[Isolates] Merge from bleeding_edge, revisions 5934-6100.

src/arm/full-codegen-arm.cc

Index: src/arm/full-codegen-arm.cc
===================================================================
--- src/arm/full-codegen-arm.cc	(revision 6904)
+++ src/arm/full-codegen-arm.cc	(working copy)
@@ -206,6 +206,11 @@
 }
 
 
+void FullCodeGenerator::ClearAccumulator() {
+  __ mov(r0, Operand(Smi::FromInt(0)));
+}
+
+
 void FullCodeGenerator::EmitStackCheck(IterationStatement* stmt) {
   Comment cmnt(masm_, "[ Stack check");
   Label ok;
@@ -891,7 +896,9 @@
   __ bind(&update_each);
   __ mov(result_register(), r3);
   // Perform the assignment as if via '='.
-  EmitAssignment(stmt->each());
+  { EffectContext context(this);
+    EmitAssignment(stmt->each(), stmt->AssignmentId());
+  }
 
   // Generate code for the body of the loop.
   Visit(stmt->body());
@@ -1452,7 +1459,7 @@
     // For property compound assignments we need another deoptimization
     // point after the property load.
     if (property != NULL) {
-      PrepareForBailoutForId(expr->compound_bailout_id(), TOS_REG);
+      PrepareForBailoutForId(expr->CompoundLoadId(), TOS_REG);
     }
 
     Token::Value op = expr->binary_op();
@@ -1495,6 +1502,8 @@
     case VARIABLE:
       EmitVariableAssignment(expr->target()->AsVariableProxy()->var(),
                              expr->op());
+      PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
+      context()->Plug(r0);
       break;
     case NAMED_PROPERTY:
       EmitNamedPropertyAssignment(expr);
@@ -1546,7 +1555,7 @@
 }
 
 
-void FullCodeGenerator::EmitAssignment(Expression* expr) {
+void FullCodeGenerator::EmitAssignment(Expression* expr, int bailout_ast_id) {
   // Invalid left-hand sides are rewritten to have a 'throw
   // ReferenceError' on the left-hand side.
   if (!expr->IsValidLeftHandSide()) {
@@ -1596,6 +1605,8 @@
       break;
     }
   }
+  PrepareForBailoutForId(bailout_ast_id, TOS_REG);
+  context()->Plug(r0);
 }
 
 
@@ -1670,8 +1681,6 @@
     }
     __ bind(&done);
   }
-
-  context()->Plug(result_register());
 }
 
 
@@ -1715,10 +1724,10 @@
     __ push(ip);
     __ CallRuntime(Runtime::kToFastProperties, 1);
     __ pop(r0);
-    context()->DropAndPlug(1, r0);
-  } else {
-    context()->Plug(r0);
+    __ Drop(1);
   }
+  PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
+  context()->Plug(r0);
 }
 
 
@@ -1760,10 +1769,10 @@
     __ push(ip);
     __ CallRuntime(Runtime::kToFastProperties, 1);
     __ pop(r0);
-    context()->DropAndPlug(1, r0);
-  } else {
-    context()->Plug(r0);
+    __ Drop(1);
   }
+  PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
+  context()->Plug(r0);
 }
 
 
@@ -3220,6 +3229,8 @@
         { EffectContext context(this);
           EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(),
                                  Token::ASSIGN);
+          PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
+          context.Plug(r0);
         }
         // For all contexts except EffectConstant We have the result on
         // top of the stack.
@@ -3229,6 +3240,8 @@
       } else {
         EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(),
                                Token::ASSIGN);
+        PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
+        context()->Plug(r0);
       }
       break;
     case NAMED_PROPERTY: {
@@ -3237,6 +3250,7 @@
       Handle<Code> ic(isolate()->builtins()->builtin(
           Builtins::StoreIC_Initialize));
       EmitCallIC(ic, RelocInfo::CODE_TARGET);
+      PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
       if (expr->is_postfix()) {
         if (!context()->IsEffect()) {
           context()->PlugTOS();
@@ -3252,6 +3266,7 @@
       Handle<Code> ic(isolate()->builtins()->builtin(
           Builtins::KeyedStoreIC_Initialize));
       EmitCallIC(ic, RelocInfo::CODE_TARGET);
+      PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
       if (expr->is_postfix()) {
         if (!context()->IsEffect()) {
           context()->PlugTOS();
@@ -3438,7 +3453,7 @@
 
     case Token::INSTANCEOF: {
       VisitForStackValue(expr->right());
-      InstanceofStub stub;
+      InstanceofStub stub(InstanceofStub::kNoFlags);
       __ CallStub(&stub);
       PrepareForBailoutBeforeSplit(TOS_REG, true, if_true, if_false);
       // The stub returns 0 for true.