1*d415bd75Srobert //===- HLSLResource.cpp - HLSL Resource helper objects --------------------===//
2*d415bd75Srobert //
3*d415bd75Srobert // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4*d415bd75Srobert // See https://llvm.org/LICENSE.txt for license information.
5*d415bd75Srobert // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6*d415bd75Srobert //
7*d415bd75Srobert //===----------------------------------------------------------------------===//
8*d415bd75Srobert ///
9*d415bd75Srobert /// \file This file contains helper objects for working with HLSL Resources.
10*d415bd75Srobert ///
11*d415bd75Srobert //===----------------------------------------------------------------------===//
12*d415bd75Srobert
13*d415bd75Srobert #include "llvm/Frontend/HLSL/HLSLResource.h"
14*d415bd75Srobert #include "llvm/IR/IRBuilder.h"
15*d415bd75Srobert #include "llvm/IR/Metadata.h"
16*d415bd75Srobert #include "llvm/IR/Module.h"
17*d415bd75Srobert
18*d415bd75Srobert using namespace llvm;
19*d415bd75Srobert using namespace llvm::hlsl;
20*d415bd75Srobert
getGlobalVariable()21*d415bd75Srobert GlobalVariable *FrontendResource::getGlobalVariable() {
22*d415bd75Srobert return cast<GlobalVariable>(
23*d415bd75Srobert cast<ConstantAsMetadata>(Entry->getOperand(0))->getValue());
24*d415bd75Srobert }
25*d415bd75Srobert
getSourceType()26*d415bd75Srobert StringRef FrontendResource::getSourceType() {
27*d415bd75Srobert return cast<MDString>(Entry->getOperand(1))->getString();
28*d415bd75Srobert }
29*d415bd75Srobert
getResourceKind()30*d415bd75Srobert uint32_t FrontendResource::FrontendResource::getResourceKind() {
31*d415bd75Srobert return cast<ConstantInt>(
32*d415bd75Srobert cast<ConstantAsMetadata>(Entry->getOperand(2))->getValue())
33*d415bd75Srobert ->getLimitedValue();
34*d415bd75Srobert }
getResourceIndex()35*d415bd75Srobert uint32_t FrontendResource::getResourceIndex() {
36*d415bd75Srobert return cast<ConstantInt>(
37*d415bd75Srobert cast<ConstantAsMetadata>(Entry->getOperand(3))->getValue())
38*d415bd75Srobert ->getLimitedValue();
39*d415bd75Srobert }
getSpace()40*d415bd75Srobert uint32_t FrontendResource::getSpace() {
41*d415bd75Srobert return cast<ConstantInt>(
42*d415bd75Srobert cast<ConstantAsMetadata>(Entry->getOperand(4))->getValue())
43*d415bd75Srobert ->getLimitedValue();
44*d415bd75Srobert }
45*d415bd75Srobert
FrontendResource(GlobalVariable * GV,StringRef TypeStr,ResourceKind RK,uint32_t ResIndex,uint32_t Space)46*d415bd75Srobert FrontendResource::FrontendResource(GlobalVariable *GV, StringRef TypeStr,
47*d415bd75Srobert ResourceKind RK, uint32_t ResIndex,
48*d415bd75Srobert uint32_t Space) {
49*d415bd75Srobert auto &Ctx = GV->getContext();
50*d415bd75Srobert IRBuilder<> B(Ctx);
51*d415bd75Srobert Entry = MDNode::get(
52*d415bd75Srobert Ctx, {ValueAsMetadata::get(GV), MDString::get(Ctx, TypeStr),
53*d415bd75Srobert ConstantAsMetadata::get(B.getInt32(static_cast<int>(RK))),
54*d415bd75Srobert ConstantAsMetadata::get(B.getInt32(ResIndex)),
55*d415bd75Srobert ConstantAsMetadata::get(B.getInt32(Space))});
56*d415bd75Srobert }
57