Track live instance and allocation counts for classes

runtime/vm/intermediate_language_arm.cc

Index: runtime/vm/intermediate_language_arm.cc
diff --git a/runtime/vm/intermediate_language_arm.cc b/runtime/vm/intermediate_language_arm.cc
index 6c620cac7ccde99ef9950d6c94eb1abb037f9a81..1169fda064e5eb4d01834408a39cdf09129e6c8b 100644
--- a/runtime/vm/intermediate_language_arm.cc
+++ b/runtime/vm/intermediate_language_arm.cc
@@ -2557,12 +2557,13 @@ void CheckEitherNonSmiInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
 
 LocationSummary* BoxDoubleInstr::MakeLocationSummary() const {
   const intptr_t kNumInputs = 1;
-  const intptr_t kNumTemps = 0;
+  const intptr_t kNumTemps = 1;
   LocationSummary* summary =
       new LocationSummary(kNumInputs,
                           kNumTemps,
                           LocationSummary::kCallOnSlowPath);
   summary->set_in(0, Location::RequiresFpuRegister());
+  summary->set_temp(0, Location::RequiresRegister());
   summary->set_out(Location::RequiresRegister());
   return summary;
 }
@@ -2609,7 +2610,8 @@ void BoxDoubleInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
 
   __ TryAllocate(compiler->double_class(),
                  slow_path->entry_label(),
-                 out_reg);
+                 out_reg,
+                 locs()->temp(0).reg());
   __ Bind(slow_path->exit_label());
   __ StoreDToOffset(value, out_reg, Double::value_offset() - kHeapObjectTag);
 }
@@ -2665,12 +2667,13 @@ void UnboxDoubleInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
 
 LocationSummary* BoxFloat32x4Instr::MakeLocationSummary() const {
   const intptr_t kNumInputs = 1;
-  const intptr_t kNumTemps = 0;
+  const intptr_t kNumTemps = 1;
   LocationSummary* summary =
       new LocationSummary(kNumInputs,
                           kNumTemps,
                           LocationSummary::kCallOnSlowPath);
   summary->set_in(0, Location::RequiresFpuRegister());
+  summary->set_temp(0, Location::RequiresRegister());
   summary->set_out(Location::RequiresRegister());
   return summary;
 }
@@ -2719,7 +2722,8 @@ void BoxFloat32x4Instr::EmitNativeCode(FlowGraphCompiler* compiler) {
 
   __ TryAllocate(compiler->float32x4_class(),
                  slow_path->entry_label(),
-                 out_reg);
+                 out_reg,
+                 locs()->temp(0).reg());
   __ Bind(slow_path->exit_label());
 
   __ StoreDToOffset(value_even, out_reg,
@@ -2770,12 +2774,13 @@ void UnboxFloat32x4Instr::EmitNativeCode(FlowGraphCompiler* compiler) {
 
 LocationSummary* BoxInt32x4Instr::MakeLocationSummary() const {
   const intptr_t kNumInputs = 1;
-  const intptr_t kNumTemps = 0;
+  const intptr_t kNumTemps = 1;
   LocationSummary* summary =
       new LocationSummary(kNumInputs,
                           kNumTemps,
                           LocationSummary::kCallOnSlowPath);
   summary->set_in(0, Location::RequiresFpuRegister());
+  summary->set_temp(0, Location::RequiresRegister());
   summary->set_out(Location::RequiresRegister());
   return summary;
 }
@@ -2824,7 +2829,8 @@ void BoxInt32x4Instr::EmitNativeCode(FlowGraphCompiler* compiler) {
 
   __ TryAllocate(compiler->int32x4_class(),
                  slow_path->entry_label(),
-                 out_reg);
+                 out_reg,
+                 locs()->temp(0).reg());
   __ Bind(slow_path->exit_label());
   __ StoreDToOffset(value_even, out_reg,
       Int32x4::value_offset() - kHeapObjectTag);