Collect type feedback on result of Math.[round|ceil|floor]

src/ia32/macro-assembler-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.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_IA32
 
 #include "src/base/bits.h"
 #include "src/base/division-by-constant.h"
@@ skipping 2123 matching lines @@
 
 void MacroAssembler::GetBuiltinEntry(Register target, Builtins::JavaScript id) {
   DCHECK(!target.is(edi));
   // Load the JavaScript builtin function from the builtins object.
   GetBuiltinFunction(edi, id);
   // Load the code entry point from the function into the target register.
   mov(target, FieldOperand(edi, JSFunction::kCodeEntryOffset));
 }
 
 
+void MacroAssembler::BranchIfNotBuiltin(Register function, Register temp,
+                                        BuiltinFunctionId id, Label* miss) {
+  mov(temp, FieldOperand(function, JSFunction::kSharedFunctionInfoOffset));
+  mov(temp, FieldOperand(temp, SharedFunctionInfo::kFunctionDataOffset));
+  cmp(temp, Immediate(Smi::FromInt(id)));
+  j(not_equal, miss);
+}
+
+
 void MacroAssembler::LoadContext(Register dst, int context_chain_length) {
   if (context_chain_length > 0) {
     // Move up the chain of contexts to the context containing the slot.
     mov(dst, Operand(esi, Context::SlotOffset(Context::PREVIOUS_INDEX)));
     for (int i = 1; i < context_chain_length; i++) {
       mov(dst, Operand(dst, Context::SlotOffset(Context::PREVIOUS_INDEX)));
     }
   } else {
     // Slot is in the current function context.  Move it into the
     // destination register in case we store into it (the write barrier
@@ skipping 1068 matching lines @@
   if (mag.shift > 0) sar(edx, mag.shift);
   mov(eax, dividend);
   shr(eax, 31);
   add(edx, eax);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32