Uses correct mnemonic for vmrs instructions.

runtime/vm/assembler_arm.cc

Index: runtime/vm/assembler_arm.cc
===================================================================
--- runtime/vm/assembler_arm.cc	(revision 41020)
+++ runtime/vm/assembler_arm.cc	(working copy)
@@ -1186,16 +1186,19 @@
 }
 
 
-void Assembler::vmstat(Condition cond) {  // VMRS APSR_nzcv, FPSCR
+void Assembler::vmrs(Register rd, Condition cond) {
   ASSERT(TargetCPUFeatures::vfp_supported());
   ASSERT(cond != kNoCondition);
   int32_t encoding = (static_cast<int32_t>(cond) << kConditionShift) |
                      B27 | B26 | B25 | B23 | B22 | B21 | B20 | B16 |
-                     (static_cast<int32_t>(PC)*B12) |
+                     (static_cast<int32_t>(rd)*B12) |
                      B11 | B9 | B4;
   Emit(encoding);
 }
 
+void Assembler::vmstat(Condition cond) {
+  vmrs(APSR, cond);
+}
 
 static inline int ShiftOfOperandSize(OperandSize size) {
   switch (size) {