[compiler] Remove --ignition-preserve-bytecode flag.

src/builtins/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 1119 matching lines @@
   __ bind(&switch_to_different_code_kind);
   __ LeaveFrame(StackFrame::JAVA_SCRIPT);
   __ ld(a4, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
   __ ld(a4, FieldMemOperand(a4, SharedFunctionInfo::kCodeOffset));
   __ Daddu(a4, a4, Operand(Code::kHeaderSize - kHeapObjectTag));
   __ sd(a4, FieldMemOperand(a1, JSFunction::kCodeEntryOffset));
   __ RecordWriteCodeEntryField(a1, a4, a5);
   __ Jump(a4);
 }
 
-void Builtins::Generate_InterpreterMarkBaselineOnReturn(MacroAssembler* masm) {
-  // Save the function and context for call to CompileBaseline.
-  __ ld(a1, MemOperand(fp, StandardFrameConstants::kFunctionOffset));
-  __ ld(kContextRegister,
-        MemOperand(fp, StandardFrameConstants::kContextOffset));
-
-  // Leave the frame before recompiling for baseline so that we don't count as
-  // an activation on the stack.
-  LeaveInterpreterFrame(masm, t0);
-
-  {
-    FrameScope frame_scope(masm, StackFrame::INTERNAL);
-    // Push return value.
-    __ push(v0);
-
-    // Push function as argument and compile for baseline.
-    __ push(a1);
-    __ CallRuntime(Runtime::kCompileBaseline);
-
-    // Restore return value.
-    __ pop(v0);
-  }
-  __ Jump(ra);
-}
-
 static void Generate_StackOverflowCheck(MacroAssembler* masm, Register num_args,
                                         Register scratch1, Register scratch2,
                                         Label* stack_overflow) {
   // Check the stack for overflow. We are not trying to catch
   // interruptions (e.g. debug break and preemption) here, so the "real stack
   // limit" is checked.
   __ LoadRoot(scratch1, Heap::kRealStackLimitRootIndex);
   // Make scratch1 the space we have left. The stack might already be overflowed
   // here which will cause scratch1 to become negative.
   __ dsubu(scratch1, sp, scratch1);
@@ skipping 1808 matching lines @@
     __ break_(0xCC);
   }
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS64