diff --git a/compiler/dex/quick/arm/target_arm.cc b/compiler/dex/quick/arm/target_arm.cc
index 5ebe0a3..5e9a8b0 100644
--- a/compiler/dex/quick/arm/target_arm.cc
+++ b/compiler/dex/quick/arm/target_arm.cc
@@ -559,10 +559,13 @@
       (arena_->Alloc(num_fp_regs * sizeof(*reg_pool_->FPRegs), kArenaAllocRegAlloc));
   CompilerInitPool(reg_pool_->core_regs, core_regs, reg_pool_->num_core_regs);
   CompilerInitPool(reg_pool_->FPRegs, FpRegs, reg_pool_->num_fp_regs);
+
   // Keep special registers from being allocated
+  // Don't reserve the r4 if we are doing implicit suspend checks.
+  bool no_suspend = NO_SUSPEND || !Runtime::Current()->ExplicitSuspendChecks();
   for (int i = 0; i < num_reserved; i++) {
-    if (NO_SUSPEND && (ReservedRegs[i] == rARM_SUSPEND)) {
-      // To measure cost of suspend check
+    if (no_suspend && (ReservedRegs[i] == rARM_SUSPEND)) {
+      // Don't reserve the suspend register.
       continue;
     }
     MarkInUse(ReservedRegs[i]);
diff --git a/runtime/oat.cc b/runtime/oat.cc
index f970789..246e090 100644
--- a/runtime/oat.cc
+++ b/runtime/oat.cc
@@ -22,7 +22,7 @@
 namespace art {
 
 const uint8_t OatHeader::kOatMagic[] = { 'o', 'a', 't', '\n' };
-const uint8_t OatHeader::kOatVersion[] = { '0', '1', '9', '\0' };
+const uint8_t OatHeader::kOatVersion[] = { '0', '2', '0', '\0' };
 
 OatHeader::OatHeader() {
   memset(this, 0, sizeof(*this));