[DirectX] Lower @llvm.dx.handle.fromBinding to DXIL ops

llvm/docs/DirectX/DXILOpTableGenDesign.rst

@@ -93,18 +93,14 @@ properties are specified as fields of the ``DXILOp`` class as described below.
         class DXILOpClass;
 
    Concrete operation records, such as ``unary`` are defined by inheriting from ``DXILOpClass``.
-6. Return type of the operation is represented as ``LLVMType``.
-7. Operation arguments are represented as a list of ``LLVMType`` with each type
-   corresponding to the argument position. An overload type, if supported by the operation, is
-   denoted as the positional type ``overloadTy`` in the argument or in the result, where
-   ``overloadTy`` is defined to be synonymous to ``llvm_any_ty``.
-
-   .. code-block::
-
-      defvar overloadTy = llvm_any_ty
-
-   Empty list, ``[]`` represents an operation with no arguments.
-
+6. A set of type names are defined that represent return and argument types,
+   which all inherit from ``DXILOpParamType``. These represent simple types
+   like ``int32Ty``, DXIL types like ``dx.types.Handle``, and a special
+   ``overloadTy`` which can be any type allowed by ``Overloads``, described
+   below.
+7. Operation return type is represented as a ``DXILOpParamType``, and arguments
+   are represented as a list of the same. An operation with no return value
+   shall specify ``VoidTy`` as its return.
 8. Valid operation overload types predicated on DXIL version are specified as
    a list of ``Overloads`` records. Representation of ``Overloads``
    class is described in a later section.
@@ -145,10 +141,10 @@ TableGen representations of its properties described above.
      Intrinsic LLVMIntrinsic = ?;
 
      // Result type of the op.
-     LLVMType result;
+     DXILOpParamType result;
 
      // List of argument types of the op. Default to 0 arguments.
-     list<LLVMType> arguments = [];
+     list<DXILOpParamType> arguments = [];
 
      // List of valid overload types predicated by DXIL version
      list<Overloads> overloads;
@@ -233,9 +229,9 @@ overloads predicated on DXIL version as list of records of the following class
 
 .. code-block::
 
-   class Overloads<Version minver, list<LLVMType> ols> {
+   class Overloads<Version minver, list<DXILOpParamType> ols> {
      Version dxil_version = minver;
-     list<LLVMType> overload_types = ols;
+     list<DXILOpParamType> overload_types = ols;
    }
 
 Following is an example specification of valid overload types for ``DXIL1_0`` and

llvm/include/llvm/Analysis/DXILResource.h

@@ -23,6 +23,7 @@ class TargetExtType;
 namespace dxil {
 
 class ResourceInfo {
+public:
   struct ResourceBinding {
     uint32_t RecordID;
     uint32_t Space;
@@ -89,6 +90,7 @@ class ResourceInfo {
     bool operator!=(const FeedbackInfo &RHS) const { return !(*this == RHS); }
   };
 
+private:
   // Universal properties.
   Value *Symbol;
   StringRef Name;
@@ -115,6 +117,10 @@ class ResourceInfo {
 
   MSInfo MultiSample;
 
+  // We need a default constructor if we want to insert this in a MapVector.
+  ResourceInfo() {}
+  friend class MapVector<CallInst *, ResourceInfo>;
+
 public:
   ResourceInfo(dxil::ResourceClass RC, dxil::ResourceKind Kind, Value *Symbol,
                StringRef Name)
@@ -166,6 +172,8 @@ class ResourceInfo {
     MultiSample.Count = Count;
   }
 
+  dxil::ResourceClass getResourceClass() const { return RC; }
+
   bool operator==(const ResourceInfo &RHS) const;
 
   static ResourceInfo SRV(Value *Symbol, StringRef Name,

llvm/include/llvm/IR/IntrinsicsDirectX.td

@@ -30,6 +30,9 @@ def int_dx_handle_fromBinding
           [llvm_i32_ty, llvm_i32_ty, llvm_i32_ty, llvm_i32_ty, llvm_i1_ty],
           [IntrNoMem]>;
 
+// Cast between target extension handle types and dxil-style opaque handles
+def int_dx_cast_handle : Intrinsic<[llvm_any_ty], [llvm_any_ty]>;
+
 def int_dx_all : DefaultAttrsIntrinsic<[llvm_i1_ty], [llvm_any_ty]>;
 def int_dx_any : DefaultAttrsIntrinsic<[llvm_i1_ty], [llvm_any_ty]>;
 def int_dx_clamp : DefaultAttrsIntrinsic<[llvm_any_ty], [LLVMMatchType<0>, LLVMMatchType<0>, LLVMMatchType<0>]>;

llvm/include/llvm/Support/DXILABI.h

@@ -22,23 +22,6 @@
 namespace llvm {
 namespace dxil {
 
-enum class ParameterKind : uint8_t {
-  Invalid = 0,
-  Void,
-  Half,
-  Float,
-  Double,
-  I1,
-  I8,
-  I16,
-  I32,
-  I64,
-  Overload,
-  CBufferRet,
-  ResourceRet,
-  DXILHandle,
-};
-
 enum class ResourceClass : uint8_t {
   SRV = 0,
   UAV,