Disable concurrent marking/sweeping, and background compilation on ARMv5TE

runtime/vm/intrinsifier.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 // Class for intrinsifying functions.
 
 #include "vm/assembler.h"
 #include "vm/compiler.h"
 #include "vm/cpu.h"
 #include "vm/flags.h"
 #include "vm/flow_graph.h"
@@ skipping 570 matching lines @@
                            Thread::kNoDeoptId,
                            builder.TokenPos()));
   Definition* result = builder.AddDefinition(
       BoxInstr::Create(kUnboxedUint32, new Value(unboxed_value)));
   builder.AddIntrinsicReturn(new Value(result));
   return true;
 }
 
 
 bool Intrinsifier::Build_Float64ArraySetIndexed(FlowGraph* flow_graph) {
-  if (!FlowGraphCompiler::SupportsUnboxedDoubles()) return false;
+  if (!FlowGraphCompiler::SupportsUnboxedDoubles()) {
+    return false;
+  }
 
   GraphEntryInstr* graph_entry = flow_graph->graph_entry();
   TargetEntryInstr* normal_entry = graph_entry->normal_entry();
   BlockBuilder builder(flow_graph, normal_entry);
 
   Definition* value = builder.AddParameter(1);
   Definition* index = builder.AddParameter(2);
   Definition* array = builder.AddParameter(3);
 
   PrepareIndexedOp(&builder, array, index, TypedData::length_offset());
@@ skipping 25 matching lines @@
                             Thread::kNoDeoptId,
                             builder.TokenPos()));
   // Return null.
   Definition* null_def = builder.AddNullDefinition();
   builder.AddIntrinsicReturn(new Value(null_def));
   return true;
 }
 
 
 bool Intrinsifier::Build_Float64ArrayGetIndexed(FlowGraph* flow_graph) {
-  if (!FlowGraphCompiler::SupportsUnboxedDoubles()) return false;
+  if (!FlowGraphCompiler::SupportsUnboxedDoubles()) {
+    return false;
+  }
 
   GraphEntryInstr* graph_entry = flow_graph->graph_entry();
   TargetEntryInstr* normal_entry = graph_entry->normal_entry();
   BlockBuilder builder(flow_graph, normal_entry);
 
   Definition* index = builder.AddParameter(1);
   Definition* array = builder.AddParameter(2);
 
   PrepareIndexedOp(&builder, array, index, TypedData::length_offset());
 
@@ skipping 128 matching lines @@
 }
 
 
 bool Intrinsifier::Build_Float32x4Add(FlowGraph* flow_graph) {
   return BuildBinaryFloat32x4Op(flow_graph, Token::kADD);
 }
 
 
 static bool BuildFloat32x4Shuffle(FlowGraph* flow_graph,
                                   MethodRecognizer::Kind kind) {
-  if (!FlowGraphCompiler::SupportsUnboxedSimd128()) return false;
+  if (!FlowGraphCompiler::SupportsUnboxedDoubles() ||
+      !FlowGraphCompiler::SupportsUnboxedSimd128()) {
+    return false;
+  }
   GraphEntryInstr* graph_entry = flow_graph->graph_entry();
   TargetEntryInstr* normal_entry = graph_entry->normal_entry();
   BlockBuilder builder(flow_graph, normal_entry);
 
   Definition* receiver = builder.AddParameter(1);
 
   Definition* unboxed_receiver =
       builder.AddUnboxInstr(kUnboxedFloat32x4,
                             new Value(receiver),
                             /* is_checked = */ true);
@@ skipping 217 matching lines @@
                                   new Value(length),
                                   kNoStoreBarrier,
                                   builder.TokenPos()));
   Definition* null_def = builder.AddNullDefinition();
   builder.AddIntrinsicReturn(new Value(null_def));
   return true;
 }
 
 
 bool Intrinsifier::Build_DoubleFlipSignBit(FlowGraph* flow_graph) {
+  if (!FlowGraphCompiler::SupportsUnboxedDoubles()) {
+    return false;
+  }
   GraphEntryInstr* graph_entry = flow_graph->graph_entry();
   TargetEntryInstr* normal_entry = graph_entry->normal_entry();
   BlockBuilder builder(flow_graph, normal_entry);
 
   Definition* receiver = builder.AddParameter(1);
   Definition* unboxed_value =
       builder.AddUnboxInstr(kUnboxedDouble,
                             new Value(receiver),
                             /* is_checked = */ true);
   Definition* unboxed_result = builder.AddDefinition(
       new UnaryDoubleOpInstr(Token::kNEGATE,
                              new Value(unboxed_value),
                              Thread::kNoDeoptId));
   Definition* result = builder.AddDefinition(
       BoxInstr::Create(kUnboxedDouble, new Value(unboxed_result)));
   builder.AddIntrinsicReturn(new Value(result));
   return true;
 }
 
 
 static bool BuildInvokeMathCFunction(BlockBuilder* builder,
                                      MethodRecognizer::Kind kind,
                                      intptr_t num_parameters = 1) {
+  if (!FlowGraphCompiler::SupportsUnboxedDoubles()) {
+    return false;
+  }
   ZoneGrowableArray<Value*>* args =
       new ZoneGrowableArray<Value*>(num_parameters);
 
   for (intptr_t i = 0; i < num_parameters; i++) {
     const intptr_t parameter_index = (num_parameters - i);
     Definition* value = builder->AddParameter(parameter_index);
     Definition* unboxed_value =
         builder->AddUnboxInstr(kUnboxedDouble, value, /* is_checked = */ false);
     args->Add(new Value(unboxed_value));
   }
@@ skipping 160 matching lines @@
   TargetEntryInstr* normal_entry = graph_entry->normal_entry();
   BlockBuilder builder(flow_graph, normal_entry);
 
   return BuildInvokeMathCFunction(&builder,
                                   MethodRecognizer::kDoubleRound);
 }
 #endif  // !defined(TARGET_ARCH_DBC)
 
 
 }  // namespace dart