MIPS: Fix '[debug] implement intuitive semantics for stepping over await call.'

src/mips64/builtins-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.
 
 #if V8_TARGET_ARCH_MIPS64
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 692 matching lines @@
 
   // Load suspended function and context.
   __ ld(cp, FieldMemOperand(a1, JSGeneratorObject::kContextOffset));
   __ ld(a4, FieldMemOperand(a1, JSGeneratorObject::kFunctionOffset));
 
   // Flood function if we are stepping.
   Label prepare_step_in_if_stepping, prepare_step_in_suspended_generator;
   Label stepping_prepared;
   ExternalReference step_in_enabled =
       ExternalReference::debug_step_in_enabled_address(masm->isolate());
-  __ li(t1, Operand(step_in_enabled));
-  __ lb(t1, MemOperand(t1));
-  __ Branch(&prepare_step_in_if_stepping, ne, t1, Operand(zero_reg));
+  __ li(a5, Operand(step_in_enabled));
+  __ lb(a5, MemOperand(a5));
+  __ Branch(&prepare_step_in_if_stepping, ne, a5, Operand(zero_reg));
 
   // Flood function if we need to continue stepping in the suspended generator.
   ExternalReference debug_suspended_generator =
       ExternalReference::debug_suspended_generator_address(masm->isolate());
-  __ li(t1, Operand(debug_suspended_generator));
-  __ lw(t1, MemOperand(t1));
-  __ Branch(&prepare_step_in_suspended_generator, eq, t1, Operand(zero_reg));
+  __ li(a5, Operand(debug_suspended_generator));
+  __ lw(a5, MemOperand(a5));
+  __ Branch(&prepare_step_in_suspended_generator, eq, a1, Operand(a5));
   __ bind(&stepping_prepared);
 
   // Push receiver.
   __ ld(a5, FieldMemOperand(a1, JSGeneratorObject::kReceiverOffset));
   __ Push(a5);
 
   // ----------- S t a t e -------------
   //  -- a1    : the JSGeneratorObject to resume
   //  -- a2    : the resume mode (tagged)
   //  -- a4    : generator function
@@ skipping 2137 matching lines @@
   }
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS64