Removes loads from PP from stubs on arm64.

runtime/vm/assembler_arm64.cc

Index: runtime/vm/assembler_arm64.cc
===================================================================
--- runtime/vm/assembler_arm64.cc	(revision 35524)
+++ runtime/vm/assembler_arm64.cc	(working copy)
@@ -611,8 +611,8 @@
 void Assembler::LoadFromOffset(
     Register dest, Register base, int32_t offset, OperandSize sz) {
   ASSERT(base != TMP2);
-  if (Address::CanHoldOffset(offset)) {
-    ldr(dest, Address(base, offset), sz);
+  if (Address::CanHoldOffset(offset, Address::Offset, sz)) {
+    ldr(dest, Address(base, offset, Address::Offset, sz), sz);
   } else {
     // Since offset is 32-bits, it won't be loaded from the pool.
     AddImmediate(TMP2, base, offset, kNoRegister);
@@ -625,8 +625,8 @@
     Register src, Register base, int32_t offset, OperandSize sz) {
   ASSERT(src != TMP2);
   ASSERT(base != TMP2);
-  if (Address::CanHoldOffset(offset)) {
-    str(src, Address(base, offset), sz);
+  if (Address::CanHoldOffset(offset, Address::Offset, sz)) {
+    str(src, Address(base, offset, Address::Offset, sz), sz);
   } else {
     // Since offset is 32-bits, it won't be loaded from the pool.
     AddImmediate(TMP2, base, offset, kNoRegister);
@@ -923,6 +923,7 @@
 
 void Assembler::UpdateAllocationStats(intptr_t cid,
                                       Register temp_reg,
+                                      Register pp,
                                       Heap::Space space) {
   ASSERT(temp_reg != kNoRegister);
   ASSERT(temp_reg != TMP);
@@ -936,10 +937,10 @@
     const uword count_field_offset = (space == Heap::kNew) ?
       ClassHeapStats::allocated_since_gc_new_space_offset() :
       ClassHeapStats::allocated_since_gc_old_space_offset();
-    LoadImmediate(temp_reg, class_heap_stats_table_address + class_offset, PP);
+    LoadImmediate(temp_reg, class_heap_stats_table_address + class_offset, pp);
     const Address& count_address = Address(temp_reg, count_field_offset);
     ldr(TMP, count_address);
-    AddImmediate(TMP, TMP, 1, PP);
+    AddImmediate(TMP, TMP, 1, pp);
     str(TMP, count_address);
   } else {
     ASSERT(temp_reg != kNoRegister);
@@ -947,11 +948,11 @@
     const uword count_field_offset = (space == Heap::kNew) ?
       ClassHeapStats::allocated_since_gc_new_space_offset() :
       ClassHeapStats::allocated_since_gc_old_space_offset();
-    LoadImmediate(temp_reg, class_table->ClassStatsTableAddress(), PP);
+    LoadImmediate(temp_reg, class_table->ClassStatsTableAddress(), pp);
     ldr(temp_reg, Address(temp_reg));
-    AddImmediate(temp_reg, temp_reg, class_offset, PP);
+    AddImmediate(temp_reg, temp_reg, class_offset, pp);
     ldr(TMP, Address(temp_reg, count_field_offset));
-    AddImmediate(TMP, TMP, 1, PP);
+    AddImmediate(TMP, TMP, 1, pp);
     str(TMP, Address(temp_reg, count_field_offset));
   }
 }