Re-landing of "replace TrySync with Metadata".

runtime/vm/intermediate_language_arm64.cc

Index: runtime/vm/intermediate_language_arm64.cc
diff --git a/runtime/vm/intermediate_language_arm64.cc b/runtime/vm/intermediate_language_arm64.cc
index 642bb8f395c823ae447bfc68549008b7b7c2f9b5..c502b0f6f0a1893af9a0d65a9dceec257cb4acd0 100644
--- a/runtime/vm/intermediate_language_arm64.cc
+++ b/runtime/vm/intermediate_language_arm64.cc
@@ -237,6 +237,7 @@ void ClosureCallInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   //??
   __ blr(R2);
   compiler->RecordSafepoint(locs());
+  compiler->EmitCatchEntryState();
   // Marks either the continuation point in unoptimized code or the
   // deoptimization point in optimized code, after call.
   const intptr_t deopt_id_after = Thread::ToDeoptAfter(deopt_id());
@@ -2206,8 +2207,9 @@ void CreateArrayInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   const Code& stub = Code::ZoneHandle(compiler->zone(),
                                       StubCode::AllocateArray_entry()->code());
   compiler->AddStubCallTarget(stub);
-  compiler->GenerateCall(token_pos(), *StubCode::AllocateArray_entry(),
-                         RawPcDescriptors::kOther, locs());
+  compiler->GenerateCallWithDeopt(token_pos(), deopt_id(),
+                                  *StubCode::AllocateArray_entry(),
+                                  RawPcDescriptors::kOther, locs());
   ASSERT(locs()->out(0).reg() == kResultReg);
 }
 
@@ -2827,6 +2829,10 @@ class CheckedSmiSlowPath : public SlowPathCode {
     locs->live_registers()->Remove(Location::RegisterLocation(result));
 
     compiler->SaveLiveRegisters(locs);
+    if (instruction_->env() != NULL) {
+      Environment* env = compiler->SlowPathEnvironmentFor(instruction_);
+      compiler->pending_deoptimization_env_ = env;
+    }
     __ Push(locs->in(0).reg());
     __ Push(locs->in(1).reg());
     compiler->EmitMegamorphicInstanceCall(
@@ -2837,6 +2843,7 @@ class CheckedSmiSlowPath : public SlowPathCode {
     __ mov(result, R0);
     compiler->RestoreLiveRegisters(locs);
     __ b(exit_label());
+    compiler->pending_deoptimization_env_ = NULL;
   }
 
  private:
@@ -2964,6 +2971,10 @@ class CheckedSmiComparisonSlowPath : public SlowPathCode {
     locs->live_registers()->Remove(Location::RegisterLocation(result));
 
     compiler->SaveLiveRegisters(locs);
+    if (instruction_->env() != NULL) {
+      Environment* env = compiler->SlowPathEnvironmentFor(instruction_);
+      compiler->pending_deoptimization_env_ = env;
+    }
     __ Push(locs->in(0).reg());
     __ Push(locs->in(1).reg());
     compiler->EmitMegamorphicInstanceCall(
@@ -2973,6 +2984,7 @@ class CheckedSmiComparisonSlowPath : public SlowPathCode {
         /* slow_path_argument_count = */ 2);
     __ mov(result, R0);
     compiler->RestoreLiveRegisters(locs);
+    compiler->pending_deoptimization_env_ = NULL;
     if (merged_) {
       __ CompareObject(result, Bool::True());
       __ b(
@@ -5546,6 +5558,7 @@ class RangeErrorSlowPath : public SlowPathCode {
     }
     __ Bind(entry_label());
     LocationSummary* locs = instruction_->locs();
+    compiler->SaveLiveRegisters(locs);
     __ Push(locs->in(0).reg());
     __ Push(locs->in(1).reg());
     __ CallRuntime(kRangeErrorRuntimeEntry, 2);
@@ -5553,6 +5566,8 @@ class RangeErrorSlowPath : public SlowPathCode {
         RawPcDescriptors::kOther, compiler->assembler()->CodeSize(),
         instruction_->deopt_id(), instruction_->token_pos(), try_index_);
     compiler->RecordSafepoint(locs, 2);
+    Environment* env = compiler->SlowPathEnvironmentFor(instruction_);
+    compiler->EmitCatchEntryState(env, try_index_);
     __ brk(0);
   }