Revision 979b56e580f4773e93d96f7ae85a74c79b88ea33 authored by Steven Johnson on 06 February 2018, 23:01:45 UTC, committed by Steven Johnson on 06 February 2018, 23:01:45 UTC
IRPrinter.cpp
#include <iostream>
#include <sstream>
#include "IRPrinter.h"
#include "IROperator.h"
#include "Module.h"
#include "AssociativeOpsTable.h"
#include "Associativity.h"
namespace Halide {
using std::ostream;
using std::vector;
using std::string;
using std::ostringstream;
ostream &operator<<(ostream &out, const Type &type) {
switch (type.code()) {
case Type::Int:
out << "int";
break;
case Type::UInt:
out << "uint";
break;
case Type::Float:
out << "float";
break;
case Type::Handle:
if (type.handle_type) {
out << "(" << type.handle_type->inner_name.name << " *)";
} else {
out << "(void *)";
}
break;
}
if (!type.is_handle()) {
out << type.bits();
}
if (type.lanes() > 1) out << 'x' << type.lanes();
return out;
}
ostream &operator<<(ostream &stream, const Expr &ir) {
if (!ir.defined()) {
stream << "(undefined)";
} else {
Internal::IRPrinter p(stream);
p.print(ir);
}
return stream;
}
ostream &operator<<(ostream &stream, const Buffer<> &buffer) {
return stream << "buffer " << buffer.name() << " = {...}\n";
}
ostream &operator<<(ostream &stream, const Module &m) {
for (const auto &s : m.submodules()) {
stream << s << "\n";
}
stream << "module name=" << m.name() << ", target=" << m.target().to_string() << "\n";
for (const auto &b : m.buffers()) {
stream << b << "\n";
}
for (const auto &f : m.functions()) {
stream << f << "\n";
}
return stream;
}
ostream &operator<<(ostream &out, const DeviceAPI &api) {
switch (api) {
case DeviceAPI::Host:
case DeviceAPI::None:
break;
case DeviceAPI::Default_GPU:
out << "<Default_GPU>";
break;
case DeviceAPI::CUDA:
out << "<CUDA>";
break;
case DeviceAPI::OpenCL:
out << "<OpenCL>";
break;
case DeviceAPI::OpenGLCompute:
out << "<OpenGLCompute>";
break;
case DeviceAPI::GLSL:
out << "<GLSL>";
break;
case DeviceAPI::Metal:
out << "<Metal>";
break;
case DeviceAPI::Hexagon:
out << "<Hexagon>";
break;
}
return out;
}
std::ostream &operator<<(std::ostream &out, const MemoryType &t) {
switch (t) {
case MemoryType::Auto:
out << "Auto";
break;
case MemoryType::Heap:
out << "Heap";
break;
case MemoryType::Stack:
out << "Stack";
break;
case MemoryType::Register:
out << "Register";
break;
case MemoryType::GPUShared:
out << "GPUShared";
break;
}
return out;
}
ostream &operator<<(ostream &stream, const LoopLevel &loop_level) {
return stream << "loop_level("
<< (loop_level.defined() ? loop_level.to_string() : "undefined")
<< ")";
}
namespace Internal {
IRPrinter::~IRPrinter() {
}
void IRPrinter::test() {
Type i32 = Int(32);
Type f32 = Float(32);
Expr x = Variable::make(Int(32), "x");
Expr y = Variable::make(Int(32), "y");
ostringstream expr_source;
expr_source << (x + 3) * (y / 2 + 17);
internal_assert(expr_source.str() == "((x + 3)*((y/2) + 17))");
Stmt store = Store::make("buf", (x * 17) / (x - 3), y - 1, Parameter(), const_true());
Stmt for_loop = For::make("x", -2, y + 2, ForType::Parallel, DeviceAPI::Host, store);
vector<Expr> args(1); args[0] = x % 3;
Expr call = Call::make(i32, "buf", args, Call::Extern);
Stmt store2 = Store::make("out", call + 1, x, Parameter(), const_true());
Stmt for_loop2 = For::make("x", 0, y, ForType::Vectorized , DeviceAPI::Host, store2);
Stmt producer = ProducerConsumer::make_produce("buf", for_loop);
Stmt consumer = ProducerConsumer::make_consume("buf", for_loop2);
Stmt pipeline = Block::make(producer, consumer);
Stmt assertion = AssertStmt::make(y >= 3, Call::make(Int(32), "halide_error_param_too_small_i64",
{string("y"), y, 3}, Call::Extern));
Stmt block = Block::make(assertion, pipeline);
Stmt let_stmt = LetStmt::make("y", 17, block);
Stmt allocate = Allocate::make("buf", f32, MemoryType::Stack, {1023}, const_true(), let_stmt);
ostringstream source;
source << allocate;
std::string correct_source = \
"allocate buf[float32 * 1023] in Stack\n"
"let y = 17\n"
"assert((y >= 3), halide_error_param_too_small_i64(\"y\", y, 3))\n"
"produce buf {\n"
" parallel (x, -2, (y + 2)) {\n"
" buf[(y - 1)] = ((x*17)/(x - 3))\n"
" }\n"
"}\n"
"vectorized (x, 0, y) {\n"
" out[x] = (buf((x % 3)) + 1)\n"
"}\n";
if (source.str() != correct_source) {
internal_error << "Correct output:\n" << correct_source
<< "Actual output:\n" << source.str();
}
std::cout << "IRPrinter test passed\n";
}
ostream& operator<<(ostream &stream, const AssociativePattern &p) {
stream << "{\n";
for (size_t i = 0; i < p.ops.size(); ++i) {
stream << " op_" << i << " -> " << p.ops[i] << ", id_" << i << " -> " << p.identities[i] << "\n";
}
stream << " is commutative? " << p.is_commutative << "\n";
stream << "}\n";
return stream;
}
ostream& operator<<(ostream &stream, const AssociativeOp &op) {
stream << "Pattern:\n" << op.pattern;
stream << "is associative? " << op.is_associative << "\n";
for (size_t i = 0; i < op.xs.size(); ++i) {
stream << " " << op.xs[i].var << " -> " << op.xs[i].expr << "\n";
stream << " " << op.ys[i].var << " -> " << op.ys[i].expr << "\n";
}
stream << "\n";
return stream;
}
ostream &operator<<(ostream &out, const ForType &type) {
switch (type) {
case ForType::Serial:
out << "for";
break;
case ForType::Parallel:
out << "parallel";
break;
case ForType::Unrolled:
out << "unrolled";
break;
case ForType::Vectorized:
out << "vectorized";
break;
case ForType::GPUBlock:
out << "gpu_block";
break;
case ForType::GPUThread:
out << "gpu_thread";
break;
case ForType::GPULane:
out << "gpu_lane";
break;
}
return out;
}
ostream &operator<<(ostream &out, const NameMangling &m) {
switch(m) {
case NameMangling::Default:
out << "default";
break;
case NameMangling::C:
out << "c";
break;
case NameMangling::CPlusPlus:
out << "c++";
break;
}
return out;
}
ostream &operator<<(ostream &stream, const Stmt &ir) {
if (!ir.defined()) {
stream << "(undefined)\n";
} else {
Internal::IRPrinter p(stream);
p.print(ir);
}
return stream;
}
ostream &operator <<(ostream &stream, const LoweredFunc &function) {
stream << function.linkage << " func " << function.name << " (";
for (size_t i = 0; i < function.args.size(); i++) {
stream << function.args[i].name;
if (i + 1 < function.args.size()) {
stream << ", ";
}
}
stream << ") {\n";
stream << function.body;
stream << "}\n\n";
return stream;
}
std::ostream &operator<<(std::ostream &stream, const LoweredFunc::LinkageType &type) {
switch (type) {
case LoweredFunc::ExternalPlusMetadata:
stream << "external_plus_metadata";
break;
case LoweredFunc::External:
stream << "external";
break;
case LoweredFunc::Internal:
stream << "internal";
break;
}
return stream;
}
IRPrinter::IRPrinter(ostream &s) : stream(s), indent(0) {
s.setf(std::ios::fixed, std::ios::floatfield);
}
void IRPrinter::print(Expr ir) {
ir.accept(this);
}
void IRPrinter::print(Stmt ir) {
ir.accept(this);
}
void IRPrinter::print_list(const std::vector<Expr> &exprs) {
for (size_t i = 0; i < exprs.size(); i++) {
print(exprs[i]);
if (i < exprs.size() - 1) {
stream << ", ";
}
}
}
void IRPrinter::do_indent() {
for (int i = 0; i < indent; i++) stream << ' ';
}
void IRPrinter::visit(const IntImm *op) {
if (op->type == Int(32)) {
stream << op->value;
} else {
stream << "(" << op->type << ")" << op->value;
}
}
void IRPrinter::visit(const UIntImm *op) {
stream << "(" << op->type << ")" << op->value;
}
void IRPrinter::visit(const FloatImm *op) {
switch (op->type.bits()) {
case 64:
stream << op->value;
break;
case 32:
stream << op->value << 'f';
break;
case 16:
stream << op->value << 'h';
break;
default:
internal_error << "Bad bit-width for float: " << op->type << "\n";
}
}
void IRPrinter::visit(const StringImm *op) {
stream << '"';
for (size_t i = 0; i < op->value.size(); i++) {
unsigned char c = op->value[i];
if (c >= ' ' && c <= '~' && c != '\\' && c != '"') {
stream << c;
} else {
stream << '\\';
switch (c) {
case '"':
stream << '"';
break;
case '\\':
stream << '\\';
break;
case '\t':
stream << 't';
break;
case '\r':
stream << 'r';
break;
case '\n':
stream << 'n';
break;
default:
string hex_digits = "0123456789ABCDEF";
stream << 'x' << hex_digits[c >> 4] << hex_digits[c & 0xf];
}
}
}
stream << '"';
}
void IRPrinter::visit(const Cast *op) {
stream << op->type << '(';
print(op->value);
stream << ')';
}
void IRPrinter::visit(const Variable *op) {
// omit the type
// stream << op->name << "." << op->type;
stream << op->name;
}
void IRPrinter::visit(const Add *op) {
stream << '(';
print(op->a);
stream << " + ";
print(op->b);
stream << ')';
}
void IRPrinter::visit(const Sub *op) {
stream << '(';
print(op->a);
stream << " - ";
print(op->b);
stream << ')';
}
void IRPrinter::visit(const Mul *op) {
stream << '(';
print(op->a);
stream << "*";
print(op->b);
stream << ')';
}
void IRPrinter::visit(const Div *op) {
stream << '(';
print(op->a);
stream << "/";
print(op->b);
stream << ')';
}
void IRPrinter::visit(const Mod *op) {
stream << '(';
print(op->a);
stream << " % ";
print(op->b);
stream << ')';
}
void IRPrinter::visit(const Min *op) {
stream << "min(";
print(op->a);
stream << ", ";
print(op->b);
stream << ")";
}
void IRPrinter::visit(const Max *op) {
stream << "max(";
print(op->a);
stream << ", ";
print(op->b);
stream << ")";
}
void IRPrinter::visit(const EQ *op) {
stream << '(';
print(op->a);
stream << " == ";
print(op->b);
stream << ')';
}
void IRPrinter::visit(const NE *op) {
stream << '(';
print(op->a);
stream << " != ";
print(op->b);
stream << ')';
}
void IRPrinter::visit(const LT *op) {
stream << '(';
print(op->a);
stream << " < ";
print(op->b);
stream << ')';
}
void IRPrinter::visit(const LE *op) {
stream << '(';
print(op->a);
stream << " <= ";
print(op->b);
stream << ')';
}
void IRPrinter::visit(const GT *op) {
stream << '(';
print(op->a);
stream << " > ";
print(op->b);
stream << ')';
}
void IRPrinter::visit(const GE *op) {
stream << '(';
print(op->a);
stream << " >= ";
print(op->b);
stream << ')';
}
void IRPrinter::visit(const And *op) {
stream << '(';
print(op->a);
stream << " && ";
print(op->b);
stream << ')';
}
void IRPrinter::visit(const Or *op) {
stream << '(';
print(op->a);
stream << " || ";
print(op->b);
stream << ')';
}
void IRPrinter::visit(const Not *op) {
stream << '!';
print(op->a);
}
void IRPrinter::visit(const Select *op) {
stream << "select(";
print(op->condition);
stream << ", ";
print(op->true_value);
stream << ", ";
print(op->false_value);
stream << ")";
}
void IRPrinter::visit(const Load *op) {
stream << op->name << "[";
print(op->index);
stream << "]";
if (!is_one(op->predicate)) {
stream << " if ";
print(op->predicate);
}
}
void IRPrinter::visit(const Ramp *op) {
stream << "ramp(";
print(op->base);
stream << ", ";
print(op->stride);
stream << ", " << op->lanes << ")";
}
void IRPrinter::visit(const Broadcast *op) {
stream << "x" << op->lanes << "(";
print(op->value);
stream << ")";
}
void IRPrinter::visit(const Call *op) {
// TODO: Print indication of C vs C++?
stream << op->name << "(";
if (op->is_intrinsic(Call::reinterpret) ||
op->is_intrinsic(Call::make_struct)) {
// For calls that define a type that isn't just a function of
// the types of the args, we also print the type.
stream << op->type << ", ";
}
print_list(op->args);
stream << ")";
}
void IRPrinter::visit(const Let *op) {
stream << "(let " << op->name << " = ";
print(op->value);
stream << " in ";
print(op->body);
stream << ")";
}
void IRPrinter::visit(const LetStmt *op) {
do_indent();
stream << "let " << op->name << " = ";
print(op->value);
stream << '\n';
print(op->body);
}
void IRPrinter::visit(const AssertStmt *op) {
do_indent();
stream << "assert(";
print(op->condition);
stream << ", ";
print(op->message);
stream << ")\n";
}
void IRPrinter::visit(const ProducerConsumer *op) {
if (op->is_producer) {
do_indent();
stream << "produce " << op->name << " {\n";
indent += 2;
print(op->body);
indent -= 2;
do_indent();
stream << "}\n";
} else {
print(op->body);
}
}
void IRPrinter::visit(const For *op) {
do_indent();
stream << op->for_type << op->device_api << " (" << op->name << ", ";
print(op->min);
stream << ", ";
print(op->extent);
stream << ") {\n";
indent += 2;
print(op->body);
indent -= 2;
do_indent();
stream << "}\n";
}
void IRPrinter::visit(const Store *op) {
do_indent();
stream << op->name << "[";
print(op->index);
stream << "] = ";
print(op->value);
if (!is_one(op->predicate)) {
stream << " if ";
print(op->predicate);
}
stream << '\n';
}
void IRPrinter::visit(const Provide *op) {
do_indent();
stream << op->name << "(";
print_list(op->args);
stream << ") = ";
if (op->values.size() > 1) {
stream << "{";
}
print_list(op->values);
if (op->values.size() > 1) {
stream << "}";
}
stream << '\n';
}
void IRPrinter::visit(const Allocate *op) {
do_indent();
stream << "allocate " << op->name << "[" << op->type;
for (size_t i = 0; i < op->extents.size(); i++) {
stream << " * ";
print(op->extents[i]);
}
stream << "]";
if (op->memory_type != MemoryType::Auto) {
stream << " in " << op->memory_type;
}
if (!is_one(op->condition)) {
stream << " if ";
print(op->condition);
}
if (op->new_expr.defined()) {
stream << "\n custom_new { " << op->new_expr << " }";
}
if (!op->free_function.empty()) {
stream << "\n custom_delete { " << op->free_function << "(<args>); }";
}
stream << "\n";
print(op->body);
}
void IRPrinter::visit(const Free *op) {
do_indent();
stream << "free " << op->name;
stream << '\n';
}
void IRPrinter::visit(const Realize *op) {
do_indent();
stream << "realize " << op->name << "(";
for (size_t i = 0; i < op->bounds.size(); i++) {
stream << "[";
print(op->bounds[i].min);
stream << ", ";
print(op->bounds[i].extent);
stream << "]";
if (i < op->bounds.size() - 1) stream << ", ";
}
stream << ")";
if (op->memory_type != MemoryType::Auto) {
stream << " in " << op->memory_type;
}
if (!is_one(op->condition)) {
stream << " if ";
print(op->condition);
}
stream << " {\n";
indent += 2;
print(op->body);
indent -= 2;
do_indent();
stream << "}\n";
}
void IRPrinter::visit(const Prefetch *op) {
do_indent();
stream << "prefetch " << op->name << "(";
for (size_t i = 0; i < op->bounds.size(); i++) {
stream << "[";
print(op->bounds[i].min);
stream << ", ";
print(op->bounds[i].extent);
stream << "]";
if (i < op->bounds.size() - 1) stream << ", ";
}
stream << ")\n";
}
void IRPrinter::visit(const Block *op) {
print(op->first);
if (op->rest.defined()) print(op->rest);
}
void IRPrinter::visit(const IfThenElse *op) {
do_indent();
while (1) {
stream << "if (" << op->condition << ") {\n";
indent += 2;
print(op->then_case);
indent -= 2;
if (!op->else_case.defined()) {
break;
}
if (const IfThenElse *nested_if = op->else_case.as<IfThenElse>()) {
do_indent();
stream << "} else ";
op = nested_if;
} else {
do_indent();
stream << "} else {\n";
indent += 2;
print(op->else_case);
indent -= 2;
break;
}
}
do_indent();
stream << "}\n";
}
void IRPrinter::visit(const Evaluate *op) {
do_indent();
print(op->value);
stream << "\n";
}
void IRPrinter::visit(const Shuffle *op) {
if (op->is_concat()) {
stream << "concat_vectors(";
print_list(op->vectors);
stream << ")";
} else if (op->is_interleave()) {
stream << "interleave_vectors(";
print_list(op->vectors);
stream << ")";
} else if (op->is_extract_element()) {
stream << "extract_element(";
print_list(op->vectors);
stream << ", " << op->indices[0];
stream << ")";
} else if (op->is_slice()) {
stream << "slice_vectors(";
print_list(op->vectors);
stream << ", " << op->slice_begin() << ", " << op->slice_stride() << ", " << op->indices.size();
stream << ")";
} else {
stream << "shuffle(";
print_list(op->vectors);
stream << ", ";
for (size_t i = 0; i < op->indices.size(); i++) {
print(op->indices[i]);
if (i < op->indices.size() - 1) {
stream << ", ";
}
}
stream << ")";
}
}
}}
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