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// LLVM module pass that setups inline attributes so ALL called functions
// will be inlined into the kernel.
//
// Copyright (c) 2011 Universidad Rey Juan Carlos
// 2012-2015 Pekka Jääskeläinen
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#include "CompilerWarnings.h"
IGNORE_COMPILER_WARNING("-Wmaybe-uninitialized")
#include <llvm/ADT/Twine.h>
POP_COMPILER_DIAGS
IGNORE_COMPILER_WARNING("-Wunused-parameter")
#include "llvm/Support/CommandLine.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/Pass.h"
#include "llvm/IR/Module.h"
#include "Flatten.hh"
#include "LLVMUtils.h"
#include "Workgroup.h"
#include "WorkitemHandlerChooser.h"
POP_COMPILER_DIAGS
#include <iostream>
#include <set>
#include <string>
#include "pocl_llvm_api.h"
//#define DEBUG_FLATTEN
#define PASS_NAME "flatten-inline-all"
#define PASS_CLASS pocl::FlattenAll
#define PASS_DESC "Kernel function flattening pass - flatten everything"
namespace pocl {
using namespace llvm;
static bool flattenAll(Module &M) {
bool changed = false;
std::string DevAuxFunctionsList;
bool FoundMetadata =
getModuleStringMetadata(M, "device_aux_functions", DevAuxFunctionsList);
std::set<std::string> AuxFuncs;
if (FoundMetadata && DevAuxFunctionsList.size() > 0) {
size_t pos = 0;
std::string token;
while ((pos = DevAuxFunctionsList.find(";")) != std::string::npos) {
token = DevAuxFunctionsList.substr(0, pos);
AuxFuncs.insert(token);
DevAuxFunctionsList.erase(0, pos + 1);
}
}
for (llvm::Module::iterator i = M.begin(), e = M.end(); i != e; ++i) {
llvm::Function *f = &*i;
if (f->isDeclaration() || f->getName().startswith("__pocl_print") ||
AuxFuncs.find(f->getName().str()) != AuxFuncs.end())
continue;
AttributeSet Attrs;
changed = true;
decltype(Attribute::AlwaysInline) replaceThisAttr, replacementAttr;
decltype(llvm::GlobalValue::ExternalLinkage) linkage;
if (pocl::isKernelToProcess(*f)) {
replaceThisAttr = Attribute::AlwaysInline;
replacementAttr = Attribute::NoInline;
linkage = llvm::GlobalValue::ExternalLinkage;
#ifdef DEBUG_FLATTEN
std::cerr << "### NoInline for " << f->getName().str() << std::endl;
#endif
} else {
replaceThisAttr = Attribute::NoInline;
replacementAttr = Attribute::AlwaysInline;
linkage = llvm::GlobalValue::InternalLinkage;
#ifdef DEBUG_FLATTEN
std::cerr << "### AlwaysInline for " << f->getName().str() << std::endl;
#endif
}
f->setAttributes(f->getAttributes()
.removeFnAttribute(M.getContext(), replaceThisAttr)
.addFnAttribute(f->getContext(), replacementAttr));
f->setLinkage(linkage);
}
return changed;
}
#if LLVM_MAJOR < MIN_LLVM_NEW_PASSMANAGER
char FlattenAll::ID = 0;
bool FlattenAll::runOnModule(Module &M) { return flattenAll(M); }
void FlattenAll::getAnalysisUsage(llvm::AnalysisUsage &AU) const {
AU.addPreserved<WorkitemHandlerChooser>();
}
REGISTER_OLD_MPASS(PASS_NAME, PASS_CLASS, PASS_DESC);
#else
llvm::PreservedAnalyses FlattenAll::run(llvm::Module &M,
llvm::ModuleAnalysisManager &AM) {
PreservedAnalyses PAChanged = PreservedAnalyses::none();
PAChanged.preserve<WorkitemHandlerChooser>();
return flattenAll(M) ? PAChanged : PreservedAnalyses::all();
}
REGISTER_NEW_MPASS(PASS_NAME, PASS_CLASS, PASS_DESC);
#endif
} // namespace pocl
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