[DXIL][Analysis] Implement enough of DXILResourceAnalysis for buffers

This implements the DXILResourceAnalysis pass for `dx.TypedBuffer` and
`dx.RawBuffer` types. This should be sufficient to lower
`dx.handle.fromBinding` for this set of types, but it leaves a number
of TODOs around for other resource types.

This also includes a straightforward `print` method in `ResourceInfo`
to make the analysis testable. This is deliberately different than the
printer in `lib/Target/DirectX/DXILResource.cpp`, which attempts to
print bindings in a format compatible with the comments `dxc` prints.
We will eventually want to make that functionality driven by this
analysis pass, but it isn't sufficient for testing so we need both.

Pull Request: llvm#100699

llvm/include/llvm/Analysis/DXILResource.h

@@ -18,19 +18,20 @@
 namespace llvm {
 class CallInst;
 class MDTuple;
+class TargetExtType;
 
 namespace dxil {
 
 class ResourceInfo {
   struct ResourceBinding {
-    uint32_t UniqueID;
+    uint32_t RecordID;
     uint32_t Space;
     uint32_t LowerBound;
     uint32_t Size;
 
     bool operator==(const ResourceBinding &RHS) const {
-      return std::tie(UniqueID, Space, LowerBound, Size) ==
-             std::tie(RHS.UniqueID, RHS.Space, RHS.LowerBound, RHS.Size);
+      return std::tie(RecordID, Space, LowerBound, Size) ==
+             std::tie(RHS.RecordID, RHS.Space, RHS.LowerBound, RHS.Size);
     }
     bool operator!=(const ResourceBinding &RHS) const {
       return !(*this == RHS);
@@ -128,9 +129,9 @@ class ResourceInfo {
   bool isFeedback() const;
   bool isMultiSample() const;
 
-  void bind(uint32_t UniqueID, uint32_t Space, uint32_t LowerBound,
+  void bind(uint32_t RecordID, uint32_t Space, uint32_t LowerBound,
             uint32_t Size) {
-    Binding.UniqueID = UniqueID;
+    Binding.RecordID = RecordID;
     Binding.Space = Space;
     Binding.LowerBound = LowerBound;
     Binding.Size = Size;
@@ -215,6 +216,8 @@ class ResourceInfo {
 
   ResourceBinding getBinding() const { return Binding; }
   std::pair<uint32_t, uint32_t> getAnnotateProps() const;
+
+  void print(raw_ostream &OS) const;
 };
 
 } // namespace dxil

llvm/include/llvm/IR/IntrinsicsDirectX.td

@@ -20,6 +20,16 @@ def int_dx_flattened_thread_id_in_group : Intrinsic<[llvm_i32_ty], [], [IntrNoMe
 def int_dx_create_handle : ClangBuiltin<"__builtin_hlsl_create_handle">,
     Intrinsic<[ llvm_ptr_ty ], [llvm_i8_ty], [IntrWillReturn]>;
 
+// Create resource handle given binding information. Returns a `target("dx.")`
+// type appropriate for the kind of resource given a register space ID, lower
+// bound and range size of the binding, as well as an index and an indicator
+// whether that index may be non-uniform.
+def int_dx_handle_fromBinding
+    : DefaultAttrsIntrinsic<
+          [llvm_any_ty],
+          [llvm_i32_ty, llvm_i32_ty, llvm_i32_ty, llvm_i32_ty, llvm_i1_ty],
+          [IntrNoMem]>;
+
 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>]>;