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|
/************************************************************************
************************************************************************
FAUST compiler
Copyright (C) 2003-2018 GRAME, Centre National de Creation Musicale
---------------------------------------------------------------------
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
************************************************************************
************************************************************************/
#include "wss_code_container.hh"
#include "fir_to_fir.hh"
#include "global.hh"
using namespace std;
#define WORK_STEALING_INDEX 0
#define LAST_TASK_INDEX 1
#define START_TASK_INDEX LAST_TASK_INDEX + 1
#define START_TASK_MAX 2
void WSSCodeContainer::moveCompute2ComputeThread()
{
// Move stack variables from "compute" to "computeThread"
struct Compute2ComputeThread : public DispatchVisitor {
WSSCodeContainer* fContainer;
vector<string> fVariables;
bool containVar(const string& name)
{
for (const auto& it : fVariables) {
if (name.find(it) != string::npos) {
return true;
}
}
return false;
}
void visit(DeclareVarInst* inst)
{
BasicCloneVisitor cloner;
if (inst->fAddress->isStack() && containVar(inst->getName())) {
// For local thread access (in computeThread)
fContainer->pushComputeThread(inst->clone(&cloner));
// Mark inst to be removed
inst->fAddress->setAccess(Address::kLink);
}
// Then dispatch and possibly rewrite 'value' access
DispatchVisitor::visit(inst);
}
Compute2ComputeThread(WSSCodeContainer* container, vector<string> variables)
: fContainer(container), fVariables(variables)
{
}
};
// Transform stack variables in struct variables
VariableMover::Move(this, "Rec");
VariableMover::Move(this, "tmp");
VariableMover::Move(this, "Zec");
VariableMover::Move(this, "Yec");
// To move variables in "computeThread"
Compute2ComputeThread mover(this, {"fSoundfile", "Then", "Else", "Slow", "Vec", "fInput",
"fOutput", "pfPerm", "pfTemp"});
fComputeBlockInstructions->accept(&mover);
// Remove marked variables from fComputeBlockInstructions
RemoverCloneVisitor remover;
fComputeBlockInstructions = static_cast<BlockInst*>(fComputeBlockInstructions->clone(&remover));
}
void WSSCodeContainer::generateDAGLoopWSSAux1(lclgraph dag, BlockInst* gen_code, int cur_thread)
{
// Last stage connected to end task
if (dag[0].size() > 1) {
Values fun_args;
fun_args.push_back(IB::genLoadStructVar("fScheduler"));
fun_args.push_back(IB::genInt32NumInst(LAST_TASK_INDEX));
fun_args.push_back(IB::genInt32NumInst(int(dag[0].size())));
gen_code->pushBackInst(
IB::genLabelInst("/* Initialize end task, if more than one input */"));
gen_code->pushBackInst(IB::genVoidFunCallInst("initTask", fun_args));
} else {
gen_code->pushBackInst(
IB::genLabelInst("/* End task has only one input, so will be directly activated */"));
}
// Compute init section
gen_code->pushBackInst(
IB::genLabelInst("/* Only initialize tasks with more than one input */"));
for (int l = int(dag.size()) - 1; l >= 0; l--) {
for (const auto& p : dag[l]) {
if (p->getBackwardLoopDependencies().size() >
1) { // Only initialize tasks with more than 1 input,
// since tasks with one input are "directly"
// activated.
Values fun_args;
fun_args.push_back(IB::genLoadStructVar("fScheduler"));
fun_args.push_back(IB::genInt32NumInst(p->getIndex()));
fun_args.push_back(
IB::genInt32NumInst(int(p->getBackwardLoopDependencies().size())));
gen_code->pushBackInst(IB::genVoidFunCallInst("initTask", fun_args));
}
}
}
Values fun_args1;
fun_args1.push_back(IB::genLoadStructVar("fScheduler"));
if (cur_thread == -1) {
// Push ready tasks in each thread WSQ
gen_code->pushBackInst(IB::genLabelInst("/* Push ready tasks in each thread WSQ */"));
fun_args1.push_back(IB::genInt32NumInst(cur_thread));
} else {
// Push ready tasks in 'num_thread' WSQ
gen_code->pushBackInst(IB::genLabelInst("/* Push ready tasks in 'num_thread' WSQ */"));
fun_args1.push_back(IB::genLoadFunArgsVar("num_thread"));
}
gen_code->pushBackInst(IB::genVoidFunCallInst("initTaskList", fun_args1));
}
void WSSCodeContainer::generateDAGLoopWSSAux2(lclgraph dag, const string& counter)
{
string index = "fIndex";
BlockInst* loop_code = fComputeBlockInstructions;
loop_code->pushBackInst(IB::genStoreStructVar(fFFullCount, IB::genLoadFunArgsVar(counter)));
loop_code->pushBackInst(IB::genVolatileStoreStructVar(index, IB::genInt32NumInst(0)));
generateDAGLoopWSSAux1(dag, loop_code, -1); // -1 means dispath ready tasks on all WSQ
Values fun_args1;
fun_args1.push_back(IB::genLoadStructVar("fScheduler"));
loop_code->pushBackInst(IB::genVoidFunCallInst("signalAll", fun_args1));
Values fun_args2;
if (fObjName != "this") {
fun_args2.push_back(IB::genLoadFunArgsVar(fObjName));
}
fun_args2.push_back(IB::genInt32NumInst(0));
loop_code->pushBackInst(IB::genVoidFunCallInst("computeThread" + fKlassName, fun_args2));
loop_code->pushBackInst(IB::genVoidFunCallInst("syncAll", fun_args1));
}
void WSSCodeContainer::generateDAGLoopWSSAux3(int loop_count, const vector<int>& ready_loop)
{
string index = "fIndex";
// Needed in the struct
pushDeclare(IB::genDecVolatileStructVar(index, IB::genInt32Typed()));
pushDeclare(IB::genDecStructVar(fFFullCount, IB::genInt32Typed()));
pushDeclare(IB::genDecStructVar("fScheduler", IB::genBasicTyped(Typed::kVoid_ptr)));
// Scheduler prototypes declaration
pushGlobalDeclare(IB::genLabelInst("#ifdef __cplusplus"));
pushGlobalDeclare(IB::genLabelInst("extern \"C\""));
pushGlobalDeclare(IB::genLabelInst("{"));
pushGlobalDeclare(IB::genLabelInst("#endif"));
pushGlobalDeclare(IB::genFunction2("createScheduler", Typed::kVoid_ptr, "task_queue_size",
Typed::kInt32, "init_task_list_size", Typed::kInt32));
pushGlobalDeclare(
IB::genFunction1("deleteScheduler", Typed::kVoid, "scheduler", Typed::kVoid_ptr));
pushGlobalDeclare(IB::genFunction2("startAll", Typed::kVoid, "scheduler", Typed::kVoid_ptr,
"dsp", Typed::kVoid_ptr));
pushGlobalDeclare(IB::genFunction1("stopAll", Typed::kVoid, "scheduler", Typed::kVoid_ptr));
pushGlobalDeclare(IB::genFunction1("initAll", Typed::kVoid, "scheduler", Typed::kVoid_ptr));
pushGlobalDeclare(IB::genFunction1("signalAll", Typed::kVoid, "scheduler", Typed::kVoid_ptr));
pushGlobalDeclare(IB::genFunction1("syncAll", Typed::kVoid, "scheduler", Typed::kVoid_ptr));
pushGlobalDeclare(IB::genFunction3("pushHead", Typed::kVoid, "scheduler", Typed::kVoid_ptr,
"cur_thread", Typed::kInt32, "task", Typed::kInt32));
pushGlobalDeclare(IB::genFunction2("getNextTask", Typed::kInt32, "scheduler", Typed::kVoid_ptr,
"cur_thread", Typed::kInt32));
pushGlobalDeclare(IB::genFunction3("initTask", Typed::kVoid, "scheduler", Typed::kVoid_ptr,
"task_num", Typed::kInt32, "count", Typed::kInt32));
pushGlobalDeclare(IB::genFunction4("activateOutputTask1", Typed::kVoid, "scheduler",
Typed::kVoid_ptr, "cur_thread", Typed::kInt32, "task",
Typed::kInt32, "task_num", Typed::kInt32_ptr));
pushGlobalDeclare(IB::genFunction3("activateOutputTask2", Typed::kVoid, "scheduler",
Typed::kVoid_ptr, "cur_thread", Typed::kInt32, "task",
Typed::kInt32));
pushGlobalDeclare(IB::genFunction4("activateOneOutputTask", Typed::kVoid, "scheduler",
Typed::kVoid_ptr, "cur_thread", Typed::kInt32, "task",
Typed::kInt32, "task_num", Typed::kInt32_ptr));
pushGlobalDeclare(IB::genFunction3("getReadyTask", Typed::kVoid, "scheduler", Typed::kVoid_ptr,
"cur_thread", Typed::kInt32, "task_num", Typed::kInt32_ptr));
pushGlobalDeclare(IB::genFunction2("initTaskList", Typed::kVoid, "scheduler", Typed::kVoid_ptr,
"cur_thread", Typed::kInt32));
pushGlobalDeclare(IB::genFunction2("addReadyTask", Typed::kVoid, "scheduler", Typed::kVoid_ptr,
"task_num", Typed::kInt32));
pushGlobalDeclare(IB::genLabelInst("#ifdef __cplusplus"));
pushGlobalDeclare(IB::genLabelInst("}"));
pushGlobalDeclare(IB::genLabelInst("#endif"));
// Specific allocate instructions
Values fun_args;
fun_args.push_back(IB::genInt32NumInst(loop_count));
fun_args.push_back(IB::genInt32NumInst(int(ready_loop.size())));
pushAllocateMethod(
IB::genStoreStructVar("fScheduler", IB::genFunCallInst("createScheduler", fun_args)));
for (size_t i = 0; i < ready_loop.size(); i++) {
Values fun_args1;
fun_args1.push_back(IB::genLoadStructVar("fScheduler"));
fun_args1.push_back(IB::genInt32NumInst(ready_loop[i]));
pushAllocateMethod(IB::genVoidFunCallInst("addReadyTask", fun_args1));
}
Values fun_args2;
fun_args2.push_back(IB::genLoadStructVar("fScheduler"));
fun_args2.push_back(IB::genLoadFunArgsVar(fObjName));
pushAllocateMethod(IB::genVoidFunCallInst("startAll", fun_args2));
// Specific destroy instructions
Values fun_args4;
fun_args4.push_back(IB::genLoadStructVar("fScheduler"));
pushDestroyMethod(IB::genVoidFunCallInst("deleteScheduler", fun_args4));
}
void WSSCodeContainer::generateLocalInputs(BlockInst* loop_code, const string& index_string)
{
// Generates line like: FAUSTFLOAT* fInput0 = &fInput0_ptr[index];
Typed* type = IB::genArrayTyped(IB::genFloatMacroTyped(), 0);
for (int index = 0; index < inputs(); index++) {
string name1 = subst("input$0", T(index));
string name2 = subst("fInput$0_ptr", T(index));
loop_code->pushBackInst(IB::genDecStackVar(
name1, type,
IB::genLoadArrayStructVarAddress(name2, IB::genVolatileLoadStructVar(index_string))));
}
}
void WSSCodeContainer::generateLocalOutputs(BlockInst* loop_code, const string& index_string)
{
// Generates line like: FAUSTFLOAT* fOutput0 = &fOutput0_ptr[index];
Typed* type = IB::genArrayTyped(IB::genFloatMacroTyped(), 0);
for (int index = 0; index < outputs(); index++) {
string name1 = subst("output$0", T(index));
string name2 = subst("fOutput$0_ptr", T(index));
loop_code->pushBackInst(IB::genDecStackVar(
name1, type,
IB::genLoadArrayStructVarAddress(name2, IB::genVolatileLoadStructVar(index_string))));
}
}
BlockInst* WSSCodeContainer::generateDAGLoopWSS(lclgraph dag)
{
string index = "fIndex";
BlockInst* loop_code = fComputeThreadBlockInstructions;
loop_code->pushBackInst(IB::genDecStackVar("tasknum", IB::genInt32Typed(),
IB::genInt32NumInst(WORK_STEALING_INDEX)));
DeclareVarInst* count_dec = IB::genDecStackVar("vsize", IB::genInt32Typed());
ValueInst* switch_cond = IB::genLoadStackVar("tasknum");
::SwitchInst* switch_block = IB::genSwitchInst(switch_cond);
// Work stealing task
BlockInst* ws_block = IB::genBlockInst();
ws_block->pushBackInst(IB::genLabelInst("/* Work Stealing task */"));
Values fun_args2;
fun_args2.push_back(IB::genLoadStructVar("fScheduler"));
fun_args2.push_back(IB::genLoadFunArgsVar("num_thread"));
ws_block->pushBackInst(
IB::genStoreStackVar("tasknum", IB::genFunCallInst("getNextTask", fun_args2)));
switch_block->addCase(WORK_STEALING_INDEX, ws_block);
// Last task
BlockInst* last_block = IB::genBlockInst();
last_block->pushBackInst(IB::genLabelInst("/* Last task */"));
last_block->pushBackInst(IB::genVolatileStoreStructVar(
index, IB::genAdd(IB::genVolatileLoadStructVar(index), gGlobal->gVecSize)));
ValueInst* if_cond =
IB::genLessThan(IB::genVolatileLoadStructVar(index), IB::genLoadStructVar(fFFullCount));
BlockInst* then_block = IB::genBlockInst();
BlockInst* else_block = IB::genBlockInst();
else_block->pushBackInst(IB::genRetInst());
// Generates init DAG and ready tasks activations
generateDAGLoopWSSAux1(dag, then_block);
// last_block->pushBackInst(IB::genIfInst(if_cond, then_block, else_block));
last_block->pushBackInst(IB::genIfInst(if_cond, then_block));
// Generates tasknum
last_block->pushBackInst(IB::genStoreStackVar("tasknum", IB::genInt32NumInst(0)));
// Push if block as last_task
switch_block->addCase(LAST_TASK_INDEX, last_block);
// Generates global "switch/case"
int loop_num = START_TASK_MAX; // First index to be used for remaining tasks
ValueInst* while_cond =
IB::genLessThan(IB::genVolatileLoadStructVar(index), IB::genLoadStructVar(fFFullCount));
BlockInst* switch_block_code = IB::genBlockInst();
// Generates switch/case block "header"
ValueInst* init1 = IB::genLoadStructVar(fFFullCount);
ValueInst* init2 = IB::genSub(init1, IB::genVolatileLoadStructVar(index));
Values min_fun_args;
min_fun_args.push_back(IB::genInt32NumInst(gGlobal->gVecSize));
min_fun_args.push_back(init2);
ValueInst* init3 = IB::genFunCallInst("min_i", min_fun_args);
DeclareVarInst* count_store = IB::genDecStackVar("vsize", IB::genInt32Typed(), init3);
// Generate input/output access
generateLocalInputs(switch_block_code, index);
generateLocalOutputs(switch_block_code, index);
switch_block_code->pushBackInst(count_store);
for (int l = int(dag.size()) - 1; l > 0; l--) {
for (lclset::const_iterator p = dag[l].begin(); p != dag[l].end(); p++, loop_num++) {
// Generates a "case" block for each task
BlockInst* case_block = IB::genBlockInst();
generateDAGLoopAux(*p, case_block, count_dec->load(), loop_num);
// Add output tasks activation code
// One output only
if ((*p)->getForwardLoopDependencies().size() == 1) {
case_block->pushBackInst(IB::genLabelInst("/* One output only */"));
lclset::const_iterator p1 = (*p)->getForwardLoopDependencies().begin();
if ((*p1)->getBackwardLoopDependencies().size() == 1) {
case_block->pushBackInst(
IB::genStoreStackVar("tasknum", IB::genInt32NumInst((*p1)->getIndex())));
} else {
Values fun_args;
fun_args.push_back(IB::genLoadStructVar("fScheduler"));
fun_args.push_back(IB::genLoadFunArgsVar("num_thread"));
fun_args.push_back(IB::genInt32NumInst((*p1)->getIndex()));
fun_args.push_back(IB::genLoadStackVarAddress("tasknum"));
case_block->pushBackInst(
IB::genVoidFunCallInst("activateOneOutputTask", fun_args));
}
} else {
CodeLoop* keep = nullptr;
// Find one output with only one backward dependencies
for (const auto& p1 : (*p)->getForwardLoopDependencies()) {
if (p1->getBackwardLoopDependencies().size() == 1) {
keep = p1;
break;
}
}
if (keep == nullptr) {
case_block->pushBackInst(
IB::genStoreStackVar("tasknum", IB::genInt32NumInst(WORK_STEALING_INDEX)));
}
for (const auto& p1 : (*p)->getForwardLoopDependencies()) {
if (p1->getBackwardLoopDependencies().size() == 1) { // Task is the only input
if (p1 != keep) {
Values fun_args;
fun_args.push_back(IB::genLoadStructVar("fScheduler"));
fun_args.push_back(IB::genLoadFunArgsVar("num_thread"));
fun_args.push_back(IB::genInt32NumInst(p1->getIndex()));
case_block->pushBackInst(IB::genVoidFunCallInst("pushHead", fun_args));
}
} else {
if (keep == nullptr) {
Values fun_args;
fun_args.push_back(IB::genLoadStructVar("fScheduler"));
fun_args.push_back(IB::genLoadFunArgsVar("num_thread"));
fun_args.push_back(IB::genInt32NumInst(p1->getIndex()));
fun_args.push_back(IB::genLoadStackVarAddress("tasknum"));
case_block->pushBackInst(
IB::genVoidFunCallInst("activateOutputTask1", fun_args));
} else {
Values fun_args;
fun_args.push_back(IB::genLoadStructVar("fScheduler"));
fun_args.push_back(IB::genLoadFunArgsVar("num_thread"));
fun_args.push_back(IB::genInt32NumInst(p1->getIndex()));
case_block->pushBackInst(
IB::genVoidFunCallInst("activateOutputTask2", fun_args));
}
}
}
if (keep != nullptr) {
case_block->pushBackInst(
IB::genStoreStackVar("tasknum", IB::genInt32NumInst(keep->getIndex())));
} else {
Values fun_args;
fun_args.push_back(IB::genLoadStructVar("fScheduler"));
fun_args.push_back(IB::genLoadFunArgsVar("num_thread"));
fun_args.push_back(IB::genLoadStackVarAddress("tasknum"));
case_block->pushBackInst(IB::genVoidFunCallInst("getReadyTask", fun_args));
}
}
// Add the "case" block
switch_block->addCase(loop_num, case_block);
}
}
// Last stage
lclset level = dag[0];
if (level.size() == 1) {
BlockInst* case_block = IB::genBlockInst();
generateDAGLoopAux(*level.begin(), case_block, count_dec->load(), loop_num);
case_block->pushBackInst(
IB::genStoreStackVar("tasknum", IB::genInt32NumInst(LAST_TASK_INDEX)));
// Add the "case" block
switch_block->addCase(loop_num, case_block);
} else {
for (lclset::const_iterator p = level.begin(); p != level.end(); p++, loop_num++) {
BlockInst* case_block = IB::genBlockInst();
generateDAGLoopAux(*p, case_block, count_dec->load(), loop_num);
Values fun_args;
fun_args.push_back(IB::genLoadStructVar("fScheduler"));
fun_args.push_back(IB::genLoadFunArgsVar("num_thread"));
fun_args.push_back(IB::genInt32NumInst(LAST_TASK_INDEX));
fun_args.push_back(IB::genLoadStackVarAddress("tasknum"));
case_block->pushBackInst(IB::genVoidFunCallInst("activateOneOutputTask", fun_args));
// Add the "case" block
