Only to the relevant checks in LoadFunctionPrototype

src/arm/macro-assembler-arm.cc

 // Copyright 2012 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 <limits.h>  // For LONG_MIN, LONG_MAX.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_ARM
 
@@ skipping 2265 matching lines @@
   Jump(success, RelocInfo::CODE_TARGET, eq);
   bind(&fail);
 }
 
 
 void MacroAssembler::TryGetFunctionPrototype(Register function,
                                              Register result,
                                              Register scratch,
                                              Label* miss,
                                              bool miss_on_bound_function) {
-  // Check that the receiver isn't a smi.
-  JumpIfSmi(function, miss);
+  Label non_instance;
+  if (miss_on_bound_function) {
+    // Check that the receiver isn't a smi.
+    JumpIfSmi(function, miss);
 
-  // Check that the function really is a function.  Load map into result reg.
-  CompareObjectType(function, result, scratch, JS_FUNCTION_TYPE);
-  b(ne, miss);
+    // Check that the function really is a function.  Load map into result reg.
+    CompareObjectType(function, result, scratch, JS_FUNCTION_TYPE);
+    b(ne, miss);
 
-  if (miss_on_bound_function) {
     ldr(scratch,
         FieldMemOperand(function, JSFunction::kSharedFunctionInfoOffset));
     ldr(scratch,
         FieldMemOperand(scratch, SharedFunctionInfo::kCompilerHintsOffset));
     tst(scratch,
         Operand(Smi::FromInt(1 << SharedFunctionInfo::kBoundFunction)));
     b(ne, miss);
+
+    // Make sure that the function has an instance prototype.
+    ldrb(scratch, FieldMemOperand(result, Map::kBitFieldOffset));
+    tst(scratch, Operand(1 << Map::kHasNonInstancePrototype));
+    b(ne, &non_instance);
   }
 
-  // Make sure that the function has an instance prototype.
-  Label non_instance;
-  ldrb(scratch, FieldMemOperand(result, Map::kBitFieldOffset));
-  tst(scratch, Operand(1 << Map::kHasNonInstancePrototype));
-  b(ne, &non_instance);
-
   // Get the prototype or initial map from the function.
   ldr(result,
       FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset));
 
   // If the prototype or initial map is the hole, don't return it and
   // simply miss the cache instead. This will allow us to allocate a
   // prototype object on-demand in the runtime system.
   LoadRoot(ip, Heap::kTheHoleValueRootIndex);
   cmp(result, ip);
   b(eq, miss);
 
   // If the function does not have an initial map, we're done.
   Label done;
   CompareObjectType(result, scratch, scratch, MAP_TYPE);
   b(ne, &done);
 
   // Get the prototype from the initial map.
   ldr(result, FieldMemOperand(result, Map::kPrototypeOffset));
-  jmp(&done);
 
-  // Non-instance prototype: Fetch prototype from constructor field
-  // in initial map.
-  bind(&non_instance);
-  ldr(result, FieldMemOperand(result, Map::kConstructorOffset));
+  if (miss_on_bound_function) {
+    jmp(&done);
+
+    // Non-instance prototype: Fetch prototype from constructor field
+    // in initial map.
+    bind(&non_instance);
+    ldr(result, FieldMemOperand(result, Map::kConstructorOffset));
+  }
 
   // All done.
   bind(&done);
 }
 
 
 void MacroAssembler::CallStub(CodeStub* stub,
                               TypeFeedbackId ast_id,
                               Condition cond) {
   ASSERT(AllowThisStubCall(stub));  // Stub calls are not allowed in some stubs.
@@ skipping 1756 matching lines @@
     sub(result, result, Operand(dividend));
   }
   if (ms.shift() > 0) mov(result, Operand(result, ASR, ms.shift()));
   add(result, result, Operand(dividend, LSR, 31));
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM