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//===- HLSLRootSignature.cpp - HLSL Root Signature helpers ----------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file This file contains helpers for working with HLSL Root Signatures.
///
//===----------------------------------------------------------------------===//
#include "llvm/Frontend/HLSL/HLSLRootSignature.h"
#include "llvm/Support/ScopedPrinter.h"
namespace llvm {
namespace hlsl {
namespace rootsig {
template <typename T>
static raw_ostream &printFlags(raw_ostream &OS, const T Value,
ArrayRef<EnumEntry<T>> Flags) {
bool FlagSet = false;
unsigned Remaining = llvm::to_underlying(Value);
while (Remaining) {
unsigned Bit = 1u << llvm::countr_zero(Remaining);
if (Remaining & Bit) {
if (FlagSet)
OS << " | ";
StringRef MaybeFlag = enumToStringRef(T(Bit), Flags);
if (!MaybeFlag.empty())
OS << MaybeFlag;
else
OS << "invalid: " << Bit;
FlagSet = true;
}
Remaining &= ~Bit;
}
if (!FlagSet)
OS << "None";
return OS;
}
static const EnumEntry<RegisterType> RegisterNames[] = {
{"b", RegisterType::BReg},
{"t", RegisterType::TReg},
{"u", RegisterType::UReg},
{"s", RegisterType::SReg},
};
static raw_ostream &operator<<(raw_ostream &OS, const Register &Reg) {
OS << enumToStringRef(Reg.ViewType, ArrayRef(RegisterNames)) << Reg.Number;
return OS;
}
static raw_ostream &operator<<(raw_ostream &OS,
const llvm::dxbc::ShaderVisibility &Visibility) {
OS << enumToStringRef(Visibility, dxbc::getShaderVisibility());
return OS;
}
static raw_ostream &operator<<(raw_ostream &OS,
const llvm::dxbc::SamplerFilter &Filter) {
OS << enumToStringRef(Filter, dxbc::getSamplerFilters());
return OS;
}
static raw_ostream &operator<<(raw_ostream &OS,
const dxbc::TextureAddressMode &Address) {
OS << enumToStringRef(Address, dxbc::getTextureAddressModes());
return OS;
}
static raw_ostream &operator<<(raw_ostream &OS,
const dxbc::ComparisonFunc &CompFunc) {
OS << enumToStringRef(CompFunc, dxbc::getComparisonFuncs());
return OS;
}
static raw_ostream &operator<<(raw_ostream &OS,
const dxbc::StaticBorderColor &BorderColor) {
OS << enumToStringRef(BorderColor, dxbc::getStaticBorderColors());
return OS;
}
static const EnumEntry<dxil::ResourceClass> ResourceClassNames[] = {
{"CBV", dxil::ResourceClass::CBuffer},
{"SRV", dxil::ResourceClass::SRV},
{"UAV", dxil::ResourceClass::UAV},
{"Sampler", dxil::ResourceClass::Sampler},
};
static raw_ostream &operator<<(raw_ostream &OS, const ClauseType &Type) {
OS << enumToStringRef(dxil::ResourceClass(llvm::to_underlying(Type)),
ArrayRef(ResourceClassNames));
return OS;
}
static raw_ostream &operator<<(raw_ostream &OS,
const dxbc::RootDescriptorFlags &Flags) {
printFlags(OS, Flags, dxbc::getRootDescriptorFlags());
return OS;
}
static raw_ostream &operator<<(raw_ostream &OS,
const llvm::dxbc::DescriptorRangeFlags &Flags) {
printFlags(OS, Flags, dxbc::getDescriptorRangeFlags());
return OS;
}
raw_ostream &operator<<(raw_ostream &OS, const dxbc::RootFlags &Flags) {
OS << "RootFlags(";
printFlags(OS, Flags, dxbc::getRootFlags());
OS << ")";
return OS;
}
raw_ostream &operator<<(raw_ostream &OS, const RootConstants &Constants) {
OS << "RootConstants(num32BitConstants = " << Constants.Num32BitConstants
<< ", " << Constants.Reg << ", space = " << Constants.Space
<< ", visibility = " << Constants.Visibility << ")";
return OS;
}
raw_ostream &operator<<(raw_ostream &OS, const DescriptorTable &Table) {
OS << "DescriptorTable(numClauses = " << Table.NumClauses
<< ", visibility = " << Table.Visibility << ")";
return OS;
}
raw_ostream &operator<<(raw_ostream &OS, const DescriptorTableClause &Clause) {
OS << Clause.Type << "(" << Clause.Reg << ", numDescriptors = ";
if (Clause.NumDescriptors == NumDescriptorsUnbounded)
OS << "unbounded";
else
OS << Clause.NumDescriptors;
OS << ", space = " << Clause.Space << ", offset = ";
if (Clause.Offset == DescriptorTableOffsetAppend)
OS << "DescriptorTableOffsetAppend";
else
OS << Clause.Offset;
OS << ", flags = " << Clause.Flags << ")";
return OS;
}
raw_ostream &operator<<(raw_ostream &OS, const RootDescriptor &Descriptor) {
ClauseType Type = ClauseType(llvm::to_underlying(Descriptor.Type));
OS << "Root" << Type << "(" << Descriptor.Reg
<< ", space = " << Descriptor.Space
<< ", visibility = " << Descriptor.Visibility
<< ", flags = " << Descriptor.Flags << ")";
return OS;
}
raw_ostream &operator<<(raw_ostream &OS, const StaticSampler &Sampler) {
OS << "StaticSampler(" << Sampler.Reg << ", filter = " << Sampler.Filter
<< ", addressU = " << Sampler.AddressU
<< ", addressV = " << Sampler.AddressV
<< ", addressW = " << Sampler.AddressW
<< ", mipLODBias = " << Sampler.MipLODBias
<< ", maxAnisotropy = " << Sampler.MaxAnisotropy
<< ", comparisonFunc = " << Sampler.CompFunc
<< ", borderColor = " << Sampler.BorderColor
<< ", minLOD = " << Sampler.MinLOD << ", maxLOD = " << Sampler.MaxLOD
<< ", space = " << Sampler.Space << ", visibility = " << Sampler.Visibility
<< ")";
return OS;
}
namespace {
// We use the OverloadVisit with std::visit to ensure the compiler catches if a
// new RootElement variant type is added but it's operator<< isn't handled.
template <class... Ts> struct OverloadedVisit : Ts... {
using Ts::operator()...;
};
template <class... Ts> OverloadedVisit(Ts...) -> OverloadedVisit<Ts...>;
} // namespace
raw_ostream &operator<<(raw_ostream &OS, const RootElement &Element) {
const auto Visitor = OverloadedVisit{
[&OS](const dxbc::RootFlags &Flags) { OS << Flags; },
[&OS](const RootConstants &Constants) { OS << Constants; },
[&OS](const RootDescriptor &Descriptor) { OS << Descriptor; },
[&OS](const DescriptorTableClause &Clause) { OS << Clause; },
[&OS](const DescriptorTable &Table) { OS << Table; },
[&OS](const StaticSampler &Sampler) { OS << Sampler; },
};
std::visit(Visitor, Element);
return OS;
}
void dumpRootElements(raw_ostream &OS, ArrayRef<RootElement> Elements) {
OS << " RootElements{";
bool First = true;
for (const RootElement &Element : Elements) {
if (!First)
OS << ",";
OS << " " << Element;
First = false;
}
OS << "}";
}
} // namespace rootsig
} // namespace hlsl
} // namespace llvm
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