switch_block->addCase(loop_num, case_block);
}
}
// Finishes switch block
switch_block_code->pushBackInst(switch_block);
WhileLoopInst* while_block = IB::genWhileLoopInst(while_cond, switch_block_code);
// Add the "while" block
loop_code->pushBackInst(while_block);
return loop_code;
}
void WSSCodeContainer::processFIR(void)
{
// Default FIR to FIR transformations
CodeContainer::processFIR();
// Transform some stack variables in struct variables, move some variables from "compute" to
// "computeThread"
moveCompute2ComputeThread();
lclgraph dag;
vector<int> ready_loop;
int loop_count;
CodeLoop::sortGraph(fCurLoop, dag);
computeForwardDAG(dag, loop_count, ready_loop);
generateDAGLoopWSSAux3(loop_count, ready_loop);
// Prepare global loop
fThreadLoopBlock = generateDAGLoopWSS(dag);
generateDAGLoopWSSAux2(dag, fFullCount);
if (gGlobal->gRemoveVarAddress) {
VarAddressRemover remover;
fComputeBlockInstructions = remover.getCode(fComputeBlockInstructions);
fThreadLoopBlock = remover.getCode(fThreadLoopBlock);
fComputeThreadBlockInstructions = remover.getCode(fComputeThreadBlockInstructions);
}
// Sort arrays to be at the begining
// fComputeBlockInstructions->fCode.sort(sortArrayDeclarations);
/*
// Verify code
CodeVerifier verifier;
BlockInst global_block;
// Declaration part
global_block.merge(fExtGlobalDeclarationInstructions);
global_block.merge(fGlobalDeclarationInstructions);
global_block.merge(fDeclarationInstructions);
// Init method
global_block.merge(fInitInstructions);
global_block.merge(fPostInitInstructions);
global_block.merge(fStaticInitInstructions);
global_block.merge(fPostStaticInitInstructions);
// Compute method
global_block.merge(fComputeBlockInstructions);
global_block.pushBackInst(fDAGBlock);
global_block.accept(&verifier);
*/
}
DeclareFunInst* WSSCodeContainer::generateComputeThread(const string& name, const string& obj,
bool ismethod, bool isvirtual)
{
Names args;
if (!ismethod) {
args.push_back(IB::genNamedTyped(obj, Typed::kObj_ptr));
}
args.push_back(IB::genNamedTyped("num_thread", Typed::kInt32));
BlockInst* block = IB::genBlockInst();
block->pushBackInst(fThreadLoopBlock);
// Explicit return
block->pushBackInst(IB::genRetInst());
// Creates function
return IB::genVoidFunction(name, args, block, isvirtual);
}
DeclareFunInst* WSSCodeContainer::generateComputeThreadExternal(const string& name,
const string& obj)
{
Names args;
args.push_back(IB::genNamedTyped(obj, Typed::kVoid_ptr));
args.push_back(IB::genNamedTyped("num_thread", Typed::kInt32));
BlockInst* block = IB::genBlockInst();
{
Values args1;
args1.push_back(
IB::genCastInst(IB::genLoadFunArgsVar(obj), IB::genBasicTyped(Typed::kObj_ptr)));
args1.push_back(IB::genLoadFunArgsVar("num_thread"));
block->pushBackInst(IB::genVoidFunCallInst("computeThread" + fKlassName, args1));
}
// Explicit return
block->pushBackInst(IB::genRetInst());
// Creates function
return IB::genVoidFunction(name, args, block, false);
}
BlockInst* WSSCodeContainer::flattenFIR(void)
{
BlockInst* global_block = CodeContainer::flattenFIR();
global_block->pushBackInst(IB::genLabelInst("========== Compute DSP Thread =========="));
global_block->pushBackInst(fThreadLoopBlock);
return global_block;
}
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