Remove new.target value from construct stub frames.

src/arm/builtins-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.
 
 #if V8_TARGET_ARCH_ARM
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 472 matching lines @@
       // r3: new target
       // r4: JSObject
       __ bind(&allocated);
 
       // Retrieve smi-tagged arguments count from the stack.
       __ ldr(r0, MemOperand(sp));
     }
 
     __ SmiUntag(r0);
 
-    // Push new.target onto the construct frame. This is stored just below the
-    // receiver on the stack.
-    __ push(r3);
-
     if (create_implicit_receiver) {
       // Push the allocated receiver to the stack. We need two copies
       // because we may have to return the original one and the calling
       // conventions dictate that the called function pops the receiver.
       __ push(r4);
       __ push(r4);
     } else {
       __ PushRoot(Heap::kTheHoleValueRootIndex);
     }
 
     // Set up pointer to last argument.
     __ add(r2, fp, Operand(StandardFrameConstants::kCallerSPOffset));
 
     // Copy arguments and receiver to the expression stack.
     // r0: number of arguments
     // r1: constructor function
     // r2: address of last argument (caller sp)
     // r3: new target
     // r4: number of arguments (smi-tagged)
     // sp[0]: receiver
     // sp[1]: receiver
-    // sp[2]: new.target
-    // sp[3]: number of arguments (smi-tagged)
+    // sp[2]: number of arguments (smi-tagged)
     Label loop, entry;
     __ SmiTag(r4, r0);
     __ b(&entry);
     __ bind(&loop);
     __ ldr(ip, MemOperand(r2, r4, LSL, kPointerSizeLog2 - 1));
     __ push(ip);
     __ bind(&entry);
     __ sub(r4, r4, Operand(2), SetCC);
     __ b(ge, &loop);
 
@@ skipping 13 matching lines @@
     }
 
     // Store offset of return address for deoptimizer.
     if (create_implicit_receiver && !is_api_function) {
       masm->isolate()->heap()->SetConstructStubDeoptPCOffset(masm->pc_offset());
     }
 
     // Restore context from the frame.
     // r0: result
     // sp[0]: receiver
-    // sp[1]: new.target
-    // sp[2]: number of arguments (smi-tagged)
+    // sp[1]: number of arguments (smi-tagged)
     __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
 
     if (create_implicit_receiver) {
       // If the result is an object (in the ECMA sense), we should get rid
       // of the receiver and use the result; see ECMA-262 section 13.2.2-7
       // on page 74.
       Label use_receiver, exit;
 
       // If the result is a smi, it is *not* an object in the ECMA sense.
       // r0: result
       // sp[0]: receiver
-      // sp[1]: new.target
-      // sp[2]: number of arguments (smi-tagged)
+      // sp[1]: number of arguments (smi-tagged)
       __ JumpIfSmi(r0, &use_receiver);
 
       // If the type of the result (stored in its map) is less than
       // FIRST_JS_RECEIVER_TYPE, it is not an object in the ECMA sense.
       __ CompareObjectType(r0, r1, r3, FIRST_JS_RECEIVER_TYPE);
       __ b(ge, &exit);
 
       // Throw away the result of the constructor invocation and use the
       // on-stack receiver as the result.
       __ bind(&use_receiver);
       __ ldr(r0, MemOperand(sp));
 
       // Remove receiver from the stack, remove caller arguments, and
       // return.
       __ bind(&exit);
       // r0: result
       // sp[0]: receiver (newly allocated object)
-      // sp[1]: new target
-      // sp[2]: number of arguments (smi-tagged)
-      __ ldr(r1, MemOperand(sp, 2 * kPointerSize));
+      // sp[1]: number of arguments (smi-tagged)
+      __ ldr(r1, MemOperand(sp, 1 * kPointerSize));
     } else {
-      __ ldr(r1, MemOperand(sp, kPointerSize));
+      __ ldr(r1, MemOperand(sp));
     }
 
     // Leave construct frame.
   }
 
   __ add(sp, sp, Operand(r1, LSL, kPointerSizeLog2 - 1));
   __ add(sp, sp, Operand(kPointerSize));
   if (create_implicit_receiver) {
     __ IncrementCounter(isolate->counters()->constructed_objects(), 1, r1, r2);
   }
@@ skipping 1340 matching lines @@
   }
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM