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 1266a3bd1873c73fcf6bf6b47ab04702eeb1132f..4a46689fef2b2b11c9cdc47641129e3f2539d15f 100644
--- a/runtime/vm/intermediate_language_arm.cc
+++ b/runtime/vm/intermediate_language_arm.cc
@@ -2540,12 +2540,13 @@ 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;
 }
@@ -2592,7 +2593,8 @@ 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);
 }
@@ -2648,12 +2650,13 @@ 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;
 }
@@ -2702,7 +2705,8 @@ 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,
@@ -2753,12 +2757,13 @@ 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;
 }
@@ -2807,7 +2812,8 @@ 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);