ftl/FTLOutput.h

   1 /*
   2  * Copyright (C) 2013, 2014 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #ifndef FTLOutput_h
  27 #define FTLOutput_h
  28
  29 #if ENABLE(FTL_JIT)
  30
  31 #include "DFGCommon.h"
  32 #include "FTLAbbreviations.h"
  33 #include "FTLAbstractHeapRepository.h"
  34 #include "FTLCommonValues.h"
  35 #include "FTLIntrinsicRepository.h"
  36 #include "FTLState.h"
  37 #include "FTLSwitchCase.h"
  38 #include "FTLTypedPointer.h"
  39 #include "FTLWeight.h"
  40 #include "FTLWeightedTarget.h"
  41 #include <wtf/StringPrintStream.h>
  42
  43 namespace JSC { namespace FTL {
  44
  45 // Idiomatic LLVM IR builder specifically designed for FTL. This uses our own lowering
  46 // terminology, and has some of its own notions:
  47 //
  48 // We say that a "reference" is what LLVM considers to be a "pointer". That is, it has
  49 // an element type and can be passed directly to memory access instructions. Note that
  50 // broadly speaking the users of FTL::Output should only use references for alloca'd
  51 // slots for mutable local variables.
  52 //
  53 // We say that a "pointer" is what LLVM considers to be a pointer-width integer.
  54 //
  55 // We say that a "typed pointer" is a pointer that carries TBAA meta-data (i.e. an
  56 // AbstractHeap). These should usually not have further computation performed on them
  57 // prior to access, though there are exceptions (like offsetting into the payload of
  58 // a typed pointer to a JSValue).
  59 //
  60 // We say that "get" and "set" are what LLVM considers to be "load" and "store". Get
  61 // and set take references.
  62 //
  63 // We say that "load" and "store" are operations that take a typed pointer. These
  64 // operations translate the pointer into a reference (or, a pointer in LLVM-speak),
  65 // emit get or set on the reference (or, load and store in LLVM-speak), and apply the
  66 // TBAA meta-data to the get or set.
  67
  68 enum Scale { ScaleOne, ScaleTwo, ScaleFour, ScaleEight, ScalePtr };
  69
  70 class Output : public IntrinsicRepository {
  71 public:
  72     Output(LContext);
  73     ~Output();
  74
  75     void initialize(LModule, LValue, AbstractHeapRepository&);
  76
  77     LBasicBlock insertNewBlocksBefore(LBasicBlock nextBlock)
  78     {
  79         LBasicBlock lastNextBlock = m_nextBlock;
  80         m_nextBlock = nextBlock;
  81         return lastNextBlock;
  82     }
  83
  84     LBasicBlock appendTo(LBasicBlock, LBasicBlock nextBlock);
  85
  86     void appendTo(LBasicBlock);
  87
  88     LBasicBlock newBlock(const char* name = "");
  89
  90     LValue param(unsigned index) { return getParam(m_function, index); }
  91     LValue constBool(bool value) { return constInt(boolean, value); }
  92     LValue constInt8(int8_t value) { return constInt(int8, value); }
  93     LValue constInt32(int32_t value) { return constInt(int32, value); }
  94     template<typename T>
  95     LValue constIntPtr(T* value) { return constInt(intPtr, bitwise_cast<intptr_t>(value)); }
  96     template<typename T>
  97     LValue constIntPtr(T value) { return constInt(intPtr, static_cast<intptr_t>(value)); }
  98     LValue constInt64(int64_t value) { return constInt(int64, value); }
  99     LValue constDouble(double value) { return constReal(doubleType, value); }
 100
 101     LValue phi(LType type) { return buildPhi(m_builder, type); }
 102     template<typename... Params>
 103     LValue phi(LType type, ValueFromBlock value, Params... theRest)
 104     {
 105         LValue result = phi(type, theRest...);
 106         addIncoming(result, value);
 107         return result;
 108     }
 109     template<typename VectorType>
 110     LValue phi(LType type, const VectorType& vector)
 111     {
 112         LValue result = phi(type);
 113         for (unsigned i = 0; i < vector.size(); ++i)
 114             addIncoming(result, vector[i]);
 115         return result;
 116     }
