Make safe points in generated code invisible to the debugger

runtime/vm/flow_graph_compiler_mips.cc

 // Copyright (c) 2013, 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.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_MIPS.
 #if defined(TARGET_ARCH_MIPS)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/ast_printer.h"
@@ skipping 1424 matching lines @@
     __ sw(reg, Address(SP, 1 * kWordSize));
     __ LoadObject(TMP, obj);
     __ sw(TMP, Address(SP, 0 * kWordSize));
     if (is_optimizing()) {
       __ BranchLinkPatchable(
           &StubCode::OptimizedIdenticalWithNumberCheckLabel());
     } else {
       __ BranchLinkPatchable(
           &StubCode::UnoptimizedIdenticalWithNumberCheckLabel());
     }
-    AddCurrentDescriptor(PcDescriptors::kRuntimeCall,
-                         Isolate::kNoDeoptId,
-                         token_pos);
+    if (token_pos != Scanner::kDummyTokenIndex) {
+      AddCurrentDescriptor(PcDescriptors::kRuntimeCall,
+                           Isolate::kNoDeoptId,
+                           token_pos);
+    }
     __ TraceSimMsg("EqualityRegConstCompare return");
     __ lw(reg, Address(SP, 1 * kWordSize));  // Restore 'reg'.
     __ addiu(SP, SP, Immediate(2 * kWordSize));  // Discard constant.
     return;
   }
   __ CompareObject(CMPRES1, CMPRES2, reg, obj);
 }
 
 
 void FlowGraphCompiler::EmitEqualityRegRegCompare(Register left,
                                                   Register right,
                                                   bool needs_number_check,
                                                   intptr_t token_pos) {
   __ TraceSimMsg("EqualityRegRegCompare");
   __ Comment("EqualityRegRegCompare");
   if (needs_number_check) {
     __ addiu(SP, SP, Immediate(-2 * kWordSize));
     __ sw(left, Address(SP, 1 * kWordSize));
     __ sw(right, Address(SP, 0 * kWordSize));
     if (is_optimizing()) {
       __ BranchLinkPatchable(
           &StubCode::OptimizedIdenticalWithNumberCheckLabel());
     } else {
       __ BranchLinkPatchable(
           &StubCode::UnoptimizedIdenticalWithNumberCheckLabel());
     }
-    AddCurrentDescriptor(PcDescriptors::kRuntimeCall,
-                         Isolate::kNoDeoptId,
-                         token_pos);
+    if (token_pos != Scanner::kDummyTokenIndex) {
+      AddCurrentDescriptor(PcDescriptors::kRuntimeCall,
+                           Isolate::kNoDeoptId,
+                           token_pos);
+    }
     __ TraceSimMsg("EqualityRegRegCompare return");
     // Stub returns result in CMPRES1. If it is 0, then left and right are
     // equal.
     __ lw(right, Address(SP, 0 * kWordSize));
     __ lw(left, Address(SP, 1 * kWordSize));
     __ addiu(SP, SP, Immediate(2 * kWordSize));
   } else {
     __ slt(CMPRES1, left, right);
     __ slt(CMPRES2, right, left);
   }
@@ skipping 382 matching lines @@
   __ AddImmediate(SP, kDoubleSize);
 }
 
 
 #undef __
 
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_MIPS