MIPS: Capture receiver in generator object

src/mips/full-codegen-mips.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1983 matching lines @@
   Label wrong_state, done;
   __ lw(a3, FieldMemOperand(a1, JSGeneratorObject::kContinuationOffset));
   STATIC_ASSERT(JSGeneratorObject::kGeneratorExecuting <= 0);
   STATIC_ASSERT(JSGeneratorObject::kGeneratorClosed <= 0);
   __ Branch(&wrong_state, le, a3, Operand(zero_reg));
 
   // Load suspended function and context.
   __ lw(cp, FieldMemOperand(a1, JSGeneratorObject::kContextOffset));
   __ lw(t0, FieldMemOperand(a1, JSGeneratorObject::kFunctionOffset));
 
-  // Push holes for arguments to generator function.
+  // Load receiver and store as the first argument.
+  __ lw(a2, FieldMemOperand(a1, JSGeneratorObject::kReceiverOffset));
+  __ push(a2);
+
+  // Push holes for the rest of the arguments to the generator function.
   __ lw(a3, FieldMemOperand(t0, JSFunction::kSharedFunctionInfoOffset));
   __ lw(a3,
         FieldMemOperand(a3, SharedFunctionInfo::kFormalParameterCountOffset));
   __ LoadRoot(a2, Heap::kTheHoleValueRootIndex);
-  Label push_argument_holes;
+  Label push_argument_holes, push_frame;
   __ bind(&push_argument_holes);
+  __ Subu(a3, a3, Operand(1));
+  __ Branch(&push_frame, lt, a3, Operand(zero_reg));
   __ push(a2);
-  __ Subu(a3, a3, Operand(1));
-  __ Branch(&push_argument_holes, ge, a3, Operand(zero_reg));
+  __ jmp(&push_argument_holes);
 
   // Enter a new JavaScript frame, and initialize its slots as they were when
   // the generator was suspended.
-  Label push_frame, resume_frame;
+  Label resume_frame;
   __ bind(&push_frame);
   __ Call(&resume_frame);
   __ jmp(&done);
   __ bind(&resume_frame);
   __ push(ra);  // Return address.
   __ push(fp);  // Caller's frame pointer.
   __ mov(fp, sp);
   __ push(cp);  // Callee's context.
   __ push(t0);  // Callee's JS Function.
 
@@ skipping 2682 matching lines @@
   *context_length = 0;
   return previous_;
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS