[builtins] CompileLazy bailed out to the runtime entirely too often.

src/builtins/mips/builtins-mips.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_MIPS
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 1346 matching lines @@
   __ JumpIfRoot(index, Heap::kUndefinedValueRootIndex,
                 &gotta_call_runtime_no_stack);
 
   __ push(argument_count);
   __ push(new_target);
   __ push(closure);
 
   __ lw(map, FieldMemOperand(closure, JSFunction::kSharedFunctionInfoOffset));
   __ lw(map, FieldMemOperand(map, SharedFunctionInfo::kOptimizedCodeMapOffset));
   __ lw(index, FieldMemOperand(map, FixedArray::kLengthOffset));
-  __ Branch(&gotta_call_runtime, lt, index, Operand(Smi::FromInt(2)));
+  __ Branch(&try_shared, lt, index, Operand(Smi::FromInt(2)));
 
   // a3  : native context
   // a2  : length / index
   // a0  : optimized code map
   // stack[0] : new target
   // stack[4] : closure
   Register native_context = a3;
   __ lw(native_context, NativeContextMemOperand());
 
   __ bind(&loop_top);
@@ skipping 44 matching lines @@
   __ mov(closure, t1);
   __ pop(new_target);
   __ pop(argument_count);
   __ Jump(entry);
 
   __ bind(&loop_bottom);
   __ Subu(index, index,
           Operand(Smi::FromInt(SharedFunctionInfo::kEntryLength)));
   __ Branch(&loop_top, gt, index, Operand(Smi::FromInt(1)));
 
-  // We found no code.
-  __ jmp(&gotta_call_runtime);
-
+  // We found no code. Try the SharedFunctionInfo.
   __ bind(&try_shared);
   __ pop(closure);
   __ pop(new_target);
   __ pop(argument_count);
   __ lw(entry, FieldMemOperand(closure, JSFunction::kSharedFunctionInfoOffset));
   // Is the shared function marked for tier up?
   __ lbu(t1, FieldMemOperand(entry,
                              SharedFunctionInfo::kMarkedForTierUpByteOffset));
   __ And(t1, t1,
          Operand(1 << SharedFunctionInfo::kMarkedForTierUpBitWithinByte));
@@ skipping 1517 matching lines @@
     __ break_(0xCC);
   }
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS