/*
|
* Copyright 2017, The Android Open Source Project
|
*
|
* 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 "Context.h"
|
|
#include "llvm/ADT/Triple.h"
|
#include "llvm/IR/Module.h"
|
#include "llvm/Support/Debug.h"
|
#include "llvm/Support/raw_ostream.h"
|
|
#include <limits>
|
|
#define DEBUG_TYPE "rs2spirv-context"
|
|
namespace rs2spirv {
|
|
Context &Context::getInstance() {
|
static Context c;
|
return c;
|
}
|
|
Context::Context() : mInitialized(false) {}
|
|
bool Context::Initialize(std::unique_ptr<bcinfo::MetadataExtractor> ME) {
|
if (mInitialized) {
|
return true;
|
}
|
|
mMetadata = std::move(ME);
|
|
if (!mMetadata->extract()) {
|
llvm::errs() << "cannot extract metadata\n";
|
return false;
|
}
|
|
const char **varNames = mMetadata->getExportVarNameList();
|
size_t varCount = mMetadata->getExportVarCount();
|
mExportVarIndices.resize(varCount);
|
|
// Builds the lookup table from a variable name to its slot number
|
for (size_t slot = 0; slot < varCount; slot++) {
|
std::string varName(varNames[slot]);
|
mVarNameToSlot.insert(std::make_pair(varName, (uint32_t)slot));
|
}
|
|
const size_t kernelCount = mMetadata->getExportForEachSignatureCount();
|
const char **kernelNames = mMetadata->getExportForEachNameList();
|
for (size_t slot = 0; slot < kernelCount; slot++) {
|
mForEachNameToSlot.insert(std::make_pair(kernelNames[slot], slot));
|
}
|
|
mInitialized = true;
|
|
return true;
|
}
|
|
void Context::addExportVarIndex(const char *varName, uint32_t index) {
|
DEBUG(llvm::dbgs() << varName << " index=" << index << '\n');
|
const uint32_t slot = getSlotForExportVar(varName);
|
if (slot == std::numeric_limits<uint32_t>::max()) {
|
return;
|
}
|
addExportVarIndex(slot, index);
|
}
|
|
|
} // namespace rs2spirv
|
