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
getGlobalVariable()21 GlobalVariable *FrontendResource::getGlobalVariable() {
22 return cast<GlobalVariable>(
23 cast<ConstantAsMetadata>(Entry->getOperand(0))->getValue());
24 }
25
getResourceKind()26 ResourceKind FrontendResource::getResourceKind() {
27 return static_cast<ResourceKind>(
28 cast<ConstantInt>(
29 cast<ConstantAsMetadata>(Entry->getOperand(1))->getValue())
30 ->getLimitedValue());
31 }
getElementType()32 ElementType FrontendResource::getElementType() {
33 return static_cast<ElementType>(
34 cast<ConstantInt>(
35 cast<ConstantAsMetadata>(Entry->getOperand(2))->getValue())
36 ->getLimitedValue());
37 }
getIsROV()38 bool FrontendResource::getIsROV() {
39 return cast<ConstantInt>(
40 cast<ConstantAsMetadata>(Entry->getOperand(3))->getValue())
41 ->getLimitedValue();
42 }
getResourceIndex()43 uint32_t FrontendResource::getResourceIndex() {
44 return cast<ConstantInt>(
45 cast<ConstantAsMetadata>(Entry->getOperand(4))->getValue())
46 ->getLimitedValue();
47 }
getSpace()48 uint32_t FrontendResource::getSpace() {
49 return cast<ConstantInt>(
50 cast<ConstantAsMetadata>(Entry->getOperand(5))->getValue())
51 ->getLimitedValue();
52 }
53
FrontendResource(MDNode * E)54 FrontendResource::FrontendResource(MDNode *E) : Entry(E) {
55 assert(Entry->getNumOperands() == 6 && "Unexpected metadata shape");
56 }
57
FrontendResource(GlobalVariable * GV,ResourceKind RK,ElementType ElTy,bool IsROV,uint32_t ResIndex,uint32_t Space)58 FrontendResource::FrontendResource(GlobalVariable *GV, ResourceKind RK,
59 ElementType ElTy, bool IsROV,
60 uint32_t ResIndex, uint32_t Space) {
61 auto &Ctx = GV->getContext();
62 IRBuilder<> B(Ctx);
63 Entry = MDNode::get(
64 Ctx, {ValueAsMetadata::get(GV),
65 ConstantAsMetadata::get(B.getInt32(static_cast<int>(RK))),
66 ConstantAsMetadata::get(B.getInt32(static_cast<int>(ElTy))),
67 ConstantAsMetadata::get(B.getInt1(IsROV)),
68 ConstantAsMetadata::get(B.getInt32(ResIndex)),
69 ConstantAsMetadata::get(B.getInt32(Space))});
70 }
71