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 da55f78440ec2de89af76166088f6ba0b5d139c6..b79527b7555de31289479bc700f73ea79327db7d 100644
--- a/runtime/vm/intermediate_language_arm.cc
+++ b/runtime/vm/intermediate_language_arm.cc
@@ -1678,7 +1678,8 @@ void StoreInstanceFieldInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
       compiler->AddSlowPathCode(slow_path);
       __ TryAllocate(compiler->double_class(),
                      slow_path->entry_label(),
-                     temp);
+                     temp,
+                     temp2);
       __ Bind(slow_path->exit_label());
       __ MoveRegister(temp2, temp);
       __ StoreIntoObject(instance_reg,
@@ -1725,7 +1726,8 @@ void StoreInstanceFieldInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
 
     __ TryAllocate(compiler->double_class(),
                    slow_path->entry_label(),
-                   temp);
+                   temp,
+                   temp2);
     __ Bind(slow_path->exit_label());
     __ MoveRegister(temp2, temp);
     __ StoreIntoObject(instance_reg,
@@ -1975,7 +1977,8 @@ void LoadFieldInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
 
     __ TryAllocate(compiler->double_class(),
                    slow_path->entry_label(),
-                   result_reg);
+                   result_reg,
+                   temp);
     __ Bind(slow_path->exit_label());
     __ ldr(temp, FieldAddress(instance_reg, offset_in_bytes()));
     __ LoadDFromOffset(value, temp, Double::value_offset() - kHeapObjectTag);
@@ -2791,12 +2794,13 @@ void CheckEitherNonSmiInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
 
 LocationSummary* BoxDoubleInstr::MakeLocationSummary(bool opt) 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;
 }
@@ -2811,7 +2815,8 @@ 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);
 }
@@ -2867,12 +2872,13 @@ void UnboxDoubleInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
 
 LocationSummary* BoxFloat32x4Instr::MakeLocationSummary(bool opt) 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;
 }
@@ -2921,7 +2927,8 @@ 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,
@@ -2972,12 +2979,13 @@ void UnboxFloat32x4Instr::EmitNativeCode(FlowGraphCompiler* compiler) {
 
 LocationSummary* BoxInt32x4Instr::MakeLocationSummary(bool opt) 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;
 }
@@ -3026,7 +3034,8 @@ 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);