty        : LLVMType<Any>;
+def llvm_anyint_ty     : LLVMType<iAny>;
+def llvm_anyfloat_ty   : LLVMType<fAny>;
+def llvm_anyvector_ty  : LLVMType<vAny>;
+
 def llvm_i1_ty         : LLVMType<i1>;
 def llvm_i8_ty         : LLVMType<i8>;
 def llvm_i16_ty        : LLVMType<i16>;