[stubs] Introduce a proper ToBooleanStub.

src/crankshaft/hydrogen.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/hydrogen.h"
 
 #include <sstream>
 
 #include "src/allocation-site-scopes.h"
 #include "src/ast/ast-numbering.h"
@@ skipping 888 matching lines @@
 void HGraphBuilder::IfBuilder::Then() {
   DCHECK(!captured_);
   DCHECK(!finished_);
   did_then_ = true;
   if (needs_compare_) {
     // Handle if's without any expressions, they jump directly to the "else"
     // branch. However, we must pretend that the "then" branch is reachable,
     // so that the graph builder visits it and sees any live range extending
     // constructs within it.
     HConstant* constant_false = builder()->graph()->GetConstantFalse();
-    ToBooleanStub::Types boolean_type = ToBooleanStub::Types();
-    boolean_type.Add(ToBooleanStub::BOOLEAN);
+    ToBooleanICStub::Types boolean_type = ToBooleanICStub::Types();
+    boolean_type.Add(ToBooleanICStub::BOOLEAN);
     HBranch* branch = builder()->New<HBranch>(
         constant_false, boolean_type, first_true_block_, first_false_block_);
     builder()->FinishCurrentBlock(branch);
   }
   builder()->set_current_block(first_true_block_);
   pending_merge_block_ = true;
 }
 
 
 void HGraphBuilder::IfBuilder::Else() {
@@ skipping 3370 matching lines @@
 
 void TestContext::BuildBranch(HValue* value) {
   // We expect the graph to be in edge-split form: there is no edge that
   // connects a branch node to a join node.  We conservatively ensure that
   // property by always adding an empty block on the outgoing edges of this
   // branch.
   HOptimizedGraphBuilder* builder = owner();
   if (value != NULL && value->CheckFlag(HValue::kIsArguments)) {
     builder->Bailout(kArgumentsObjectValueInATestContext);
   }
-  ToBooleanStub::Types expected(condition()->to_boolean_types());
+  ToBooleanICStub::Types expected(condition()->to_boolean_types());
   ReturnControl(owner()->New<HBranch>(value, expected), BailoutId::None());
 }
 
 
 // HOptimizedGraphBuilder infrastructure for bailing out and checking bailouts.
 #define CHECK_BAILOUT(call)                     \
   do {                                          \
     call;                                       \
     if (HasStackOverflow()) return;             \
   } while (false)
@@ skipping 6974 matching lines @@
       if (is_logical_and == expr->left()->ToBooleanIsTrue()) {
         Drop(1);
         CHECK_ALIVE(VisitForValue(expr->right()));
       }
       return ast_context()->ReturnValue(Pop());
     }
 
     // We need an extra block to maintain edge-split form.
     HBasicBlock* empty_block = graph()->CreateBasicBlock();
     HBasicBlock* eval_right = graph()->CreateBasicBlock();
-    ToBooleanStub::Types expected(expr->left()->to_boolean_types());
+    ToBooleanICStub::Types expected(expr->left()->to_boolean_types());
     HBranch* test = is_logical_and
         ? New<HBranch>(left_value, expected, eval_right, empty_block)
         : New<HBranch>(left_value, expected, empty_block, eval_right);
     FinishCurrentBlock(test);
 
     set_current_block(eval_right);
     Drop(1);  // Value of the left subexpression.
     CHECK_BAILOUT(VisitForValue(expr->right()));
 
     HBasicBlock* join_block =
@@ skipping 2146 matching lines @@
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 }  // namespace internal
 }  // namespace v8