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