Revert of Add unoptimized/optimized variants of MathFloor TF code stub

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index a798d5e35010e21646886de17de70556188f235f..c06c6c1fe498b1a9daf9314017a54d0dcf89f659 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -94,7 +94,6 @@
   /* TurboFanCodeStubs */                   \
   V(StringLengthTF)                         \
   V(StringAddTF)                            \
-  /* TurboFanICs */                         \
   V(MathFloor)                              \
   /* IC Handler stubs */                    \
   V(ArrayBufferViewLoadField)               \
@@ -217,9 +216,7 @@
 
   virtual CallInterfaceDescriptor GetCallInterfaceDescriptor() const = 0;
 
-  virtual int GetStackParameterCount() const {
-    return GetCallInterfaceDescriptor().GetStackParameterCount();
-  }
+  virtual int GetStackParameterCount() const { return 0; }
 
   virtual void InitializeDescriptor(CodeStubDescriptor* descriptor) {}
 
@@ -363,26 +360,6 @@
   Handle<Code> GenerateCode() override;                               \
   DEFINE_CODE_STUB(NAME, SUPER)
 
-#define DEFINE_TURBOFAN_CODE_STUB(NAME, SUPER)                          \
- public:                                                                \
-  CallInterfaceDescriptor GetCallInterfaceDescriptor() const override { \
-    return DESC##Descriptor(isolate());                                 \
-  };                                                                    \
-  DEFINE_CODE_STUB(NAME, SUPER)
-
-#define DEFINE_TURBOFAN_IC(NAME, SUPER, DESC)                           \
- public:                                                                \
-  CallInterfaceDescriptor GetCallInterfaceDescriptor() const override { \
-    if (GetCallMode() == CALL_FROM_OPTIMIZED_CODE) {                    \
-      return DESC##CallFromOptimizedCodeDescriptor(isolate());          \
-    } else {                                                            \
-      return DESC##CallFromUnoptimizedCodeDescriptor(isolate());        \
-    }                                                                   \
-  };                                                                    \
-                                                                        \
- protected:                                                             \
-  DEFINE_CODE_STUB(NAME, SUPER)
-
 #define DEFINE_HANDLER_CODE_STUB(NAME, SUPER) \
  public:                                      \
   Handle<Code> GenerateCode() override;       \
@@ -564,33 +541,6 @@
 
  private:
   DEFINE_CODE_STUB_BASE(TurboFanCodeStub, CodeStub);
-};
-
-
-class TurboFanIC : public TurboFanCodeStub {
- public:
-  enum CallMode { CALL_FROM_UNOPTIMIZED_CODE, CALL_FROM_OPTIMIZED_CODE };
-
- protected:
-  explicit TurboFanIC(Isolate* isolate, CallMode mode)
-      : TurboFanCodeStub(isolate) {
-    minor_key_ = CallModeBits::encode(mode);
-  }
-
-  CallMode GetCallMode() const { return CallModeBits::decode(minor_key_); }
-
-  void set_sub_minor_key(uint32_t key) {
-    minor_key_ = SubMinorKeyBits::update(minor_key_, key);
-  }
-
-  uint32_t sub_minor_key() const { return SubMinorKeyBits::decode(minor_key_); }
-
-  static const int kSubMinorKeyBits = kStubMinorKeyBits - 1;
-
- private:
-  class CallModeBits : public BitField<CallMode, 0, 1> {};
-  class SubMinorKeyBits : public BitField<int, 1, kSubMinorKeyBits> {};
-  DEFINE_CODE_STUB_BASE(TurboFanIC, TurboFanCodeStub);
 };
 
 
@@ -660,12 +610,13 @@
 };
 
 
-class MathFloorStub : public TurboFanIC {
- public:
-  explicit MathFloorStub(Isolate* isolate, TurboFanIC::CallMode mode)
-      : TurboFanIC(isolate, mode) {}
-  Code::Kind GetCodeKind() const override { return Code::CALL_IC; }
-  DEFINE_TURBOFAN_IC(MathFloor, TurboFanIC, MathRoundVariant);
+class MathFloorStub : public TurboFanCodeStub {
+ public:
+  explicit MathFloorStub(Isolate* isolate) : TurboFanCodeStub(isolate) {}
+  int GetStackParameterCount() const override { return 1; }
+
+  DEFINE_CALL_INTERFACE_DESCRIPTOR(MathRoundVariant);
+  DEFINE_CODE_STUB(MathFloor, TurboFanCodeStub);
 };