Revert 12069: Implements a new API to set a function entry hook for profiling

src/ia32/code-stubs-ia32.cc

Index: src/ia32/code-stubs-ia32.cc
diff --git a/src/ia32/code-stubs-ia32.cc b/src/ia32/code-stubs-ia32.cc
index 7be2b4f65f9d8a5a06c7ec651452f1192f7199e8..afa3e1c568bdfadbe9e3feb88d51b2efaa56118a 100644
--- a/src/ia32/code-stubs-ia32.cc
+++ b/src/ia32/code-stubs-ia32.cc
@@ -7474,38 +7474,6 @@ void StoreArrayLiteralElementStub::Generate(MacroAssembler* masm) {
   __ ret(0);
 }
 
-
-void ProfileEntryHookStub::MaybeCallEntryHook(MacroAssembler* masm) {
-  if (entry_hook_ != NULL) {
-    ProfileEntryHookStub stub;
-    masm->CallStub(&stub);
-  }
-}
-
-
-void ProfileEntryHookStub::Generate(MacroAssembler* masm) {
-  // Ecx is the only volatile register we must save.
-  __ push(ecx);
-
-  // Calculate and push the original stack pointer.
-  __ lea(eax, Operand(esp, kPointerSize));
-  __ push(eax);
-
-  // Calculate and push the function address.
-  __ mov(eax, Operand(eax, 0));
-  __ sub(eax, Immediate(Assembler::kCallInstructionLength));
-  __ push(eax);
-
-  // Call the entry hook.
-  int32_t hook_location = reinterpret_cast<int32_t>(&entry_hook_);
-  __ call(Operand(hook_location, RelocInfo::NONE));
-  __ add(esp, Immediate(2 * kPointerSize));
-
-  // Restore ecx.
-  __ pop(ecx);
-  __ ret(0);
-}
-
 #undef __
 
 } }  // namespace v8::internal