[stubs] Introduce a proper ToBooleanStub.

src/crankshaft/arm64/lithium-codegen-arm64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/crankshaft/arm64/lithium-codegen-arm64.h"
 
 #include "src/arm64/frames-arm64.h"
 #include "src/base/bits.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
@@ skipping 1713 matching lines @@
       __ Ldr(double_scratch(), FieldMemOperand(value,
                                                HeapNumber::kValueOffset));
       // Test the double value. Zero and NaN are false.
       EmitBranchIfNonZeroNumber(instr, double_scratch(), double_scratch());
     } else if (type.IsString()) {
       DCHECK(!info()->IsStub());
       Register temp = ToRegister(instr->temp1());
       __ Ldr(temp, FieldMemOperand(value, String::kLengthOffset));
       EmitCompareAndBranch(instr, ne, temp, 0);
     } else {
-      ToBooleanStub::Types expected = instr->hydrogen()->expected_input_types();
+      ToBooleanICStub::Types expected =
+          instr->hydrogen()->expected_input_types();
       // Avoid deopts in the case where we've never executed this path before.
-      if (expected.IsEmpty()) expected = ToBooleanStub::Types::Generic();
+      if (expected.IsEmpty()) expected = ToBooleanICStub::Types::Generic();
 
-      if (expected.Contains(ToBooleanStub::UNDEFINED)) {
+      if (expected.Contains(ToBooleanICStub::UNDEFINED)) {
         // undefined -> false.
         __ JumpIfRoot(
             value, Heap::kUndefinedValueRootIndex, false_label);
       }
 
-      if (expected.Contains(ToBooleanStub::BOOLEAN)) {
+      if (expected.Contains(ToBooleanICStub::BOOLEAN)) {
         // Boolean -> its value.
         __ JumpIfRoot(
             value, Heap::kTrueValueRootIndex, true_label);
         __ JumpIfRoot(
             value, Heap::kFalseValueRootIndex, false_label);
       }
 
-      if (expected.Contains(ToBooleanStub::NULL_TYPE)) {
+      if (expected.Contains(ToBooleanICStub::NULL_TYPE)) {
         // 'null' -> false.
         __ JumpIfRoot(
             value, Heap::kNullValueRootIndex, false_label);
       }
 
-      if (expected.Contains(ToBooleanStub::SMI)) {
+      if (expected.Contains(ToBooleanICStub::SMI)) {
         // Smis: 0 -> false, all other -> true.
         DCHECK(Smi::FromInt(0) == 0);
         __ Cbz(value, false_label);
         __ JumpIfSmi(value, true_label);
       } else if (expected.NeedsMap()) {
         // If we need a map later and have a smi, deopt.
         DeoptimizeIfSmi(value, instr, Deoptimizer::kSmi);
       }
 
       Register map = NoReg;
       Register scratch = NoReg;
 
       if (expected.NeedsMap()) {
         DCHECK((instr->temp1() != NULL) && (instr->temp2() != NULL));
         map = ToRegister(instr->temp1());
         scratch = ToRegister(instr->temp2());
 
         __ Ldr(map, FieldMemOperand(value, HeapObject::kMapOffset));
 
         if (expected.CanBeUndetectable()) {
           // Undetectable -> false.
           __ Ldrb(scratch, FieldMemOperand(map, Map::kBitFieldOffset));
           __ TestAndBranchIfAnySet(
               scratch, 1 << Map::kIsUndetectable, false_label);
         }
       }
 
-      if (expected.Contains(ToBooleanStub::SPEC_OBJECT)) {
+      if (expected.Contains(ToBooleanICStub::SPEC_OBJECT)) {
         // spec object -> true.
         __ CompareInstanceType(map, scratch, FIRST_JS_RECEIVER_TYPE);
         __ B(ge, true_label);
       }
 
-      if (expected.Contains(ToBooleanStub::STRING)) {
+      if (expected.Contains(ToBooleanICStub::STRING)) {
         // String value -> false iff empty.
         Label not_string;
         __ CompareInstanceType(map, scratch, FIRST_NONSTRING_TYPE);
         __ B(ge, &not_string);
         __ Ldr(scratch, FieldMemOperand(value, String::kLengthOffset));
         __ Cbz(scratch, false_label);
         __ B(true_label);
         __ Bind(&not_string);
       }
 
-      if (expected.Contains(ToBooleanStub::SYMBOL)) {
+      if (expected.Contains(ToBooleanICStub::SYMBOL)) {
         // Symbol value -> true.
         __ CompareInstanceType(map, scratch, SYMBOL_TYPE);
         __ B(eq, true_label);
       }
 
-      if (expected.Contains(ToBooleanStub::SIMD_VALUE)) {
+      if (expected.Contains(ToBooleanICStub::SIMD_VALUE)) {
         // SIMD value -> true.
         __ CompareInstanceType(map, scratch, SIMD128_VALUE_TYPE);
         __ B(eq, true_label);
       }
 
-      if (expected.Contains(ToBooleanStub::HEAP_NUMBER)) {
+      if (expected.Contains(ToBooleanICStub::HEAP_NUMBER)) {
         Label not_heap_number;
         __ JumpIfNotRoot(map, Heap::kHeapNumberMapRootIndex, &not_heap_number);
 
         __ Ldr(double_scratch(),
                FieldMemOperand(value, HeapNumber::kValueOffset));
         __ Fcmp(double_scratch(), 0.0);
         // If we got a NaN (overflow bit is set), jump to the false branch.
         __ B(vs, false_label);
         __ B(eq, false_label);
         __ B(true_label);
@@ skipping 3826 matching lines @@
 
 
 void LCodeGen::DoStoreFrameContext(LStoreFrameContext* instr) {
   Register context = ToRegister(instr->context());
   __ Str(context, MemOperand(fp, StandardFrameConstants::kContextOffset));
 }
 
 
 }  // namespace internal
 }  // namespace v8