More --use_slow_path tests, add that VMOption to two tests.

runtime/vm/stub_code_ia32.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_IA32)
 
 #include "vm/code_generator.h"
 #include "vm/compiler.h"
 #include "vm/ic_data.h"
@@ skipping 622 matching lines @@
   Label slow_case;
   const Immediate raw_null =
       Immediate(reinterpret_cast<intptr_t>(Object::null()));
 
   if (FLAG_inline_alloc) {
     // Compute the size to be allocated, it is based on the array length
     // and it computed as:
     // RoundedAllocationSize((array_length * kwordSize) + sizeof(RawArray)).
     // Assert that length is a Smi.
     __ testl(EDX, Immediate(kSmiTagSize));
-    __ j(NOT_ZERO, &slow_case, Assembler::kNearJump);
+    if (FLAG_use_slow_path) {
+      __ jmp(&slow_case);
+    } else {
+      __ j(NOT_ZERO, &slow_case, Assembler::kNearJump);
+    }
     __ movl(EDI, FieldAddress(CTX, Context::isolate_offset()));
     __ movl(EDI, Address(EDI, Isolate::heap_offset()));
     __ movl(EDI, Address(EDI, Heap::new_space_offset()));
 
     // Calculate and align allocation size.
     // Load new object start and calculate next object start.
     // ECX: array element type.
     // EDX: Array length as Smi.
     // EDI: Points to new space object.
     __ movl(EAX, Address(EDI, Scavenger::top_offset()));
@@ skipping 310 matching lines @@
 
     // Now allocate the object.
     // EDX: number of context variables.
     __ movl(EAX, Address::Absolute(heap->TopAddress()));
     __ addl(EBX, EAX);
     // Check if the allocation fits into the remaining space.
     // EAX: potential new object.
     // EBX: potential next object start.
     // EDX: number of context variables.
     __ cmpl(EBX, Address::Absolute(heap->EndAddress()));
-    __ j(ABOVE_EQUAL, &slow_case, Assembler::kNearJump);
+    if (FLAG_use_slow_path) {
+      __ jmp(&slow_case);
+    } else {
+      __ j(ABOVE_EQUAL, &slow_case, Assembler::kNearJump);
+    }
 
     // Successfully allocated the object, now update top to point to
     // next object start and initialize the object.
     // EAX: new object.
     // EBX: next object start.
     // EDX: number of context variables.
     __ movl(Address::Absolute(heap->TopAddress()), EBX);
     __ addl(EAX, Immediate(kHeapObjectTag));
 
     // Initialize the class field in the context object.
@@ skipping 96 matching lines @@
       __ j(EQUAL, &null_instantiator, Assembler::kNearJump);
       __ addl(EBX, Immediate(type_args_size));
       __ Bind(&null_instantiator);
       // ECX: potential new object end and, if ECX != EBX, potential new
       // InstantiatedTypeArguments object start.
     }
     // Check if the allocation fits into the remaining space.
     // EAX: potential new object start.
     // EBX: potential next object start.
     __ cmpl(EBX, Address::Absolute(heap->EndAddress()));
-    __ j(ABOVE_EQUAL, &slow_case, Assembler::kNearJump);
+    if (FLAG_use_slow_path) {
+      __ jmp(&slow_case);
+    } else {
+      __ j(ABOVE_EQUAL, &slow_case, Assembler::kNearJump);
+    }
 
     // Successfully allocated the object(s), now update top to point to
     // next object start and initialize the object.
     __ movl(Address::Absolute(heap->TopAddress()), EBX);
 
     if (is_cls_parameterized) {
       // Initialize the type arguments field in the object.
       // EAX: new object start.
       // ECX: potential new object end and, if ECX != EBX, potential new
       // InstantiatedTypeArguments object start.
@@ skipping 151 matching lines @@
   if (FLAG_inline_alloc &&
       PageSpace::IsPageAllocatableSize(closure_size + context_size)) {
     Label slow_case;
     Heap* heap = Isolate::Current()->heap();
     __ movl(EAX, Address::Absolute(heap->TopAddress()));
     __ leal(EBX, Address(EAX, closure_size));
     if (is_implicit_instance_closure) {
       __ movl(ECX, EBX);  // ECX: new context address.
       __ addl(EBX, Immediate(context_size));
     }
-    if (FLAG_use_slow_path) {
-      __ jmp(&slow_case);
-    }
     // Check if the allocation fits into the remaining space.
     // EAX: potential new closure object.
     // ECX: potential new context object (only if is_implicit_closure).
     // EBX: potential next object start.
     __ cmpl(EBX, Address::Absolute(heap->EndAddress()));
-    __ j(ABOVE_EQUAL, &slow_case, Assembler::kNearJump);
+    if (FLAG_use_slow_path) {
+      __ jmp(&slow_case);
+    } else {
+      __ j(ABOVE_EQUAL, &slow_case, Assembler::kNearJump);
+    }
 
     // Successfully allocated the object, now update top to point to
     // next object start and initialize the object.
     __ movl(Address::Absolute(heap->TopAddress()), EBX);
 
     // Initialize the class field in the object.
     // EAX: new closure object.
     // ECX: new context object (only if is_implicit_closure).
     __ LoadObject(EDX, cls);  // Load signature class of closure.
     __ movl(Address(EAX, Closure::class_offset()), EDX);
@@ skipping 246 matching lines @@
   // EAX: Target function.
   __ movl(EAX, FieldAddress(EAX, Function::code_offset()));
   __ movl(EAX, FieldAddress(EAX, Code::instructions_offset()));
   __ addl(EAX, Immediate(Instructions::HeaderSize() - kHeapObjectTag));
   __ jmp(EAX);
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_IA32