Implement missing features to run Hello world! in checked mode on simulated ARM.

runtime/vm/assembler_arm.cc

Index: runtime/vm/assembler_arm.cc
===================================================================
--- runtime/vm/assembler_arm.cc	(revision 21778)
+++ runtime/vm/assembler_arm.cc	(working copy)
@@ -1224,27 +1224,29 @@
 
 
 // Uses a code sequence that can easily be decoded.
-void Assembler::LoadWordFromPoolOffset(Register rd, int32_t offset) {
+void Assembler::LoadWordFromPoolOffset(Register rd,
+                                       int32_t offset,
+                                       Condition cond) {
   ASSERT(rd != PP);
   int32_t offset_mask = 0;
   if (Address::CanHoldLoadOffset(kLoadWord, offset, &offset_mask)) {
-    ldr(rd, Address(PP, offset));
+    ldr(rd, Address(PP, offset), cond);
   } else {
     int32_t offset_hi = offset & ~offset_mask;  // signed
     uint32_t offset_lo = offset & offset_mask;  // unsigned
     // Inline a simplified version of AddImmediate(rd, PP, offset_hi).
     ShifterOperand shifter_op;
     if (ShifterOperand::CanHold(offset_hi, &shifter_op)) {
-      add(rd, PP, shifter_op);
+      add(rd, PP, shifter_op, cond);
     } else {
       movw(rd, Utils::Low16Bits(offset_hi));
       const uint16_t value_high = Utils::High16Bits(offset_hi);
       if (value_high != 0) {
-        movt(rd, value_high);
+        movt(rd, value_high, cond);
       }
-      add(rd, PP, ShifterOperand(LR));
+      add(rd, PP, ShifterOperand(LR), cond);
     }
-    ldr(rd, Address(rd, offset_lo));
+    ldr(rd, Address(rd, offset_lo), cond);
   }
 }
 
@@ -1257,24 +1259,24 @@
 }
 
 
-void Assembler::LoadObject(Register rd, const Object& object) {
+void Assembler::LoadObject(Register rd, const Object& object, Condition cond) {
   // Smis and VM heap objects are never relocated; do not use object pool.
   if (object.IsSmi()) {
-    LoadImmediate(rd, reinterpret_cast<int32_t>(object.raw()));
+    LoadImmediate(rd, reinterpret_cast<int32_t>(object.raw()), cond);
   } else if (object.InVMHeap()) {
     // Make sure that class CallPattern is able to decode this load immediate.
     const int32_t object_raw = reinterpret_cast<int32_t>(object.raw());
-    movw(rd, Utils::Low16Bits(object_raw));
+    movw(rd, Utils::Low16Bits(object_raw), cond);
     const uint16_t value_high = Utils::High16Bits(object_raw);
     if (value_high != 0) {
-      movt(rd, value_high);
+      movt(rd, value_high, cond);
     }
   } else {
     // Make sure that class CallPattern is able to decode this load from the
     // object pool.
     const int32_t offset =
         Array::data_offset() + 4*AddObject(object) - kHeapObjectTag;
-    LoadWordFromPoolOffset(rd, offset);
+    LoadWordFromPoolOffset(rd, offset, cond);
   }
 }