Add the VFP-ness to the minor number of the keyed store elements

IC so that the version from the snapshot is not used if we have
a more capable CPU at runtime.
Review URL: https://chromiumcodereview.appspot.com/10984065

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12624 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/arm/code-stubs-arm.cc

@@ -7262,6 +7262,7 @@ static const AheadOfTimeWriteBarrierStubList kAheadOfTime[] = {
 
 #undef REG
 
+
 bool RecordWriteStub::IsPregenerated() {
   for (const AheadOfTimeWriteBarrierStubList* entry = kAheadOfTime;
        !entry->object.is(no_reg);
@@ -7303,6 +7304,11 @@ void RecordWriteStub::GenerateFixedRegStubsAheadOfTime() {
 }
 
 
+bool CodeStub::CanUseFPRegisters() {
+  return CpuFeatures::IsSupported(VFP2);
+}
+
+
 // Takes the input in 3 registers: address_ value_ and object_.  A pointer to
 // the value has just been written into the object, now this stub makes sure
 // we keep the GC informed.  The word in the object where the value has been

src/code-stubs.h

@@ -162,6 +162,9 @@ class CodeStub BASE_EMBEDDED {
   // Lookup the code in the (possibly custom) cache.
   bool FindCodeInCache(Code** code_out);
 
+ protected:
+  static bool CanUseFPRegisters();
+
  private:
   // Nonvirtual wrapper around the stub-specific Generate function.  Call
   // this function to set up the macro assembler and generate the code.
@@ -998,13 +1001,15 @@ class KeyedStoreElementStub : public CodeStub {
                         KeyedAccessGrowMode grow_mode)
       : is_js_array_(is_js_array),
         elements_kind_(elements_kind),
-        grow_mode_(grow_mode) { }
+        grow_mode_(grow_mode),
+        fp_registers_(CanUseFPRegisters()) { }
 
   Major MajorKey() { return KeyedStoreElement; }
   int MinorKey() {
     return ElementsKindBits::encode(elements_kind_) |
         IsJSArrayBits::encode(is_js_array_) |
-        GrowModeBits::encode(grow_mode_);
+        GrowModeBits::encode(grow_mode_) |
+        FPRegisters::encode(fp_registers_);
   }
 
   void Generate(MacroAssembler* masm);
@@ -1013,10 +1018,12 @@ class KeyedStoreElementStub : public CodeStub {
   class ElementsKindBits: public BitField<ElementsKind,    0, 8> {};
   class GrowModeBits: public BitField<KeyedAccessGrowMode, 8, 1> {};
   class IsJSArrayBits: public BitField<bool,               9, 1> {};
+  class FPRegisters: public BitField<bool,                10, 1> {};
 
   bool is_js_array_;
   ElementsKind elements_kind_;
   KeyedAccessGrowMode grow_mode_;
+  bool fp_registers_;
 
   DISALLOW_COPY_AND_ASSIGN(KeyedStoreElementStub);
 };
@@ -1132,14 +1139,19 @@ class ElementsTransitionAndStoreStub : public CodeStub {
 
 class StoreArrayLiteralElementStub : public CodeStub {
  public:
-  explicit StoreArrayLiteralElementStub() {}
+  StoreArrayLiteralElementStub()
+        : fp_registers_(CanUseFPRegisters()) { }
 
  private:
+  class FPRegisters: public BitField<bool,                0, 1> {};
+
   Major MajorKey() { return StoreArrayLiteralElement; }
-  int MinorKey() { return 0; }
+  int MinorKey() { return FPRegisters::encode(fp_registers_); }
 
   void Generate(MacroAssembler* masm);
 
+  bool fp_registers_;
+
   DISALLOW_COPY_AND_ASSIGN(StoreArrayLiteralElementStub);
 };
 

src/ia32/code-stubs-ia32.cc

@@ -7206,6 +7206,11 @@ void RecordWriteStub::GenerateFixedRegStubsAheadOfTime() {
 }
 
 
+bool CodeStub::CanUseFPRegisters() {
+  return CpuFeatures::IsSupported(SSE2);
+}
+
+
 // Takes the input in 3 registers: address_ value_ and object_.  A pointer to
 // the value has just been written into the object, now this stub makes sure
 // we keep the GC informed.  The word in the object where the value has been

src/ic.h

@@ -650,7 +650,7 @@ class KeyedStoreIC: public KeyedIC {
   }
 
   MUST_USE_RESULT MaybeObject* Store(State state,
-                                   StrictModeFlag strict_mode,
+                                     StrictModeFlag strict_mode,
                                      Handle<Object> object,
                                      Handle<Object> name,
                                      Handle<Object> value,

src/mips/code-stubs-mips.cc

@@ -7512,6 +7512,11 @@ void RecordWriteStub::GenerateFixedRegStubsAheadOfTime() {
 }
 
 
+bool CodeStub::CanUseFPRegisters() {
+  return CpuFeatures::IsSupported(FPU);
+}
+
+
 // Takes the input in 3 registers: address_ value_ and object_.  A pointer to
 // the value has just been written into the object, now this stub makes sure
 // we keep the GC informed.  The word in the object where the value has been

src/x64/code-stubs-x64.cc

@@ -6144,6 +6144,11 @@ void RecordWriteStub::GenerateFixedRegStubsAheadOfTime() {
 }
 
 
+bool CodeStub::CanUseFPRegisters() {
+  return true;  // Always have SSE2 on x64.
+}
+
+
 // Takes the input in 3 registers: address_ value_ and object_.  A pointer to
 // the value has just been written into the object, now this stub makes sure
 // we keep the GC informed.  The word in the object where the value has been