 117
 118     LValue add(LValue left, LValue right) { return buildAdd(m_builder, left, right); }
 119     LValue sub(LValue left, LValue right) { return buildSub(m_builder, left, right); }
 120     LValue mul(LValue left, LValue right) { return buildMul(m_builder, left, right); }
 121     LValue div(LValue left, LValue right) { return buildDiv(m_builder, left, right); }
 122     LValue rem(LValue left, LValue right) { return buildRem(m_builder, left, right); }
 123     LValue neg(LValue value) { return buildNeg(m_builder, value); }
 124
 125     LValue doubleAdd(LValue left, LValue right) { return buildFAdd(m_builder, left, right); }
 126     LValue doubleSub(LValue left, LValue right) { return buildFSub(m_builder, left, right); }
 127     LValue doubleMul(LValue left, LValue right) { return buildFMul(m_builder, left, right); }
 128     LValue doubleDiv(LValue left, LValue right) { return buildFDiv(m_builder, left, right); }
 129     LValue doubleRem(LValue left, LValue right) { return buildFRem(m_builder, left, right); }
 130     LValue doubleNeg(LValue value) { return buildFNeg(m_builder, value); }
 131
 132     LValue bitAnd(LValue left, LValue right) { return buildAnd(m_builder, left, right); }
 133     LValue bitOr(LValue left, LValue right) { return buildOr(m_builder, left, right); }
 134     LValue bitXor(LValue left, LValue right) { return buildXor(m_builder, left, right); }
 135     LValue shl(LValue left, LValue right) { return buildShl(m_builder, left, right); }
 136     LValue aShr(LValue left, LValue right) { return buildAShr(m_builder, left, right); }
 137     LValue lShr(LValue left, LValue right) { return buildLShr(m_builder, left, right); }
 138     LValue bitNot(LValue value) { return buildNot(m_builder, value); }
 139
 140     LValue insertElement(LValue vector, LValue element, LValue index) { return buildInsertElement(m_builder, vector, element, index); }
 141
 142     LValue addWithOverflow32(LValue left, LValue right)
 143     {
 144         return call(addWithOverflow32Intrinsic(), left, right);
 145     }
 146     LValue subWithOverflow32(LValue left, LValue right)
 147     {
 148         return call(subWithOverflow32Intrinsic(), left, right);
 149     }
 150     LValue mulWithOverflow32(LValue left, LValue right)
 151     {
 152         return call(mulWithOverflow32Intrinsic(), left, right);
 153     }
 154     LValue addWithOverflow64(LValue left, LValue right)
 155     {
 156         return call(addWithOverflow64Intrinsic(), left, right);
 157     }
 158     LValue subWithOverflow64(LValue left, LValue right)
 159     {
 160         return call(subWithOverflow64Intrinsic(), left, right);
 161     }
 162     LValue mulWithOverflow64(LValue left, LValue right)
 163     {
 164         return call(mulWithOverflow64Intrinsic(), left, right);
 165     }
 166     LValue doubleAbs(LValue value)
 167     {
 168         return call(doubleAbsIntrinsic(), value);
 169     }
 170
 171     LValue doubleSin(LValue value)
 172     {
 173         return call(doubleSinIntrinsic(), value);
 174     }
 175     LValue doubleCos(LValue value)
 176     {
 177         return call(doubleCosIntrinsic(), value);
 178     }
 179
 180     LValue doubleSqrt(LValue value)
 181     {
 182         return call(doubleSqrtIntrinsic(), value);
 183     }
 184
 185     static bool hasSensibleDoubleToInt() { return isX86(); }
 186     LValue sensibleDoubleToInt(LValue);
 187
 188     LValue signExt(LValue value, LType type) { return buildSExt(m_builder, value, type); }
 189     LValue zeroExt(LValue value, LType type) { return buildZExt(m_builder, value, type); }
 190     LValue fpToInt(LValue value, LType type) { return buildFPToSI(m_builder, value, type); }
 191     LValue fpToUInt(LValue value, LType type) { return buildFPToUI(m_builder, value, type); }
 192     LValue fpToInt32(LValue value) { return fpToInt(value, int32); }
 193     LValue fpToUInt32(LValue value) { return fpToUInt(value, int32); }
