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// Copyright (c) 2017 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "source/opt/feature_manager.h"
#include <queue>
#include <stack>
#include <string>
#include "source/enum_string_mapping.h"
namespace spvtools {
namespace opt {
void FeatureManager::Analyze(Module* module) {
AddExtensions(module);
AddCapabilities(module);
AddExtInstImportIds(module);
}
void FeatureManager::AddExtensions(Module* module) {
for (auto ext : module->extensions()) {
AddExtension(&ext);
}
}
void FeatureManager::AddExtension(Instruction* ext) {
assert(ext->opcode() == SpvOpExtension &&
"Expecting an extension instruction.");
const std::string name = ext->GetInOperand(0u).AsString();
Extension extension;
if (GetExtensionFromString(name.c_str(), &extension)) {
extensions_.Add(extension);
}
}
void FeatureManager::RemoveExtension(Extension ext) {
if (!extensions_.Contains(ext)) return;
extensions_.Remove(ext);
}
void FeatureManager::AddCapability(SpvCapability cap) {
if (capabilities_.Contains(cap)) return;
capabilities_.Add(cap);
spv_operand_desc desc = {};
if (SPV_SUCCESS ==
grammar_.lookupOperand(SPV_OPERAND_TYPE_CAPABILITY, cap, &desc)) {
CapabilitySet(desc->numCapabilities, desc->capabilities)
.ForEach([this](SpvCapability c) { AddCapability(c); });
}
}
void FeatureManager::RemoveCapability(SpvCapability cap) {
if (!capabilities_.Contains(cap)) return;
capabilities_.Remove(cap);
}
void FeatureManager::AddCapabilities(Module* module) {
for (Instruction& inst : module->capabilities()) {
AddCapability(static_cast<SpvCapability>(inst.GetSingleWordInOperand(0)));
}
}
void FeatureManager::AddExtInstImportIds(Module* module) {
extinst_importid_GLSLstd450_ = module->GetExtInstImportId("GLSL.std.450");
extinst_importid_OpenCL100DebugInfo_ =
module->GetExtInstImportId("OpenCL.DebugInfo.100");
extinst_importid_Shader100DebugInfo_ =
module->GetExtInstImportId("NonSemantic.Shader.DebugInfo.100");
}
bool operator==(const FeatureManager& a, const FeatureManager& b) {
// We check that the addresses of the grammars are the same because they
// are large objects, and this is faster. It can be changed if needed as a
// later time.
if (&a.grammar_ != &b.grammar_) {
return false;
}
if (a.capabilities_ != b.capabilities_) {
return false;
}
if (a.extensions_ != b.extensions_) {
return false;
}
if (a.extinst_importid_GLSLstd450_ != b.extinst_importid_GLSLstd450_) {
return false;
}
if (a.extinst_importid_OpenCL100DebugInfo_ !=
b.extinst_importid_OpenCL100DebugInfo_) {
return false;
}
if (a.extinst_importid_Shader100DebugInfo_ !=
b.extinst_importid_Shader100DebugInfo_) {
return false;
}
return true;
}
} // namespace opt
} // namespace spvtools
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