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

src/builtins/ia32/builtins-ia32.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_IA32
 
 #include "src/code-factory.h"
 #include "src/codegen.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 1022 matching lines @@
   __ push(argument_count);
   __ push(new_target);
   __ push(closure);
 
   Register map = argument_count;
   Register index = ebx;
   __ mov(map, FieldOperand(closure, JSFunction::kSharedFunctionInfoOffset));
   __ mov(map, FieldOperand(map, SharedFunctionInfo::kOptimizedCodeMapOffset));
   __ mov(index, FieldOperand(map, FixedArray::kLengthOffset));
   __ cmp(index, Immediate(Smi::FromInt(2)));
-  __ j(less, &gotta_call_runtime);
+  __ j(less, &try_shared);
 
   // edx : native context
   // ebx : length / index
   // eax : optimized code map
   // stack[0] : new target
   // stack[4] : closure
   Register native_context = edx;
   __ mov(native_context, NativeContextOperand());
 
   __ bind(&loop_top);
@@ skipping 39 matching lines @@
   __ mov(closure, ebx);
   __ pop(new_target);
   __ pop(argument_count);
   __ jmp(entry);
 
   __ bind(&loop_bottom);
   __ sub(index, Immediate(Smi::FromInt(SharedFunctionInfo::kEntryLength)));
   __ cmp(index, Immediate(Smi::FromInt(1)));
   __ j(greater, &loop_top);
 
-  // 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);
   __ mov(entry, FieldOperand(closure, JSFunction::kSharedFunctionInfoOffset));
   // Is the shared function marked for tier up?
   __ test_b(FieldOperand(entry, SharedFunctionInfo::kMarkedForTierUpByteOffset),
             Immediate(1 << SharedFunctionInfo::kMarkedForTierUpBitWithinByte));
   __ j(not_zero, &gotta_call_runtime_no_stack);
 
@@ skipping 1983 matching lines @@
 
 void Builtins::Generate_InterpreterOnStackReplacement(MacroAssembler* masm) {
   Generate_OnStackReplacementHelper(masm, true);
 }
 
 #undef __
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_IA32