 194     LValue intToFP(LValue value, LType type) { return buildSIToFP(m_builder, value, type); }
 195     LValue intToDouble(LValue value) { return intToFP(value, doubleType); }
 196     LValue unsignedToFP(LValue value, LType type) { return buildUIToFP(m_builder, value, type); }
 197     LValue unsignedToDouble(LValue value) { return unsignedToFP(value, doubleType); }
 198     LValue intCast(LValue value, LType type) { return buildIntCast(m_builder, value, type); }
 199     LValue castToInt32(LValue value) { return intCast(value, int32); }
 200     LValue fpCast(LValue value, LType type) { return buildFPCast(m_builder, value, type); }
 201     LValue intToPtr(LValue value, LType type) { return buildIntToPtr(m_builder, value, type); }
 202     LValue ptrToInt(LValue value, LType type) { return buildPtrToInt(m_builder, value, type); }
 203     LValue bitCast(LValue value, LType type) { return buildBitCast(m_builder, value, type); }
 204
 205     LValue alloca(LType type) { return buildAlloca(m_builder, type); }
 206
 207     // Access the value of an alloca. Also used as a low-level implementation primitive for
 208     // load(). Never use this to load from "pointers" in the FTL sense, since FTL pointers
 209     // are actually integers. This requires an LLVM pointer. Broadly speaking, you don't
 210     // have any LLVM pointers even if you really think you do. A TypedPointer is not an
 211     // LLVM pointer. See comment block at top of this file to understand the distinction
 212     // between LLVM pointers, FTL pointers, and FTL references.
 213     LValue get(LValue reference) { return buildLoad(m_builder, reference); }
 214     // Similar to get() but for storing to the value in an alloca.
 215     LValue set(LValue value, LValue reference) { return buildStore(m_builder, value, reference); }
 216
 217     LValue load(TypedPointer, LType refType);
 218     void store(LValue, TypedPointer, LType refType);
 219
 220     LValue load8(TypedPointer pointer) { return load(pointer, ref8); }
 221     LValue load16(TypedPointer pointer) { return load(pointer, ref16); }
 222     LValue load32(TypedPointer pointer) { return load(pointer, ref32); }
 223     LValue load64(TypedPointer pointer) { return load(pointer, ref64); }
 224     LValue loadPtr(TypedPointer pointer) { return load(pointer, refPtr); }
 225     LValue loadFloat(TypedPointer pointer) { return load(pointer, refFloat); }
 226     LValue loadDouble(TypedPointer pointer) { return load(pointer, refDouble); }
 227     void store8(LValue value, TypedPointer pointer) { store(value, pointer, ref8); }
 228     void store16(LValue value, TypedPointer pointer) { store(value, pointer, ref16); }
 229     void store32(LValue value, TypedPointer pointer) { store(value, pointer, ref32); }
 230     void store64(LValue value, TypedPointer pointer) { store(value, pointer, ref64); }
 231     void storePtr(LValue value, TypedPointer pointer) { store(value, pointer, refPtr); }
 232     void storeFloat(LValue value, TypedPointer pointer) { store(value, pointer, refFloat); }
 233     void storeDouble(LValue value, TypedPointer pointer) { store(value, pointer, refDouble); }
 234
 235     LValue addPtr(LValue value, ptrdiff_t immediate = 0)
 236     {
 237         if (!immediate)
 238             return value;
 239         return add(value, constIntPtr(immediate));
 240     }
 241
 242     // Construct an address by offsetting base by the requested amount and ascribing
 243     // the requested abstract heap to it.
 244     TypedPointer address(const AbstractHeap& heap, LValue base, ptrdiff_t offset = 0)
 245     {
 246         return TypedPointer(heap, addPtr(base, offset));
 247     }
 248     // Construct an address by offsetting base by the amount specified by the field,
 249     // and optionally an additional amount (use this with care), and then creating
 250     // a TypedPointer with the given field as the heap.
 251     TypedPointer address(LValue base, const AbstractField& field, ptrdiff_t offset = 0)
 252     {
 253         return address(field, base, offset + field.offset());
 254     }
 255
 256     LValue baseIndex(LValue base, LValue index, Scale, ptrdiff_t offset = 0);
 257
 258     TypedPointer baseIndex(const AbstractHeap& heap, LValue base, LValue index, Scale scale, ptrdiff_t offset = 0)
 259     {
 260         return TypedPointer(heap, baseIndex(base, index, scale, offset));
 261     }
 262     TypedPointer baseIndex(IndexedAbstractHeap& heap, LValue base, LValue index, JSValue indexAsConstant = JSValue(), ptrdiff_t offset = 0)
 263     {
 264         return heap.baseIndex(*this, base, index, indexAsConstant, offset);
 265     }
 266
 267     TypedPointer absolute(void* address)
 268     {
 269         return TypedPointer(m_heaps->absolute[address], constIntPtr(address));
 270     }
 271
 272     LValue load8(LValue base, const AbstractField& field) { return load8(address(base, field)); }
 273     LValue load16(LValue base, const AbstractField& field) { return load16(address(base, field)); }
 274     LValue load32(LValue base, const AbstractField& field) { return load32(address(base, field)); }
 275     LValue load64(LValue base, const AbstractField& field) { return load64(address(base, field)); }
 276     LValue loadPtr(LValue base, const AbstractField& field) { return loadPtr(address(base, field)); }
 277     LValue loadDouble(LValue base, const AbstractField& field) { return loadDouble(address(base, field)); }
 278     void store8(LValue value, LValue base, const AbstractField& field) { store8(value, address(base, field)); }
 279     void store32(LValue value, LValue base, const AbstractField& field) { store32(value, address(base, field)); }
 280     void store64(LValue value, LValue base, const AbstractField& field) { store64(value, address(base, field)); }
 281     void storePtr(LValue value, LValue base, const AbstractField& field) { storePtr(value, address(base, field)); }
 282     void storeDouble(LValue value, LValue base, const AbstractField& field) { storeDouble(value, address(base, field)); }
 283
 284     void ascribeRange(LValue loadInstruction, const ValueRange& range)
 285     {
 286         range.decorateInstruction(m_context, loadInstruction, rangeKind);
 287     }
 288
 289     LValue nonNegative32(LValue loadInstruction)
 290     {
 291         ascribeRange(loadInstruction, nonNegativeInt32);
 292         return loadInstruction;
 293     }
 294
 295     LValue load32NonNegative(TypedPointer pointer) { return nonNegative32(load32(pointer)); }
 296     LValue load32NonNegative(LValue base, const AbstractField& field) { return nonNegative32(load32(base, field)); }
 297
 298     LValue icmp(LIntPredicate cond, LValue left, LValue right) { return buildICmp(m_builder, cond, left, right); }
 299     LValue equal(LValue left, LValue right) { return icmp(LLVMIntEQ, left, right); }
 300     LValue notEqual(LValue left, LValue right) { return icmp(LLVMIntNE, left, right); }
 301     LValue above(LValue left, LValue right) { return icmp(LLVMIntUGT, left, right); }
 302     LValue aboveOrEqual(LValue left, LValue right) { return icmp(LLVMIntUGE, left, right); }
 303     LValue below(LValue left, LValue right) { return icmp(LLVMIntULT, left, right); }
 304     LValue belowOrEqual(LValue left, LValue right) { return icmp(LLVMIntULE, left, right); }
 305     LValue greaterThan(LValue left, LValue right) { return icmp(LLVMIntSGT, left, right); }
 306     LValue greaterThanOrEqual(LValue left, LValue right) { return icmp(LLVMIntSGE, left, right); }
 307     LValue lessThan(LValue left, LValue right) { return icmp(LLVMIntSLT, left, right); }
 308     LValue lessThanOrEqual(LValue left, LValue right) { return icmp(LLVMIntSLE, left, right); }
 309
 310     LValue fcmp(LRealPredicate cond, LValue left, LValue right) { return buildFCmp(m_builder, cond, left, right); }
 311     LValue doubleEqual(LValue left, LValue right) { return fcmp(LLVMRealOEQ, left, right); }
 312     LValue doubleNotEqualOrUnordered(LValue left, LValue right) { return fcmp(LLVMRealUNE, left, right); }
 313     LValue doubleLessThan(LValue left, LValue right) { return fcmp(LLVMRealOLT, left, right); }
 314     LValue doubleLessThanOrEqual(LValue left, LValue right) { return fcmp(LLVMRealOLE, left, right); }
 315     LValue doubleGreaterThan(LValue left, LValue right) { return fcmp(LLVMRealOGT, left, right); }
 316     LValue doubleGreaterThanOrEqual(LValue left, LValue right) { return fcmp(LLVMRealOGE, left, right); }
 317     LValue doubleEqualOrUnordered(LValue left, LValue right) { return fcmp(LLVMRealUEQ, left, right); }
 318     LValue doubleNotEqual(LValue left, LValue right) { return fcmp(LLVMRealONE, left, right); }
 319     LValue doubleLessThanOrUnordered(LValue left, LValue right) { return fcmp(LLVMRealULT, left, right); }
 320     LValue doubleLessThanOrEqualOrUnordered(LValue left, LValue right) { return fcmp(LLVMRealULE, left, right); }
 321     LValue doubleGreaterThanOrUnordered(LValue left, LValue right) { return fcmp(LLVMRealUGT, left, right); }
 322     LValue doubleGreaterThanOrEqualOrUnordered(LValue left, LValue right) { return fcmp(LLVMRealUGE, left, right); }
 323
 324     LValue isZero8(LValue value) { return equal(value, int8Zero); }
 325     LValue notZero8(LValue value) { return notEqual(value, int8Zero); }
 326     LValue isZero32(LValue value) { return equal(value, int32Zero); }
 327     LValue notZero32(LValue value) { return notEqual(value, int32Zero); }
 328     LValue isZero64(LValue value) { return equal(value, int64Zero); }
 329     LValue notZero64(LValue value) { return notEqual(value, int64Zero); }
 330     LValue isNull(LValue value) { return equal(value, intPtrZero); }
 331     LValue notNull(LValue value) { return notEqual(value, intPtrZero); }
 332
 333     LValue testIsZero8(LValue value, LValue mask) { return isZero8(bitAnd(value, mask)); }
 334     LValue testNonZero8(LValue value, LValue mask) { return notZero8(bitAnd(value, mask)); }
 335     LValue testIsZero32(LValue value, LValue mask) { return isZero32(bitAnd(value, mask)); }
 336     LValue testNonZero32(LValue value, LValue mask) { return notZero32(bitAnd(value, mask)); }
 337     LValue testIsZero64(LValue value, LValue mask) { return isZero64(bitAnd(value, mask)); }
 338     LValue testNonZero64(LValue value, LValue mask) { return notZero64(bitAnd(value, mask)); }
 339
 340     LValue select(LValue value, LValue taken, LValue notTaken) { return buildSelect(m_builder, value, taken, notTaken); }
 341     LValue extractValue(LValue aggVal, unsigned index) { return buildExtractValue(m_builder, aggVal, index); }
 342
 343     LValue fence(LAtomicOrdering ordering = LLVMAtomicOrderingSequentiallyConsistent, SynchronizationScope scope = CrossThread) { return buildFence(m_builder, ordering, scope); }
 344     LValue fenceAcqRel() { return fence(LLVMAtomicOrderingAcquireRelease); }
 345
 346     template<typename VectorType>
 347     LValue call(LValue function, const VectorType& vector) { return buildCall(m_builder, function, vector); }
 348     LValue call(LValue function) { return buildCall(m_builder, function); }
 349     LValue call(LValue function, LValue arg1) { return buildCall(m_builder, function, arg1); }
 350     LValue call(LValue function, LValue arg1, LValue arg2) { return buildCall(m_builder, function, arg1, arg2); }
 351     LValue call(LValue function, LValue arg1, LValue arg2, LValue arg3) { return buildCall(m_builder, function, arg1, arg2, arg3); }
 352     LValue call(LValue function, LValue arg1, LValue arg2, LValue arg3, LValue arg4) { return buildCall(m_builder, function, arg1, arg2, arg3, arg4); }
 353     LValue call(LValue function, LValue arg1, LValue arg2, LValue arg3, LValue arg4, LValue arg5) { return buildCall(m_builder, function, arg1, arg2, arg3, arg4, arg5); }
 354     LValue call(LValue function, LValue arg1, LValue arg2, LValue arg3, LValue arg4, LValue arg5, LValue arg6) { return buildCall(m_builder, function, arg1, arg2, arg3, arg4, arg5, arg6); }
 355     LValue call(LValue function, LValue arg1, LValue arg2, LValue arg3, LValue arg4, LValue arg5, LValue arg6, LValue arg7) { return buildCall(m_builder, function, arg1, arg2, arg3, arg4, arg5, arg6, arg7); }
 356     LValue call(LValue function, LValue arg1, LValue arg2, LValue arg3, LValue arg4, LValue arg5, LValue arg6, LValue arg7, LValue arg8) { return buildCall(m_builder, function, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8); }
 357
 358     template<typename FunctionType>
 359     LValue operation(FunctionType function)
 360     {
 361         return intToPtr(constIntPtr(function), pointerType(operationType(function)));
 362     }
 363
 364     void jump(LBasicBlock destination) { buildBr(m_builder, destination); }
 365     void branch(LValue condition, LBasicBlock taken, Weight takenWeight, LBasicBlock notTaken, Weight notTakenWeight);
 366     void branch(LValue condition, WeightedTarget taken, WeightedTarget notTaken)
 367     {
 368         branch(condition, taken.target(), taken.weight(), notTaken.target(), notTaken.weight());
 369     }
 370
 371     template<typename VectorType>
 372     void switchInstruction(LValue value, const VectorType& cases, LBasicBlock fallThrough, Weight fallThroughWeight)
 373     {
 374         LValue inst = buildSwitch(m_builder, value, cases, fallThrough);
 375
 376         double total = 0;
 377         if (!fallThroughWeight)
 378             return;
 379         total += fallThroughWeight.value();
 380         for (unsigned i = cases.size(); i--;) {
 381             if (!cases[i].weight())
 382                 return;
 383             total += cases[i].weight().value();
 384         }
 385
 386         Vector<LValue> mdArgs;
 387         mdArgs.append(branchWeights);
 388         mdArgs.append(constInt32(fallThroughWeight.scaleToTotal(total)));
 389         for (unsigned i = 0; i < cases.size(); ++i)
 390             mdArgs.append(constInt32(cases[i].weight().scaleToTotal(total)));
 391
 392         setMetadata(inst, profKind, mdNode(m_context, mdArgs));
 393     }
 394
 395     void ret(LValue value) { buildRet(m_builder, value); }
 396
 397     void unreachable() { buildUnreachable(m_builder); }
 398
 399     void trap()
 400     {
 401         call(trapIntrinsic());
 402     }
 403
 404     void crashNonTerminal();
 405
 406     void crash()
 407     {
 408         crashNonTerminal();
 409         unreachable();
 410     }
 411
 412     ValueFromBlock anchor(LValue value)
 413     {
 414         return ValueFromBlock(value, m_block);
 415     }
 416
 417     LValue m_function;
 418     AbstractHeapRepository* m_heaps;
 419     LBuilder m_builder;
 420     LBasicBlock m_block;
 421     LBasicBlock m_nextBlock;
 422 };
 423
 424 #define FTL_NEW_BLOCK(output, nameArguments) \
 425     (LIKELY(!verboseCompilationEnabled()) \
 426     ? (output).newBlock() \
 427     : (output).newBlock((toCString nameArguments).data()))
 428
 429 } } // namespace JSC::FTL
 430
 431 #endif // ENABLE(FTL_JIT)
 432
 433 #endif // FTLOutput_h
 434