MIPS: Only to the relevant checks in LoadFunctionPrototype.

src/mips64/macro-assembler-mips64.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_MIPS64
 
@@ skipping 3915 matching lines @@
 
 // ---------------------------------------------------------------------------
 // Support functions.
 
 
 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.
-  GetObjectType(function, result, scratch);
-  Branch(miss, ne, scratch, Operand(JS_FUNCTION_TYPE));
+    // Check that the function really is a function.  Load map into result reg.
+    GetObjectType(function, result, scratch);
+    Branch(miss, ne, scratch, Operand(JS_FUNCTION_TYPE));
 
-  if (miss_on_bound_function) {
     ld(scratch,
        FieldMemOperand(function, JSFunction::kSharedFunctionInfoOffset));
-    // ld(scratch,
-    //   FieldMemOperand(scratch, SharedFunctionInfo::kCompilerHintsOffset));
-    // And(scratch, scratch,
-    //    Operand(Smi::FromInt(1 << SharedFunctionInfo::kBoundFunction)));
     lwu(scratch,
         FieldMemOperand(scratch, SharedFunctionInfo::kCompilerHintsOffset));
     And(scratch, scratch,
         Operand(1 << SharedFunctionInfo::kBoundFunction));
     Branch(miss, ne, scratch, Operand(zero_reg));
+
+    // Make sure that the function has an instance prototype.
+    lbu(scratch, FieldMemOperand(result, Map::kBitFieldOffset));
+    And(scratch, scratch, Operand(1 << Map::kHasNonInstancePrototype));
+    Branch(&non_instance, ne, scratch, Operand(zero_reg));
   }
 
-  // Make sure that the function has an instance prototype.
-  Label non_instance;
-  lbu(scratch, FieldMemOperand(result, Map::kBitFieldOffset));
-  And(scratch, scratch, Operand(1 << Map::kHasNonInstancePrototype));
-  Branch(&non_instance, ne, scratch, Operand(zero_reg));
-
   // Get the prototype or initial map from the function.
   ld(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(t8, Heap::kTheHoleValueRootIndex);
   Branch(miss, eq, result, Operand(t8));
 
   // If the function does not have an initial map, we're done.
   Label done;
   GetObjectType(result, scratch, scratch);
   Branch(&done, ne, scratch, Operand(MAP_TYPE));
 
   // Get the prototype from the initial map.
   ld(result, FieldMemOperand(result, Map::kPrototypeOffset));
-  jmp(&done);
 
-  // Non-instance prototype: Fetch prototype from constructor field
-  // in initial map.
-  bind(&non_instance);
-  ld(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);
+    ld(result, FieldMemOperand(result, Map::kConstructorOffset));
+  }
 
   // All done.
   bind(&done);
 }
 
 
 void MacroAssembler::GetObjectType(Register object,
                                    Register map,
                                    Register type_reg) {
   ld(map, FieldMemOperand(object, HeapObject::kMapOffset));
@@ skipping 1947 matching lines @@
   }
   if (ms.shift() > 0) sra(result, result, ms.shift());
   srl(at, dividend, 31);
   Addu(result, result, Operand(at));
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS64