A64: ElementsKind TODOs

src/a64/macro-assembler-a64.cc

Index: src/a64/macro-assembler-a64.cc
diff --git a/src/a64/macro-assembler-a64.cc b/src/a64/macro-assembler-a64.cc
index ca61b491632fa523ee997f33c90e577d908bfe7f..d26c2d003dc12099a36f08e290c520199dd60cd3 100644
--- a/src/a64/macro-assembler-a64.cc
+++ b/src/a64/macro-assembler-a64.cc
@@ -3644,11 +3644,9 @@ void MacroAssembler::TestMapBitfield(Register object, uint64_t mask) {
 }
 
 
-void MacroAssembler::LoadElementsKind(Register result, Register object) {
-  // Load map.
-  __ Ldr(result, FieldMemOperand(object, HeapObject::kMapOffset));
+void MacroAssembler::LoadElementsKindFromMap(Register result, Register map) {
   // Load the map's "bit field 2".
-  __ Ldrb(result, FieldMemOperand(result, Map::kBitField2Offset));
+  __ Ldrb(result, FieldMemOperand(map, Map::kBitField2Offset));
   // Retrieve elements_kind from bit field 2.
   __ Ubfx(result, result, Map::kElementsKindShift, Map::kElementsKindBitCount);
 }
@@ -3806,17 +3804,6 @@ void MacroAssembler::CheckFastObjectElements(Register map,
 }
 
 
-void MacroAssembler::CheckFastSmiElements(Register map,
-                                          Register scratch,
-                                          Label* fail) {
-  STATIC_ASSERT(FAST_SMI_ELEMENTS == 0);
-  STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1);
-  Ldrb(scratch, FieldMemOperand(map, Map::kBitField2Offset));
-  Cmp(scratch, Map::kMaximumBitField2FastHoleySmiElementValue);
-  B(hi, fail);
-}
-
-
 // Note: The ARM version of this clobbers elements_reg, but this version does
 // not. Some uses of this in A64 assume that elements_reg will be preserved.
 void MacroAssembler::StoreNumberToDoubleElements(Register value_reg,