bsimmers
cf87b7eec3
This diff adds a very, very basic region translator. Together with -vEval.JitRegionSelector=method, it is capable of translating very simple methods without using a Tracelet. It takes in a RegionDesc struct and creates NormalizedInstructions on the stack to drive the translate* methods in irtranslator.cpp. I started trying to get all tests passing with JitRegionSelector=method (by replacing lots of asserts with punts) but decided it's not worth it right now. I'm planning on writing a Tracelet -> RegionDesc converter next and expanding translateRegion to handle everything that throws at it.
1862 linhas
54 KiB
C++
1862 linhas
54 KiB
C++
/*
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+----------------------------------------------------------------------+
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| HipHop for PHP |
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+----------------------------------------------------------------------+
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| Copyright (c) 2010-2013 Facebook, Inc. (http://www.facebook.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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*/
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#include <stdint.h>
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#include "hphp/runtime/base/strings.h"
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#include "folly/Format.h"
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#include "folly/Conv.h"
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#include "hphp/util/trace.h"
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#include "hphp/util/stack_trace.h"
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#include "hphp/util/util.h"
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#include "hphp/runtime/vm/bytecode.h"
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#include "hphp/runtime/vm/runtime.h"
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#include "hphp/runtime/base/complex_types.h"
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#include "hphp/runtime/base/runtime_option.h"
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#include "hphp/runtime/vm/jit/targetcache.h"
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#include "hphp/runtime/vm/jit/translator-inline.h"
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#include "hphp/runtime/vm/jit/translator-x64.h"
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#include "hphp/runtime/base/stats.h"
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#include "hphp/runtime/vm/jit/ir.h"
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#include "hphp/runtime/vm/jit/opt.h"
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#include "hphp/runtime/vm/jit/linearscan.h"
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#include "hphp/runtime/vm/jit/codegen.h"
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#include "hphp/runtime/vm/jit/hhbctranslator.h"
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#include "hphp/runtime/vm/jit/print.h"
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#include "hphp/runtime/vm/jit/check.h"
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// Include last to localize effects to this file
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#include "hphp/util/assert_throw.h"
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namespace HPHP {
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namespace Transl {
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using namespace reg;
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using namespace Util;
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using namespace Trace;
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using std::max;
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TRACE_SET_MOD(hhir);
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#ifdef DEBUG
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static const bool debug = true;
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#else
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static const bool debug = false;
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#endif
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#define TVOFF(nm) offsetof(TypedValue, nm)
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#define AROFF(nm) offsetof(ActRec, nm)
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#define HHIR_UNIMPLEMENTED_OP(op) \
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do { \
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throw JIT::FailedIRGen(__FILE__, __LINE__, op); \
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} while (0)
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#define HHIR_UNIMPLEMENTED(op) \
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do { \
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throw JIT::FailedIRGen(__FILE__, __LINE__, #op); \
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} while (0)
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#define HHIR_UNIMPLEMENTED_WHEN(expr, op) \
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do { \
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if (expr) { \
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throw JIT::FailedIRGen(__FILE__, __LINE__, #op); \
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} \
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} while (0)
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#define HHIR_EMIT(op, ...) \
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do { \
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m_hhbcTrans->emit ## op(__VA_ARGS__); \
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return; \
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} while (0)
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bool isInferredType(const NormalizedInstruction& i) {
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return (i.getOutputUsage(i.outStack) ==
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NormalizedInstruction::OutputInferred);
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}
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JIT::Type getInferredOrPredictedType(const NormalizedInstruction& i) {
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NormalizedInstruction::OutputUse u = i.getOutputUsage(i.outStack);
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if (u == NormalizedInstruction::OutputInferred ||
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(u == NormalizedInstruction::OutputUsed && i.outputPredicted)) {
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return JIT::Type::fromRuntimeType(i.outStack->rtt);
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}
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return JIT::Type::None;
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}
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void
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TranslatorX64::irCheckType(X64Assembler& a,
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const Location& l,
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const RuntimeType& rtt,
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SrcRec& fail) {
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// We can get invalid inputs as a side effect of reading invalid
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// items out of BBs we truncate; they don't need guards.
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if (rtt.isVagueValue()) return;
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switch (l.space) {
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case Location::Stack:
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{
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uint32_t stackOffset = locPhysicalOffset(l);
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m_hhbcTrans->guardTypeStack(stackOffset,
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JIT::Type::fromRuntimeType(rtt));
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}
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break;
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case Location::Local:
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m_hhbcTrans->guardTypeLocal(l.offset, JIT::Type::fromRuntimeType(rtt));
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break;
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case Location::Iter:
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case Location::Invalid:
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case Location::Litstr:
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case Location::Litint:
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case Location::This:
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assert(false); // should not happen
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}
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}
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void
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Translator::translateMod(const NormalizedInstruction& i) {
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HHIR_EMIT(Mod);
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}
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void
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Translator::translateBinaryArithOp(const NormalizedInstruction& i) {
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const Opcode op = i.op();
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switch (op) {
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#define CASE(OpBc) \
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case Op ## OpBc: HHIR_EMIT(OpBc);
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CASE(Add)
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CASE(Sub)
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CASE(BitAnd)
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CASE(BitOr)
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CASE(BitXor)
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CASE(Mul)
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#undef CASE
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default: {
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not_reached();
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};
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}
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NOT_REACHED();
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}
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void
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Translator::translateSameOp(const NormalizedInstruction& i) {
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const Opcode op = i.op();
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assert(op == OpSame || op == OpNSame);
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if (op == OpSame) {
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HHIR_EMIT(Same);
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} else {
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HHIR_EMIT(NSame);
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}
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}
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void
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Translator::translateEqOp(const NormalizedInstruction& i) {
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const Opcode op = i.op();
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assert(op == OpEq || op == OpNeq);
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if (op == OpEq) {
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HHIR_EMIT(Eq);
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} else {
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HHIR_EMIT(Neq);
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}
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}
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void
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Translator::translateLtGtOp(const NormalizedInstruction& i) {
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const Opcode op = i.op();
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assert(op == OpLt || op == OpLte || op == OpGt || op == OpGte);
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assert(i.inputs.size() == 2);
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assert(i.inputs[0]->outerType() != KindOfRef);
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assert(i.inputs[1]->outerType() != KindOfRef);
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DataType leftType = i.inputs[0]->outerType();
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DataType rightType = i.inputs[1]->outerType();
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bool ok = TypeConstraint::equivDataTypes(leftType, rightType) &&
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(i.inputs[0]->isNull() ||
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leftType == KindOfBoolean ||
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i.inputs[0]->isInt());
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HHIR_UNIMPLEMENTED_WHEN(!ok, LtGtOp);
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switch (op) {
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case OpLt : HHIR_EMIT(Lt);
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case OpLte : HHIR_EMIT(Lte);
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case OpGt : HHIR_EMIT(Gt);
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case OpGte : HHIR_EMIT(Gte);
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default : HHIR_UNIMPLEMENTED(LtGtOp);
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}
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}
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void
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Translator::translateUnaryBooleanOp(const NormalizedInstruction& i) {
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const Opcode op = i.op();
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assert(op == OpCastBool || op == OpEmptyL);
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if (op == OpCastBool) {
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HHIR_EMIT(CastBool);
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} else {
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HHIR_EMIT(EmptyL, i.inputs[0]->location.offset);
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}
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}
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void
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Translator::translateBranchOp(const NormalizedInstruction& i) {
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const Opcode op = i.op();
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assert(op == OpJmpZ || op == OpJmpNZ);
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assert(!i.next);
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if (op == OpJmpZ) {
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HHIR_EMIT(JmpZ, i.offset() + i.imm[0].u_BA);
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} else {
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HHIR_EMIT(JmpNZ, i.offset() + i.imm[0].u_BA);
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}
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}
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void
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Translator::translateCGetL(const NormalizedInstruction& i) {
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const DEBUG_ONLY Opcode op = i.op();
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assert(op == OpFPassL || OpCGetL);
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const vector<DynLocation*>& inputs = i.inputs;
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assert(inputs.size() == 1);
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assert(inputs[0]->isLocal());
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HHIR_EMIT(CGetL, inputs[0]->location.offset);
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}
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void
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Translator::translateCGetL2(const NormalizedInstruction& ni) {
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const int locIdx = 1;
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HHIR_EMIT(CGetL2, ni.inputs[locIdx]->location.offset);
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}
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void
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Translator::translateVGetL(const NormalizedInstruction& i) {
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HHIR_EMIT(VGetL, i.inputs[0]->location.offset);
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}
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void
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Translator::translateAssignToLocalOp(const NormalizedInstruction& ni) {
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DEBUG_ONLY const int rhsIdx = 0;
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const int locIdx = 1;
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const Opcode op = ni.op();
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assert(op == OpSetL || op == OpBindL);
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assert(ni.inputs.size() == 2);
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assert((op == OpBindL) ==
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(ni.inputs[rhsIdx]->outerType() == KindOfRef));
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assert(ni.inputs[rhsIdx]->isStack());
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if (op == OpSetL) {
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assert(ni.inputs[locIdx]->isLocal());
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HHIR_EMIT(SetL, ni.inputs[locIdx]->location.offset);
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} else {
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assert(op == OpBindL);
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HHIR_EMIT(BindL, ni.inputs[locIdx]->location.offset);
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}
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}
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void
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Translator::translatePopC(const NormalizedInstruction& i) {
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assert(i.inputs.size() == 1);
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if (i.inputs[0]->rtt.isVagueValue()) {
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HHIR_EMIT(PopR);
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} else {
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HHIR_EMIT(PopC);
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}
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}
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void
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Translator::translatePopV(const NormalizedInstruction& i) {
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assert(i.inputs[0]->rtt.isVagueValue() || i.inputs[0]->isRef());
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HHIR_EMIT(PopV);
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}
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void
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Translator::translatePopR(const NormalizedInstruction& i) {
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translatePopC(i);
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}
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void
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Translator::translateUnboxR(const NormalizedInstruction& i) {
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if (i.noOp) {
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// statically proved to be unboxed -- just pass that info to the IR
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TRACE(1, "HHIR: translateUnboxR: output inferred to be Cell\n");
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m_hhbcTrans->assertTypeStack(0, JIT::Type::Cell);
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} else {
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HHIR_EMIT(UnboxR);
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}
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}
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void
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Translator::translateNull(const NormalizedInstruction& i) {
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assert(i.inputs.size() == 0);
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HHIR_EMIT(Null);
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}
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void
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Translator::translateNullUninit(const NormalizedInstruction& i) {
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HHIR_EMIT(NullUninit);
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}
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void
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Translator::translateTrue(const NormalizedInstruction& i) {
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assert(i.inputs.size() == 0);
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HHIR_EMIT(True);
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}
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void
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Translator::translateFalse(const NormalizedInstruction& i) {
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assert(i.inputs.size() == 0);
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HHIR_EMIT(False);
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}
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void
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Translator::translateInt(const NormalizedInstruction& i) {
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assert(i.inputs.size() == 0);
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HHIR_EMIT(Int, i.imm[0].u_I64A);
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}
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void
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Translator::translateDouble(const NormalizedInstruction& i) {
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HHIR_EMIT(Double, i.imm[0].u_DA);
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}
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void
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Translator::translateString(const NormalizedInstruction& i) {
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assert(i.inputs.size() == 0);
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HHIR_EMIT(String, (i.imm[0].u_SA));
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}
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void
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Translator::translateArray(const NormalizedInstruction& i) {
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assert(i.inputs.size() == 0);
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HHIR_EMIT(Array, i.imm[0].u_AA);
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}
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void
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Translator::translateNewArray(const NormalizedInstruction& i) {
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HHIR_EMIT(NewArray, i.imm[0].u_IVA);
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}
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void
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Translator::translateNop(const NormalizedInstruction& i) {
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HHIR_EMIT(Nop);
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}
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void
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Translator::translateAddElemC(const NormalizedInstruction& i) {
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HHIR_EMIT(AddElemC);
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}
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void
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Translator::translateAddNewElemC(const NormalizedInstruction& i) {
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assert(i.inputs.size() == 2);
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assert(i.inputs[0]->outerType() != KindOfRef);
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assert(i.inputs[1]->outerType() != KindOfRef);
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assert(i.inputs[0]->isStack());
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assert(i.inputs[1]->isStack());
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HHIR_EMIT(AddNewElemC);
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}
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void
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Translator::translateCns(const NormalizedInstruction& i) {
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HHIR_EMIT(Cns, i.imm[0].u_SA);
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}
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void
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Translator::translateDefCns(const NormalizedInstruction& i) {
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HHIR_EMIT(DefCns, (i.imm[0].u_SA));
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}
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void
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Translator::translateClsCnsD(const NormalizedInstruction& i) {
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HHIR_EMIT(ClsCnsD, (i.imm[0].u_SA), (i.imm[1].u_SA));
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}
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void
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Translator::translateConcat(const NormalizedInstruction& i) {
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HHIR_EMIT(Concat);
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}
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void
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Translator::translateAdd(const NormalizedInstruction& i) {
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assert(i.inputs.size() == 2);
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if (i.inputs[0]->valueType() == KindOfArray &&
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i.inputs[1]->valueType() == KindOfArray) {
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HHIR_EMIT(ArrayAdd);
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return;
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}
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HHIR_EMIT(Add);
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}
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void
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Translator::translateXor(const NormalizedInstruction& i) {
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HHIR_EMIT(Xor);
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}
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void
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Translator::translateNot(const NormalizedInstruction& i) {
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HHIR_EMIT(Not);
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}
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void
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Translator::translateBitNot(const NormalizedInstruction& i) {
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HHIR_EMIT(BitNot);
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}
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void
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Translator::translateCastInt(const NormalizedInstruction& i) {
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assert(i.inputs.size() == 1);
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HHIR_EMIT(CastInt);
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/* nop */
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}
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void
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Translator::translateCastArray(const NormalizedInstruction& i) {
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HHIR_EMIT(CastArray);
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}
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void
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Translator::translateCastObject(const NormalizedInstruction& i) {
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HHIR_EMIT(CastObject);
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}
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void
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Translator::translateCastDouble(const NormalizedInstruction& i) {
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HHIR_EMIT(CastDouble);
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}
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void
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Translator::translateCastString(const NormalizedInstruction& i) {
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HHIR_EMIT(CastString);
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}
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void
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Translator::translatePrint(const NormalizedInstruction& i) {
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HHIR_EMIT(Print);
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}
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void
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Translator::translateJmp(const NormalizedInstruction& i) {
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HHIR_EMIT(Jmp, i.offset() + i.imm[0].u_BA, i.breaksTracelet, i.noSurprise);
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}
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void
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Translator::translateSwitch(const NormalizedInstruction& i) {
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HHIR_EMIT(Switch, i.immVec, i.imm[1].u_I64A, i.imm[2].u_IVA);
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}
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void
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Translator::translateSSwitch(const NormalizedInstruction& i) {
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HHIR_EMIT(SSwitch, i.immVec);
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}
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/*
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* translateRetC --
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*
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* Return to caller with the current activation record replaced with the
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* top-of-stack return value.
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*/
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void
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Translator::translateRetC(const NormalizedInstruction& i) {
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HHIR_EMIT(RetC, i.inlineReturn);
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}
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void
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Translator::translateRetV(const NormalizedInstruction& i) {
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HHIR_EMIT(RetV, i.inlineReturn);
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}
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void
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Translator::translateNativeImpl(const NormalizedInstruction& ni) {
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HHIR_EMIT(NativeImpl);
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}
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// emitClsLocalIndex --
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// emitStringToClass --
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// emitStringToKnownClass --
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// emitObjToClass --
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// emitClsAndPals --
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// Helpers for AGetC/AGetL.
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const int kEmitClsLocalIdx = 0;
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void Translator::translateAGetC(const NormalizedInstruction& ni) {
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const StringData* clsName =
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ni.inputs[kEmitClsLocalIdx]->rtt.valueStringOrNull();
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HHIR_EMIT(AGetC, clsName);
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}
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void Translator::translateAGetL(const NormalizedInstruction& i) {
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assert(i.inputs[kEmitClsLocalIdx]->isLocal());
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const DynLocation* dynLoc = i.inputs[kEmitClsLocalIdx];
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const StringData* clsName = dynLoc->rtt.valueStringOrNull();
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HHIR_EMIT(AGetL, dynLoc->location.offset, clsName);
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}
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void Translator::translateSelf(const NormalizedInstruction& i) {
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HHIR_EMIT(Self);
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}
|
|
|
|
void Translator::translateParent(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(Parent);
|
|
}
|
|
|
|
void Translator::translateDup(const NormalizedInstruction& ni) {
|
|
HHIR_EMIT(Dup);
|
|
}
|
|
|
|
void Translator::translateCreateCont(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(CreateCont, i.imm[0].u_SA);
|
|
}
|
|
|
|
void Translator::translateContEnter(const NormalizedInstruction& i) {
|
|
auto after = nextSrcKey(i).offset();
|
|
|
|
// ContEnter can't exist in an inlined function right now. (If it
|
|
// ever can, this curFunc() needs to change.)
|
|
assert(!m_hhbcTrans->isInlining());
|
|
const Func* srcFunc = curFunc();
|
|
int32_t callOffsetInUnit = after - srcFunc->base();
|
|
|
|
HHIR_EMIT(ContEnter, callOffsetInUnit);
|
|
}
|
|
|
|
void Translator::translateContExit(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(ContExit);
|
|
}
|
|
|
|
void Translator::translateUnpackCont(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(UnpackCont);
|
|
}
|
|
|
|
void Translator::translatePackCont(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(PackCont, i.imm[0].u_IVA);
|
|
}
|
|
|
|
void Translator::translateContRetC(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(ContRetC);
|
|
}
|
|
|
|
void Translator::translateContNext(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(ContNext);
|
|
}
|
|
|
|
void Translator::translateContSend(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(ContSend);
|
|
}
|
|
|
|
void Translator::translateContRaise(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(ContRaise);
|
|
}
|
|
|
|
void Translator::translateContValid(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(ContValid);
|
|
}
|
|
|
|
void Translator::translateContCurrent(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(ContCurrent);
|
|
}
|
|
|
|
void Translator::translateContStopped(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(ContStopped);
|
|
}
|
|
|
|
void Translator::translateContHandle(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(ContHandle);
|
|
}
|
|
|
|
void Translator::translateStrlen(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(Strlen);
|
|
}
|
|
|
|
void Translator::translateIncStat(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(IncStat, i.imm[0].u_IVA, i.imm[1].u_IVA);
|
|
}
|
|
|
|
void Translator::translateArrayIdx(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(ArrayIdx);
|
|
}
|
|
|
|
void Translator::translateClassExists(const NormalizedInstruction& i) {
|
|
const StringData* clsName = i.inputs[1]->rtt.valueStringOrNull();
|
|
HHIR_EMIT(ClassExists, clsName);
|
|
}
|
|
|
|
void Translator::translateInterfaceExists(const NormalizedInstruction& i) {
|
|
const StringData* ifaceName = i.inputs[1]->rtt.valueStringOrNull();
|
|
|
|
HHIR_EMIT(InterfaceExists, ifaceName);
|
|
}
|
|
|
|
void Translator::translateTraitExists(const NormalizedInstruction& i) {
|
|
const StringData* traitName = i.inputs[1]->rtt.valueStringOrNull();
|
|
|
|
HHIR_EMIT(TraitExists, traitName);
|
|
}
|
|
|
|
void Translator::translateVGetS(const NormalizedInstruction& i) {
|
|
const int kPropNameIdx = 1;
|
|
const StringData* propName = i.inputs[kPropNameIdx]->rtt.valueStringOrNull();
|
|
HHIR_EMIT(VGetS, propName);
|
|
}
|
|
|
|
void
|
|
Translator::translateVGetG(const NormalizedInstruction& i) {
|
|
const StringData* name = i.inputs[0]->rtt.valueStringOrNull();
|
|
HHIR_EMIT(VGetG, name);
|
|
}
|
|
|
|
void Translator::translateBindS(const NormalizedInstruction& i) {
|
|
const int kPropIdx = 2;
|
|
const StringData* propName = i.inputs[kPropIdx]->rtt.valueStringOrNull();
|
|
HHIR_EMIT(BindS, propName);
|
|
}
|
|
|
|
void Translator::translateEmptyS(const NormalizedInstruction& i) {
|
|
const int kPropNameIdx = 1;
|
|
const StringData* propName = i.inputs[kPropNameIdx]->rtt.valueStringOrNull();
|
|
HHIR_EMIT(EmptyS, propName);
|
|
}
|
|
|
|
void Translator::translateEmptyG(const NormalizedInstruction& i) {
|
|
const StringData* gblName = i.inputs[0]->rtt.valueStringOrNull();
|
|
HHIR_EMIT(EmptyG, gblName);
|
|
}
|
|
|
|
void
|
|
Translator::translateIssetS(const NormalizedInstruction& i) {
|
|
const int kPropNameIdx = 1;
|
|
const StringData* propName = i.inputs[kPropNameIdx]->rtt.valueStringOrNull();
|
|
HHIR_EMIT(IssetS, propName);
|
|
}
|
|
|
|
void
|
|
Translator::translateIssetG(const NormalizedInstruction& i) {
|
|
const StringData* gblName = i.inputs[0]->rtt.valueStringOrNull();
|
|
HHIR_EMIT(IssetG, gblName);
|
|
}
|
|
|
|
void
|
|
Translator::translateUnsetG(const NormalizedInstruction& i) {
|
|
const StringData* gblName = i.inputs[0]->rtt.valueStringOrNull();
|
|
HHIR_EMIT(UnsetG, gblName);
|
|
}
|
|
|
|
void
|
|
Translator::translateUnsetN(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(UnsetN);
|
|
}
|
|
|
|
void Translator::translateCGetS(const NormalizedInstruction& i) {
|
|
const int kPropNameIdx = 1;
|
|
const StringData* propName = i.inputs[kPropNameIdx]->rtt.valueStringOrNull();
|
|
HHIR_EMIT(CGetS, propName,
|
|
getInferredOrPredictedType(i), isInferredType(i));
|
|
}
|
|
|
|
void Translator::translateSetS(const NormalizedInstruction& i) {
|
|
const int kPropIdx = 2;
|
|
const StringData* propName = i.inputs[kPropIdx]->rtt.valueStringOrNull();
|
|
HHIR_EMIT(SetS, propName);
|
|
}
|
|
|
|
void
|
|
Translator::translateCGetG(const NormalizedInstruction& i) {
|
|
const StringData* name = i.inputs[0]->rtt.valueStringOrNull();
|
|
HHIR_EMIT(CGetG, name, getInferredOrPredictedType(i), isInferredType(i));
|
|
}
|
|
|
|
void Translator::translateSetG(const NormalizedInstruction& i) {
|
|
const StringData* name = i.inputs[1]->rtt.valueStringOrNull();
|
|
HHIR_EMIT(SetG, name);
|
|
}
|
|
|
|
void Translator::translateBindG(const NormalizedInstruction& i) {
|
|
const StringData* name = i.inputs[1]->rtt.valueStringOrNull();
|
|
HHIR_EMIT(BindG, name);
|
|
}
|
|
|
|
void
|
|
Translator::translateLateBoundCls(const NormalizedInstruction&i) {
|
|
HHIR_EMIT(LateBoundCls);
|
|
}
|
|
|
|
void Translator::translateFPassL(const NormalizedInstruction& ni) {
|
|
if (ni.preppedByRef) {
|
|
translateVGetL(ni);
|
|
} else {
|
|
translateCGetL(ni);
|
|
}
|
|
}
|
|
|
|
void Translator::translateFPassS(const NormalizedInstruction& ni) {
|
|
if (ni.preppedByRef) {
|
|
translateVGetS(ni);
|
|
} else {
|
|
translateCGetS(ni);
|
|
}
|
|
}
|
|
|
|
void Translator::translateFPassG(const NormalizedInstruction& ni) {
|
|
if (ni.preppedByRef) {
|
|
translateVGetG(ni);
|
|
} else {
|
|
translateCGetG(ni);
|
|
}
|
|
}
|
|
|
|
void
|
|
Translator::translateCheckTypeOp(const NormalizedInstruction& ni) {
|
|
assert(ni.inputs.size() == 1);
|
|
|
|
const Opcode op = ni.op();
|
|
const int off = ni.inputs[0]->location.offset;
|
|
switch (op) {
|
|
case OpIssetL: HHIR_EMIT(IssetL, off);
|
|
case OpIsNullL: HHIR_EMIT(IsNullL, off);
|
|
case OpIsNullC: HHIR_EMIT(IsNullC);
|
|
case OpIsStringL: HHIR_EMIT(IsStringL, off);
|
|
case OpIsStringC: HHIR_EMIT(IsStringC);
|
|
case OpIsArrayL: HHIR_EMIT(IsArrayL, off);
|
|
case OpIsArrayC: HHIR_EMIT(IsArrayC);
|
|
case OpIsIntL: HHIR_EMIT(IsIntL, off);
|
|
case OpIsIntC: HHIR_EMIT(IsIntC);
|
|
case OpIsBoolL: HHIR_EMIT(IsBoolL, off);
|
|
case OpIsBoolC: HHIR_EMIT(IsBoolC);
|
|
case OpIsDoubleL: HHIR_EMIT(IsDoubleL, off);
|
|
case OpIsDoubleC: HHIR_EMIT(IsDoubleC);
|
|
case OpIsObjectL: HHIR_EMIT(IsObjectL, off);
|
|
case OpIsObjectC: HHIR_EMIT(IsObjectC);
|
|
// Note: for IsObject*, we need to emit some kind of
|
|
// call to ObjectData::isResource or something.
|
|
}
|
|
NOT_REACHED();
|
|
}
|
|
|
|
void
|
|
Translator::translateAKExists(const NormalizedInstruction& ni) {
|
|
HHIR_EMIT(AKExists);
|
|
}
|
|
|
|
void
|
|
Translator::translateSetOpL(const NormalizedInstruction& i) {
|
|
JIT::Opcode opc;
|
|
switch (i.imm[1].u_OA) {
|
|
case SetOpPlusEqual: opc = JIT::OpAdd; break;
|
|
case SetOpMinusEqual: opc = JIT::OpSub; break;
|
|
case SetOpMulEqual: opc = JIT::OpMul; break;
|
|
case SetOpDivEqual: HHIR_UNIMPLEMENTED(SetOpL_Div);
|
|
case SetOpConcatEqual: opc = JIT::Concat; break;
|
|
case SetOpModEqual: HHIR_UNIMPLEMENTED(SetOpL_Mod);
|
|
case SetOpAndEqual: opc = JIT::OpBitAnd; break;
|
|
case SetOpOrEqual: opc = JIT::OpBitOr; break;
|
|
case SetOpXorEqual: opc = JIT::OpBitXor; break;
|
|
case SetOpSlEqual: HHIR_UNIMPLEMENTED(SetOpL_Shl);
|
|
case SetOpSrEqual: HHIR_UNIMPLEMENTED(SetOpL_Shr);
|
|
default: not_reached();
|
|
}
|
|
const int localIdx = 1;
|
|
HHIR_EMIT(SetOpL, opc, i.inputs[localIdx]->location.offset);
|
|
}
|
|
|
|
void
|
|
Translator::translateIncDecL(const NormalizedInstruction& i) {
|
|
const vector<DynLocation*>& inputs = i.inputs;
|
|
assert(inputs.size() == 1);
|
|
assert(inputs[0]->isLocal());
|
|
const IncDecOp oplet = IncDecOp(i.imm[1].u_OA);
|
|
assert(oplet == PreInc || oplet == PostInc || oplet == PreDec ||
|
|
oplet == PostDec);
|
|
bool post = (oplet == PostInc || oplet == PostDec);
|
|
bool pre = !post;
|
|
bool inc = (oplet == PostInc || oplet == PreInc);
|
|
|
|
HHIR_UNIMPLEMENTED_WHEN((i.inputs[0]->valueType() != KindOfBoolean) &&
|
|
(i.inputs[0]->valueType() != KindOfInt64) &&
|
|
(i.inputs[0]->valueType() != KindOfDouble),
|
|
IncDecL_unsupported);
|
|
HHIR_EMIT(IncDecL, pre, inc, inputs[0]->location.offset);
|
|
}
|
|
|
|
void
|
|
Translator::translateUnsetL(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(UnsetL, i.inputs[0]->location.offset);
|
|
}
|
|
|
|
void
|
|
Translator::translateReqDoc(const NormalizedInstruction& i) {
|
|
const StringData* name = i.inputs[0]->rtt.valueStringOrNull();
|
|
HHIR_EMIT(ReqDoc, name);
|
|
}
|
|
|
|
void Translator::translateDefCls(const NormalizedInstruction& i) {
|
|
int cid = i.imm[0].u_IVA;
|
|
HHIR_EMIT(DefCls, cid, i.source.offset());
|
|
}
|
|
|
|
void Translator::translateDefFunc(const NormalizedInstruction& i) {
|
|
int fid = i.imm[0].u_IVA;
|
|
HHIR_EMIT(DefFunc, fid);
|
|
}
|
|
|
|
void
|
|
Translator::translateFPushFunc(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(FPushFunc, (i.imm[0].u_IVA));
|
|
}
|
|
|
|
void
|
|
Translator::translateFPushClsMethodD(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(FPushClsMethodD,
|
|
(i.imm[0].u_IVA),
|
|
(i.imm[1].u_SA),
|
|
(i.imm[2].u_SA));
|
|
}
|
|
|
|
void
|
|
Translator::translateFPushClsMethodF(const NormalizedInstruction& i) {
|
|
// For now, only support cases where both the class and the method are known.
|
|
const int classIdx = 0;
|
|
const int methodIdx = 1;
|
|
DynLocation* classLoc = i.inputs[classIdx];
|
|
DynLocation* methodLoc = i.inputs[methodIdx];
|
|
|
|
HHIR_UNIMPLEMENTED_WHEN(!(methodLoc->isString() &&
|
|
methodLoc->rtt.valueString() != nullptr &&
|
|
classLoc->valueType() == KindOfClass &&
|
|
classLoc->rtt.valueClass() != nullptr),
|
|
FPushClsMethodF_unknown);
|
|
|
|
auto cls = classLoc->rtt.valueClass();
|
|
HHIR_EMIT(FPushClsMethodF,
|
|
i.imm[0].u_IVA, // # of arguments
|
|
cls,
|
|
methodLoc->rtt.valueString());
|
|
}
|
|
|
|
void
|
|
Translator::translateFPushObjMethodD(const NormalizedInstruction& i) {
|
|
assert(i.inputs.size() == 1);
|
|
HHIR_UNIMPLEMENTED_WHEN((i.inputs[0]->valueType() != KindOfObject),
|
|
FPushObjMethod_nonObj);
|
|
assert(i.inputs[0]->valueType() == KindOfObject);
|
|
const Class* baseClass = i.inputs[0]->rtt.valueClass();
|
|
|
|
HHIR_EMIT(FPushObjMethodD,
|
|
i.imm[0].u_IVA,
|
|
i.imm[1].u_IVA,
|
|
baseClass);
|
|
}
|
|
|
|
void Translator::translateFPushCtor(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(FPushCtor, (i.imm[0].u_IVA));
|
|
}
|
|
|
|
void Translator::translateFPushCtorD(const NormalizedInstruction& i) {
|
|
|
|
HHIR_EMIT(FPushCtorD, (i.imm[0].u_IVA), (i.imm[1].u_SA));
|
|
}
|
|
|
|
void Translator::translateCreateCl(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(CreateCl, (i.imm[0].u_IVA), (i.imm[1].u_SA));
|
|
}
|
|
|
|
// static void fatalNullThis() { raise_error(Strings::FATAL_NULL_THIS); }
|
|
|
|
void
|
|
Translator::translateThis(const NormalizedInstruction &i) {
|
|
HHIR_EMIT(This);
|
|
}
|
|
|
|
void
|
|
Translator::translateBareThis(const NormalizedInstruction &i) {
|
|
HHIR_EMIT(BareThis, (i.imm[0].u_OA));
|
|
}
|
|
|
|
void
|
|
Translator::translateCheckThis(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(CheckThis);
|
|
}
|
|
|
|
void
|
|
Translator::translateInitThisLoc(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(InitThisLoc, i.imm[0].u_HA);
|
|
}
|
|
|
|
void
|
|
Translator::translateFPushFuncD(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(FPushFuncD, (i.imm[0].u_IVA), (i.imm[1].u_SA));
|
|
}
|
|
|
|
void
|
|
Translator::translateFPassCOp(const NormalizedInstruction& i) {
|
|
const Opcode op = i.op();
|
|
if (i.preppedByRef && (op == OpFPassCW || op == OpFPassCE)) {
|
|
// These cases might have to raise a warning or an error
|
|
HHIR_UNIMPLEMENTED(FPassCW_FPassCE_byref);
|
|
} else {
|
|
HHIR_EMIT(FPassCOp);
|
|
}
|
|
}
|
|
|
|
void
|
|
Translator::translateFPassV(const NormalizedInstruction& i) {
|
|
if (i.preppedByRef || i.noOp) {
|
|
TRACE(1, "HHIR: translateFPassV: noOp\n");
|
|
return;
|
|
}
|
|
HHIR_EMIT(FPassV);
|
|
}
|
|
|
|
void
|
|
Translator::translateFPushCufIter(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(FPushCufIter, i.imm[0].u_IVA, i.imm[1].u_IA);
|
|
}
|
|
|
|
static const Func*
|
|
findCuf(const NormalizedInstruction& ni,
|
|
Class*& cls, StringData*& invName, bool& forward) {
|
|
forward = (ni.op() == OpFPushCufF);
|
|
cls = nullptr;
|
|
invName = nullptr;
|
|
|
|
DynLocation* callable = ni.inputs[ni.op() == OpFPushCufSafe ? 1 : 0];
|
|
|
|
const StringData* str =
|
|
callable->isString() ? callable->rtt.valueString() : nullptr;
|
|
const ArrayData* arr =
|
|
callable->isArray() ? callable->rtt.valueArray() : nullptr;
|
|
|
|
StringData* sclass = nullptr;
|
|
StringData* sname = nullptr;
|
|
if (str) {
|
|
Func* f = HPHP::Unit::lookupFunc(str);
|
|
if (f) return f;
|
|
String name(const_cast<StringData*>(str));
|
|
int pos = name.find("::");
|
|
if (pos <= 0 || pos + 2 >= name.size() ||
|
|
name.find("::", pos + 2) != String::npos) {
|
|
return nullptr;
|
|
}
|
|
sclass = StringData::GetStaticString(name.substr(0, pos).get());
|
|
sname = StringData::GetStaticString(name.substr(pos + 2).get());
|
|
} else if (arr) {
|
|
if (arr->size() != 2) return nullptr;
|
|
CVarRef e0 = arr->get(int64_t(0), false);
|
|
CVarRef e1 = arr->get(int64_t(1), false);
|
|
if (!e0.isString() || !e1.isString()) return nullptr;
|
|
sclass = e0.getStringData();
|
|
sname = e1.getStringData();
|
|
String name(sname);
|
|
if (name.find("::") != String::npos) return nullptr;
|
|
} else {
|
|
return nullptr;
|
|
}
|
|
|
|
Class* ctx = curFunc()->cls();
|
|
|
|
if (sclass->isame(s_self.get())) {
|
|
if (!ctx) return nullptr;
|
|
cls = ctx;
|
|
forward = true;
|
|
} else if (sclass->isame(s_parent.get())) {
|
|
if (!ctx || !ctx->parent()) return nullptr;
|
|
cls = ctx->parent();
|
|
forward = true;
|
|
} else if (sclass->isame(s_static.get())) {
|
|
return nullptr;
|
|
} else {
|
|
cls = Unit::lookupUniqueClass(sclass);
|
|
if (!cls) return nullptr;
|
|
}
|
|
|
|
bool magicCall = false;
|
|
const Func* f = lookupImmutableMethod(cls, sname, magicCall, true);
|
|
if (!f || (forward && !ctx->classof(f->cls()))) {
|
|
/*
|
|
* To preserve the invariant that the lsb class
|
|
* is an instance of the context class, we require
|
|
* that f's class is an instance of the context class.
|
|
* This is conservative, but without it, we would need
|
|
* a runtime check to decide whether or not to forward
|
|
* the lsb class
|
|
*/
|
|
return nullptr;
|
|
}
|
|
if (magicCall) invName = sname;
|
|
return f;
|
|
}
|
|
|
|
void
|
|
Translator::translateFPushCufOp(const NormalizedInstruction& i) {
|
|
Class* cls = nullptr;
|
|
StringData* invName = nullptr;
|
|
bool forward = false;
|
|
const Func* func = findCuf(i, cls, invName, forward);
|
|
HHIR_EMIT(FPushCufOp, i.op(), cls, invName, func, i.imm[0].u_IVA);
|
|
}
|
|
|
|
void
|
|
Translator::translateFPassR(const NormalizedInstruction& i) {
|
|
/*
|
|
* Like FPassC, FPassR is able to cheat on boxing if the current
|
|
* parameter is pass by reference but we have a cell: the box would refer
|
|
* to exactly one datum (the value currently on the stack).
|
|
*
|
|
* However, if the callee wants a cell and we have a variant we must
|
|
* unbox; otherwise we might accidentally make callee changes to its
|
|
* parameter globally visible.
|
|
*/
|
|
if (!i.preppedByRef) {
|
|
HHIR_EMIT(FPassR);
|
|
} else {
|
|
HHIR_UNIMPLEMENTED(FPassR);
|
|
}
|
|
}
|
|
|
|
void
|
|
Translator::translateFCallBuiltin(const NormalizedInstruction& i) {
|
|
int numArgs = i.imm[0].u_IVA;
|
|
int numNonDefault = i.imm[1].u_IVA;
|
|
Id funcId = i.imm[2].u_SA;
|
|
|
|
HHIR_EMIT(FCallBuiltin, numArgs, numNonDefault, funcId);
|
|
}
|
|
|
|
bool shouldIRInline(const Func* curFunc,
|
|
const Func* func,
|
|
const Tracelet& callee) {
|
|
if (!RuntimeOption::EvalHHIREnableGenTimeInlining) {
|
|
return false;
|
|
}
|
|
|
|
auto refuse = [&](const char* why) -> bool {
|
|
FTRACE(1, "shouldIRInline: refusing {} <reason: {}>\n",
|
|
func->fullName()->data(), why);
|
|
return false;
|
|
};
|
|
auto accept = [&](const char* kind) -> bool {
|
|
FTRACE(1, "shouldIRInline: inlining {} <kind: {}>\n",
|
|
func->fullName()->data(), kind);
|
|
return true;
|
|
};
|
|
|
|
if (func->numLocals() != func->numParams()) {
|
|
return refuse("more locals than params (unsupported)");
|
|
}
|
|
if (func->numIterators() != 0) {
|
|
return refuse("iterators");
|
|
}
|
|
if (func->maxStackCells() >= kStackCheckLeafPadding) {
|
|
FTRACE(1, "{} >= {}\n", func->maxStackCells(), kStackCheckLeafPadding);
|
|
return refuse("too many stack cells");
|
|
}
|
|
|
|
/////////////
|
|
|
|
// Little pattern recognition helpers:
|
|
const NormalizedInstruction* cursor;
|
|
Opcode current;
|
|
auto resetCursor = [&] {
|
|
cursor = callee.m_instrStream.first;
|
|
current = cursor->op();
|
|
};
|
|
auto next = [&]() -> Opcode {
|
|
auto op = cursor->op();
|
|
cursor = cursor->next;
|
|
current = cursor->op();
|
|
return op;
|
|
};
|
|
auto nextIf = [&](Opcode op) -> bool {
|
|
if (current != op) return false;
|
|
next();
|
|
return true;
|
|
};
|
|
auto atRet = [&] { return current == OpRetC || current == OpRetV; };
|
|
|
|
// Simple operations that just put a Cell on the stack. There must
|
|
// either be no inputs, or a single local as an input. For now
|
|
// avoid CreateCont because it depends on the frame.
|
|
auto simpleCell = [&]() -> bool {
|
|
if (current == OpCreateCont) return false;
|
|
if (cursor->outStack && cursor->inputs.empty()) {
|
|
next();
|
|
return true;
|
|
}
|
|
if (current == OpCGetL || current == OpVGetL) {
|
|
next();
|
|
return true;
|
|
}
|
|
return false;
|
|
};
|
|
|
|
// Simple two-cell comparison operators.
|
|
auto simpleCmp = [&]() -> bool {
|
|
switch (current) {
|
|
case OpAdd: case OpSub: case OpMul: case OpDiv: case OpMod:
|
|
case OpXor: case OpNot: case OpSame: case OpNSame: case OpEq:
|
|
case OpNeq: case OpLt: case OpLte: case OpGt: case OpGte:
|
|
case OpBitAnd: case OpBitOr: case OpBitXor: case OpBitNot:
|
|
case OpShl: case OpShr:
|
|
next();
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
};
|
|
|
|
// In the various patterns below, when we're down to a cell on the
|
|
// stack, this is used to allow simple constant-foldable
|
|
// manipulations of it before return.
|
|
auto cellManipRet = [&]() -> bool {
|
|
if (nextIf(OpNot)) return atRet();
|
|
if (simpleCell() && simpleCmp()) return atRet();
|
|
return atRet();
|
|
};
|
|
|
|
resetCursor();
|
|
|
|
////////////
|
|
|
|
// Simple property accessors.
|
|
resetCursor();
|
|
if (current == OpCheckThis) next();
|
|
if (cursor->op() == OpCGetM &&
|
|
cursor->immVec.locationCode() == LH &&
|
|
cursor->immVecM.size() == 1 &&
|
|
cursor->immVecM.front() == MPT &&
|
|
!mInstrHasUnknownOffsets(*cursor, func->cls())) {
|
|
next();
|
|
// Can't currently support cellManipRet because it's usually going
|
|
// to be CGetM-prediction, which will use the frame.
|
|
if (atRet()) {
|
|
return accept("simple property accessor");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Functions that set an object property to a simple cell value.
|
|
* E.g. something that does $this->foo = null;
|
|
*/
|
|
resetCursor();
|
|
if (current == OpCheckThis) next();
|
|
if (simpleCell()) {
|
|
if (cursor->op() == OpSetM &&
|
|
cursor->immVec.locationCode() == LH &&
|
|
cursor->immVecM.size() == 1 &&
|
|
cursor->immVecM.front() == MPT &&
|
|
!mInstrHasUnknownOffsets(*cursor, func->cls())) {
|
|
next();
|
|
if (nextIf(OpPopC) && simpleCell() && atRet()) {
|
|
return accept("simpleCell prop setter");
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Continuation allocation functions that take no arguments.
|
|
*/
|
|
resetCursor();
|
|
if (current == OpCreateCont) {
|
|
if (func->numParams()) {
|
|
FTRACE(1, "CreateCont with {} args\n", func->numParams());
|
|
}
|
|
next();
|
|
if (atRet()) return accept("continuation creator");
|
|
}
|
|
|
|
/*
|
|
* Anything that just puts a value on the stack with no inputs, and
|
|
* then returns it, after possibly doing some comparison with
|
|
* another such thing.
|
|
*
|
|
* E.g. String; String; Same; RetC, or Null; RetC.
|
|
*/
|
|
resetCursor();
|
|
if (simpleCell() && cellManipRet()) {
|
|
return accept("simple returner");
|
|
}
|
|
|
|
// BareThis; InstanceOfD; RetC
|
|
resetCursor();
|
|
if (nextIf(OpBareThis) && nextIf(OpInstanceOfD) && atRet()) {
|
|
return accept("$this instanceof D");
|
|
}
|
|
|
|
return refuse("unknown kind of function");
|
|
}
|
|
|
|
void
|
|
Translator::translateFCall(const NormalizedInstruction& i) {
|
|
auto const numArgs = i.imm[0].u_IVA;
|
|
|
|
always_assert(!m_hhbcTrans->isInlining() && "curUnit and curFunc calls");
|
|
const Opcode* after = curUnit()->at(nextSrcKey(i).offset());
|
|
const Func* srcFunc = curFunc();
|
|
Offset returnBcOffset =
|
|
srcFunc->unit()->offsetOf(after - srcFunc->base());
|
|
|
|
/*
|
|
* If we have a calleeTrace, we're going to see if we should inline
|
|
* the call.
|
|
*/
|
|
if (i.calleeTrace) {
|
|
if (!m_hhbcTrans->isInlining()) {
|
|
assert(shouldIRInline(curFunc(), i.funcd, *i.calleeTrace));
|
|
|
|
m_hhbcTrans->beginInlining(numArgs, i.funcd, returnBcOffset);
|
|
static const bool shapeStats = Stats::enabledAny() &&
|
|
getenv("HHVM_STATS_INLINESHAPE");
|
|
if (shapeStats) {
|
|
m_hhbcTrans->profileInlineFunctionShape(traceletShape(*i.calleeTrace));
|
|
}
|
|
|
|
for (auto* ni = i.calleeTrace->m_instrStream.first;
|
|
ni; ni = ni->next) {
|
|
m_curNI = ni;
|
|
SCOPE_EXIT { m_curNI = &i; };
|
|
translateInstr(*ni);
|
|
}
|
|
return;
|
|
}
|
|
|
|
static const auto enabled = Stats::enabledAny() &&
|
|
getenv("HHVM_STATS_FAILEDINL");
|
|
if (enabled) {
|
|
m_hhbcTrans->profileFunctionEntry("FailedCandidate");
|
|
m_hhbcTrans->profileFailedInlShape(traceletShape(*i.calleeTrace));
|
|
}
|
|
}
|
|
|
|
HHIR_EMIT(FCall, numArgs, returnBcOffset, i.funcd);
|
|
}
|
|
|
|
void
|
|
Translator::translateFCallArray(const NormalizedInstruction& i) {
|
|
const Offset pcOffset = i.offset();
|
|
SrcKey next = nextSrcKey(i);
|
|
const Offset after = next.offset();
|
|
|
|
HHIR_EMIT(FCallArray, pcOffset, after);
|
|
}
|
|
|
|
void
|
|
Translator::translateNewTuple(const NormalizedInstruction& i) {
|
|
int numArgs = i.imm[0].u_IVA;
|
|
HHIR_EMIT(NewTuple, numArgs);
|
|
}
|
|
|
|
void
|
|
Translator::translateNewCol(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(NewCol, i.imm[0].u_IVA, i.imm[1].u_IVA);
|
|
}
|
|
|
|
void
|
|
Translator::translateColAddNewElemC(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(ColAddNewElemC);
|
|
}
|
|
|
|
void
|
|
Translator::translateColAddElemC(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(ColAddElemC);
|
|
}
|
|
|
|
void
|
|
Translator::translateStaticLocInit(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(StaticLocInit, i.imm[0].u_IVA, i.imm[1].u_SA);
|
|
}
|
|
|
|
// check class hierarchy and fail if no match
|
|
void
|
|
Translator::translateVerifyParamType(const NormalizedInstruction& i) {
|
|
int param = i.imm[0].u_IVA;
|
|
HHIR_EMIT(VerifyParamType, param);
|
|
}
|
|
|
|
void
|
|
Translator::translateInstanceOfD(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(InstanceOfD, (i.imm[0].u_SA));
|
|
}
|
|
|
|
void
|
|
Translator::translateIterInit(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(IterInit,
|
|
i.imm[0].u_IVA,
|
|
i.offset() + i.imm[1].u_BA,
|
|
i.imm[2].u_IVA);
|
|
}
|
|
|
|
void
|
|
Translator::translateIterInitK(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(IterInitK,
|
|
i.imm[0].u_IVA,
|
|
i.offset() + i.imm[1].u_BA,
|
|
i.imm[2].u_IVA,
|
|
i.imm[3].u_IVA);
|
|
}
|
|
|
|
void
|
|
Translator::translateIterNext(const NormalizedInstruction& i) {
|
|
|
|
HHIR_EMIT(IterNext,
|
|
i.imm[0].u_IVA,
|
|
i.offset() + i.imm[1].u_BA,
|
|
i.imm[2].u_IVA);
|
|
}
|
|
|
|
void
|
|
Translator::translateIterNextK(const NormalizedInstruction& i) {
|
|
|
|
HHIR_EMIT(IterNextK,
|
|
i.imm[0].u_IVA,
|
|
i.offset() + i.imm[1].u_BA,
|
|
i.imm[2].u_IVA,
|
|
i.imm[3].u_IVA);
|
|
}
|
|
|
|
void
|
|
Translator::translateWIterInit(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(WIterInit,
|
|
i.imm[0].u_IVA,
|
|
i.offset() + i.imm[1].u_BA,
|
|
i.imm[2].u_IVA);
|
|
}
|
|
|
|
void
|
|
Translator::translateWIterInitK(const NormalizedInstruction& i) {
|
|
HHIR_EMIT(WIterInitK,
|
|
i.imm[0].u_IVA,
|
|
i.offset() + i.imm[1].u_BA,
|
|
i.imm[2].u_IVA,
|
|
i.imm[3].u_IVA);
|
|
}
|
|
|
|
void
|
|
Translator::translateWIterNext(const NormalizedInstruction& i) {
|
|
|
|
HHIR_EMIT(WIterNext,
|
|
i.imm[0].u_IVA,
|
|
i.offset() + i.imm[1].u_BA,
|
|
i.imm[2].u_IVA);
|
|
}
|
|
|
|
void
|
|
Translator::translateWIterNextK(const NormalizedInstruction& i) {
|
|
|
|
HHIR_EMIT(WIterNextK,
|
|
i.imm[0].u_IVA,
|
|
i.offset() + i.imm[1].u_BA,
|
|
i.imm[2].u_IVA,
|
|
i.imm[3].u_IVA);
|
|
}
|
|
|
|
void
|
|
Translator::translateIterFree(const NormalizedInstruction& i) {
|
|
|
|
HHIR_EMIT(IterFree, i.imm[0].u_IVA);
|
|
}
|
|
|
|
void
|
|
Translator::translateDecodeCufIter(const NormalizedInstruction& i) {
|
|
|
|
HHIR_EMIT(DecodeCufIter, i.imm[0].u_IVA, i.offset() + i.imm[1].u_BA);
|
|
}
|
|
|
|
void
|
|
Translator::translateCIterFree(const NormalizedInstruction& i) {
|
|
|
|
HHIR_EMIT(CIterFree, i.imm[0].u_IVA);
|
|
}
|
|
|
|
// PSEUDOINSTR_DISPATCH is a switch() fragment that routes opcodes to their
|
|
// shared handlers, as per the PSEUDOINSTRS macro.
|
|
#define PSEUDOINSTR_DISPATCH(func) \
|
|
case OpBitAnd: \
|
|
case OpBitOr: \
|
|
case OpBitXor: \
|
|
case OpSub: \
|
|
case OpMul: \
|
|
func(BinaryArithOp, t, i) \
|
|
case OpSame: \
|
|
case OpNSame: \
|
|
func(SameOp, t, i) \
|
|
case OpEq: \
|
|
case OpNeq: \
|
|
func(EqOp, t, i) \
|
|
case OpLt: \
|
|
case OpLte: \
|
|
case OpGt: \
|
|
case OpGte: \
|
|
func(LtGtOp, t, i) \
|
|
case OpEmptyL: \
|
|
case OpCastBool: \
|
|
func(UnaryBooleanOp, t, i) \
|
|
case OpJmpZ: \
|
|
case OpJmpNZ: \
|
|
func(BranchOp, t, i) \
|
|
case OpSetL: \
|
|
case OpBindL: \
|
|
func(AssignToLocalOp, t, i) \
|
|
case OpFPassC: \
|
|
case OpFPassCW: \
|
|
case OpFPassCE: \
|
|
func(FPassCOp, t, i) \
|
|
case OpFPushCuf: \
|
|
case OpFPushCufF: \
|
|
case OpFPushCufSafe: \
|
|
func(FPushCufOp, t, i) \
|
|
case OpIssetL: \
|
|
case OpIsNullL: \
|
|
case OpIsStringL: \
|
|
case OpIsArrayL: \
|
|
case OpIsIntL: \
|
|
case OpIsObjectL: \
|
|
case OpIsBoolL: \
|
|
case OpIsDoubleL: \
|
|
case OpIsNullC: \
|
|
case OpIsStringC: \
|
|
case OpIsArrayC: \
|
|
case OpIsIntC: \
|
|
case OpIsObjectC: \
|
|
case OpIsBoolC: \
|
|
case OpIsDoubleC: \
|
|
func(CheckTypeOp, t, i)
|
|
|
|
// All vector instructions are handled by one HhbcTranslator method.
|
|
#define MII(instr, ...) \
|
|
void Translator::translate##instr##M(const NormalizedInstruction& ni) { \
|
|
m_hhbcTrans->emitMInstr(ni); \
|
|
}
|
|
MINSTRS
|
|
MII(FPass)
|
|
#undef MII
|
|
|
|
void
|
|
Translator::translateInstrDefault(const NormalizedInstruction& i) {
|
|
const char *opNames[] = {
|
|
#define O(name, imm, push, pop, flags) \
|
|
"Unimplemented" #name,
|
|
OPCODES
|
|
#undef O
|
|
};
|
|
const Opcode op = i.op();
|
|
|
|
HHIR_UNIMPLEMENTED_OP(opNames[op]);
|
|
assert(false);
|
|
}
|
|
|
|
void
|
|
Translator::translateInstrWork(const NormalizedInstruction& i) {
|
|
const Opcode op = i.op();
|
|
|
|
switch (op) {
|
|
#define CASE(iNm) \
|
|
case Op ## iNm: \
|
|
translate ## iNm(i); \
|
|
break;
|
|
#define TRANSLATE(a, b, c) translate ## a(c); break;
|
|
INSTRS
|
|
PSEUDOINSTR_DISPATCH(TRANSLATE)
|
|
#undef TRANSLATE
|
|
#undef CASE
|
|
default:
|
|
translateInstrDefault(i);
|
|
}
|
|
}
|
|
|
|
static bool isPop(Opcode opc) {
|
|
return opc == OpPopC || opc == OpPopR;
|
|
}
|
|
|
|
void
|
|
Translator::passPredictedAndInferredTypes(const NormalizedInstruction& i) {
|
|
if (!i.outStack || i.breaksTracelet) return;
|
|
|
|
NormalizedInstruction::OutputUse u = i.getOutputUsage(i.outStack);
|
|
JIT::Type jitType = JIT::Type::fromRuntimeType(i.outStack->rtt);
|
|
|
|
if (u == NormalizedInstruction::OutputInferred) {
|
|
TRACE(1, "irPassPredictedAndInferredTypes: output inferred as %s\n",
|
|
jitType.toString().c_str());
|
|
m_hhbcTrans->assertTypeStack(0, jitType);
|
|
|
|
} else if ((u == NormalizedInstruction::OutputUsed && i.outputPredicted)) {
|
|
// If the value was predicted statically by the front-end, it
|
|
// means that it's either the predicted type or null. In this
|
|
// case, if the predicted value is not ref-counted and it's simply
|
|
// going to be popped, then pass the information as an assertion
|
|
// that the type is not ref-counted. This avoid both generating a
|
|
// type check and dec-refing the value.
|
|
if (i.outputPredictionStatic && isPop(i.next->op()) &&
|
|
!jitType.isCounted()) {
|
|
TRACE(1, "irPassPredictedAndInferredTypes: output inferred as %s\n",
|
|
jitType.toString().c_str());
|
|
m_hhbcTrans->assertTypeStack(0, JIT::Type::Uncounted);
|
|
} else {
|
|
TRACE(1, "irPassPredictedAndInferredTypes: output predicted as %s\n",
|
|
jitType.toString().c_str());
|
|
m_hhbcTrans->checkTypeTopOfStack(jitType, i.next->offset());
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the number of cells that instruction i pops from the stack.
|
|
*/
|
|
static int getNumPopped(const NormalizedInstruction& i) {
|
|
return -getStackDelta(i)
|
|
// getStackDelta includes the output left on the stack, so discount it
|
|
+ (i.outStack ? 1 : 0)
|
|
// getStackDelta includes ActRec cells pushed on the stack, so discount them
|
|
+ (pushesActRec(i.op()) ? kNumActRecCells : 0);
|
|
}
|
|
|
|
/**
|
|
* Returns the number of Act-Rec cells that instruction i pushes onto the stack.
|
|
*/
|
|
static int getNumARCellsPushed(const NormalizedInstruction& i) {
|
|
return pushesActRec(i.op()) ? kNumActRecCells : 0;
|
|
}
|
|
|
|
void Translator::interpretInstr(const NormalizedInstruction& i) {
|
|
JIT::Type outStkType = JIT::Type::fromDynLocation(i.outStack);
|
|
int poppedCells = getNumPopped(i);
|
|
int arPushedCells = getNumARCellsPushed(i);
|
|
|
|
FTRACE(5, "HHIR: BC Instr {} Popped = {} ARCellsPushed = {}\n",
|
|
i.toString(), poppedCells, arPushedCells);
|
|
|
|
if (i.changesPC) {
|
|
m_hhbcTrans->emitInterpOneCF(poppedCells);
|
|
} else {
|
|
m_hhbcTrans->emitInterpOne(outStkType, poppedCells, arPushedCells);
|
|
if (i.outLocal) {
|
|
// HHIR tracks local values and types, so we should inform it about
|
|
// the new local type. This is done via an overriding type assertion.
|
|
assert(i.outLocal->isLocal());
|
|
int32_t locId = i.outLocal->location.offset;
|
|
JIT::Type newType = JIT::Type::fromRuntimeType(i.outLocal->rtt);
|
|
m_hhbcTrans->overrideTypeLocal(locId, newType);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Translator::translateInstr(const NormalizedInstruction& i) {
|
|
FTRACE(1, "translating: {}\n", opcodeToName(i.op()));
|
|
|
|
m_hhbcTrans->setBcOff(i.source.offset(),
|
|
i.breaksTracelet && !m_hhbcTrans->isInlining());
|
|
|
|
if (i.guardedThis) {
|
|
// Task #2067635: This should really generate an AssertThis
|
|
m_hhbcTrans->setThisAvailable();
|
|
}
|
|
|
|
if (moduleEnabled(HPHP::Trace::stats, 2)) {
|
|
m_hhbcTrans->emitIncStat(Stats::opcodeToIRPreStatCounter(i.op()), 1);
|
|
}
|
|
if (RuntimeOption::EnableInstructionCounts ||
|
|
moduleEnabled(HPHP::Trace::stats, 3)) {
|
|
// If the instruction takes a slow exit, the exit trace will
|
|
// decrement the post counter for that opcode.
|
|
m_hhbcTrans->emitIncStat(Stats::opcodeToIRPostStatCounter(i.op()),
|
|
1, true);
|
|
}
|
|
|
|
if (i.interp) {
|
|
interpretInstr(i);
|
|
} else {
|
|
translateInstrWork(i);
|
|
}
|
|
|
|
passPredictedAndInferredTypes(i);
|
|
}
|
|
|
|
void TranslatorX64::irAssertType(const Location& l,
|
|
const RuntimeType& rtt) {
|
|
if (rtt.isVagueValue()) return;
|
|
|
|
switch (l.space) {
|
|
case Location::Stack: {
|
|
// tx64LocPhysicalOffset returns positive offsets for stack values,
|
|
// relative to rVmSp
|
|
uint32_t stackOffset = locPhysicalOffset(l);
|
|
m_hhbcTrans->assertTypeStack(stackOffset,
|
|
JIT::Type::fromRuntimeType(rtt));
|
|
break;
|
|
}
|
|
case Location::Local: // Stack frame's registers; offset == local register
|
|
m_hhbcTrans->assertTypeLocal(l.offset, JIT::Type::fromRuntimeType(rtt));
|
|
break;
|
|
|
|
case Location::Invalid: // Unknown location
|
|
HHIR_UNIMPLEMENTED(Invalid);
|
|
break;
|
|
|
|
case Location::Iter: // Stack frame's iterators
|
|
HHIR_UNIMPLEMENTED(AssertType_Iter);
|
|
break;
|
|
|
|
case Location::Litstr: // Literal string pseudo-location
|
|
HHIR_UNIMPLEMENTED(AssertType_Litstr);
|
|
break;
|
|
|
|
case Location::Litint: // Literal int pseudo-location
|
|
HHIR_UNIMPLEMENTED(AssertType_Litint);
|
|
break;
|
|
|
|
case Location::This:
|
|
HHIR_UNIMPLEMENTED(AssertType_This);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void TranslatorX64::irEmitResolvedDeps(const ChangeMap& resolvedDeps) {
|
|
for (const auto dep : resolvedDeps) {
|
|
irAssertType(dep.first, dep.second->rtt);
|
|
}
|
|
}
|
|
|
|
static bool supportedInterpOne(const NormalizedInstruction* i) {
|
|
switch (i->op()) {
|
|
// Instructions that do function return are not supported yet
|
|
case OpRetC:
|
|
case OpRetV:
|
|
case OpContRetC:
|
|
case OpNativeImpl:
|
|
return false;
|
|
default:
|
|
return true;
|
|
}
|
|
}
|
|
|
|
TranslatorX64::TranslateResult
|
|
TranslatorX64::irTranslateTracelet(Tracelet& t,
|
|
const TCA start,
|
|
const TCA stubStart,
|
|
vector<TransBCMapping>* bcMap) {
|
|
auto transResult = Failure;
|
|
const SrcKey &sk = t.m_sk;
|
|
SrcRec& srcRec = *getSrcRec(sk);
|
|
assert(srcRec.inProgressTailJumps().size() == 0);
|
|
try {
|
|
// Don't translate if we have already reached the maximum # of
|
|
// translations for this tracelet
|
|
HHIR_UNIMPLEMENTED_WHEN(checkTranslationLimit(t.m_sk, srcRec),
|
|
TOO_MANY_TRANSLATIONS);
|
|
|
|
irEmitResolvedDeps(t.m_resolvedDeps);
|
|
emitGuardChecks(a, sk, t.m_dependencies, t.m_refDeps, srcRec);
|
|
|
|
dumpTranslationInfo(t, a.code.frontier);
|
|
|
|
// after guards, add a counter for the translation if requested
|
|
if (RuntimeOption::EvalJitTransCounters) {
|
|
m_hhbcTrans->emitIncTransCounter();
|
|
}
|
|
|
|
emitRB(a, RBTypeTraceletBody, t.m_sk);
|
|
Stats::emitInc(a, Stats::Instr_TC, t.m_numOpcodes);
|
|
recordBCInstr(OpTraceletGuard, a, start);
|
|
|
|
// Profiling on function entry.
|
|
if (m_curTrace->m_sk.offset() == curFunc()->base()) {
|
|
m_hhbcTrans->profileFunctionEntry("Normal");
|
|
}
|
|
|
|
/*
|
|
* Profiling on the shapes of tracelets that are whole functions.
|
|
* (These are the things we might consider trying to support
|
|
* inlining.)
|
|
*/
|
|
[&]{
|
|
static const bool enabled = Stats::enabledAny() &&
|
|
getenv("HHVM_STATS_FUNCSHAPE");
|
|
if (!enabled) return;
|
|
if (m_curTrace->m_sk.offset() != curFunc()->base()) return;
|
|
if (auto last = m_curTrace->m_instrStream.last) {
|
|
if (last->op() != OpRetC && last->op() != OpRetV) {
|
|
return;
|
|
}
|
|
}
|
|
m_hhbcTrans->profileSmallFunctionShape(traceletShape(*m_curTrace));
|
|
}();
|
|
|
|
// Translate each instruction in the tracelet
|
|
for (auto* ni = t.m_instrStream.first; ni; ni = ni->next) {
|
|
try {
|
|
SKTRACE(1, ni->source, "HHIR: translateInstr\n");
|
|
Nuller<NormalizedInstruction> niNuller(&m_curNI);
|
|
m_curNI = ni;
|
|
translateInstr(*ni);
|
|
} catch (JIT::FailedIRGen& fcg) {
|
|
// If we haven't tried interpreting ni yet, flag it to be interpreted
|
|
// and retry
|
|
if (!ni->interp && supportedInterpOne(ni)) {
|
|
ni->interp = true;
|
|
transResult = Retry;
|
|
}
|
|
break;
|
|
}
|
|
assert(ni->source.offset() >= curFunc()->base());
|
|
// We sometimes leave the tail of a truncated tracelet in place to aid
|
|
// analysis, but breaksTracelet is authoritative.
|
|
if (ni->breaksTracelet) break;
|
|
}
|
|
|
|
traceEnd();
|
|
if (transResult != Retry) {
|
|
try {
|
|
transResult = Success;
|
|
traceCodeGen(bcMap);
|
|
} catch (JIT::FailedCodeGen& fcg) {
|
|
// Code-gen failed. Search for the bytecode instruction that caused the
|
|
// problem, flag it to be interpreted, and retranslate the tracelet.
|
|
NormalizedInstruction *ni;
|
|
for (ni = t.m_instrStream.first; ni; ni = ni->next) {
|
|
if (ni->source.offset() == fcg.bcOff) break;
|
|
}
|
|
if (ni && !ni->interp && supportedInterpOne(ni)) {
|
|
ni->interp = true;
|
|
transResult = Retry;
|
|
TRACE(1, "HHIR: RETRY Translation %d: will interpOne BC instr %s "
|
|
"after failing to code-gen \n\n",
|
|
getCurrentTransID(), ni->toString().c_str());
|
|
} else {
|
|
throw fcg;
|
|
}
|
|
}
|
|
if (transResult == Success) {
|
|
TRACE(1, "HHIR: SUCCEEDED to generate code for Translation %d\n\n\n",
|
|
getCurrentTransID());
|
|
}
|
|
}
|
|
} catch (JIT::FailedCodeGen& fcg) {
|
|
transResult = Failure;
|
|
TRACE(1, "HHIR: FAILED to generate code for Translation %d "
|
|
"@ %s:%d (%s)\n", getCurrentTransID(),
|
|
fcg.file, fcg.line, fcg.func);
|
|
// HHIR:TODO Remove extra TRACE and adjust tools
|
|
TRACE(1, "HHIR: FAILED to translate @ %s:%d (%s)\n",
|
|
fcg.file, fcg.line, fcg.func);
|
|
} catch (JIT::FailedIRGen& x) {
|
|
transResult = Failure;
|
|
TRACE(1, "HHIR: FAILED to translate @ %s:%d (%s)\n",
|
|
x.file, x.line, x.func);
|
|
} catch (TranslationFailedExc& tfe) {
|
|
not_reached();
|
|
} catch (const FailedAssertion& fa) {
|
|
fa.print();
|
|
StackTraceNoHeap::AddExtraLogging(
|
|
"Assertion failure",
|
|
folly::format("{}\n\nActive Trace:\n{}\n",
|
|
fa.summary, m_hhbcTrans->trace()->toString()).str());
|
|
abort();
|
|
} catch (const std::exception& e) {
|
|
transResult = Failure;
|
|
FTRACE(1, "HHIR: FAILED with exception: {}\n", e.what());
|
|
assert(0);
|
|
}
|
|
return transResult;
|
|
}
|
|
|
|
void Translator::traceStart(Offset bcStartOffset) {
|
|
assert(!m_irFactory);
|
|
|
|
Cell* fp = vmfp();
|
|
if (curFunc()->isGenerator()) {
|
|
fp = (Cell*)Stack::generatorStackBase((ActRec*)fp);
|
|
}
|
|
FTRACE(1, "{}{:-^40}{}\n",
|
|
color(ANSI_COLOR_BLACK, ANSI_BGCOLOR_GREEN),
|
|
" HHIR during translation ",
|
|
color(ANSI_COLOR_END));
|
|
|
|
m_irFactory.reset(new JIT::IRFactory());
|
|
m_hhbcTrans.reset(new JIT::HhbcTranslator(
|
|
*m_irFactory, bcStartOffset, fp - vmsp(), curFunc()));
|
|
}
|
|
|
|
void Translator::traceEnd() {
|
|
m_hhbcTrans->end();
|
|
FTRACE(1, "{}{:-^40}{}\n",
|
|
color(ANSI_COLOR_BLACK, ANSI_BGCOLOR_GREEN),
|
|
"",
|
|
color(ANSI_COLOR_END));
|
|
}
|
|
|
|
void TranslatorX64::traceCodeGen(vector<TransBCMapping>* bcMap) {
|
|
using namespace JIT;
|
|
|
|
HPHP::JIT::IRTrace* trace = m_hhbcTrans->trace();
|
|
auto finishPass = [&](const char* msg, int level,
|
|
const RegAllocInfo* regs = nullptr,
|
|
const LifetimeInfo* lifetime = nullptr) {
|
|
dumpTrace(level, trace, msg, regs, lifetime);
|
|
assert(checkCfg(trace, *m_irFactory));
|
|
};
|
|
|
|
finishPass(" after initial translation ", kIRLevel);
|
|
optimizeTrace(trace, m_hhbcTrans->traceBuilder());
|
|
finishPass(" after optimizing ", kOptLevel);
|
|
|
|
auto* factory = m_irFactory.get();
|
|
if (dumpIREnabled() || RuntimeOption::EvalJitCompareHHIR) {
|
|
LifetimeInfo lifetime(factory);
|
|
RegAllocInfo regs = allocRegsForTrace(trace, factory, &lifetime);
|
|
finishPass(" after reg alloc ", kRegAllocLevel, ®s, &lifetime);
|
|
assert(checkRegisters(trace, *factory, regs));
|
|
AsmInfo ai(factory);
|
|
genCodeForTrace(trace, a, astubs, factory, bcMap, this, regs,
|
|
&lifetime, &ai);
|
|
if (RuntimeOption::EvalJitCompareHHIR) {
|
|
std::ostringstream out;
|
|
dumpTraceImpl(trace, out, ®s, &lifetime, &ai);
|
|
} else {
|
|
dumpTrace(kCodeGenLevel, trace, " after code gen ", ®s,
|
|
&lifetime, &ai);
|
|
}
|
|
} else {
|
|
RegAllocInfo regs = allocRegsForTrace(trace, factory);
|
|
finishPass(" after reg alloc ", kRegAllocLevel);
|
|
assert(checkRegisters(trace, *factory, regs));
|
|
genCodeForTrace(trace, a, astubs, factory, bcMap, this, regs);
|
|
}
|
|
|
|
m_numHHIRTrans++;
|
|
traceFree();
|
|
}
|
|
|
|
void Translator::traceFree() {
|
|
FTRACE(1, "HHIR free: arena size: {}\n",
|
|
m_irFactory->arena().size());
|
|
m_hhbcTrans.reset();
|
|
m_irFactory.reset();
|
|
}
|
|
|
|
}}
|