Iterate over PcDescriptors only via iterators, not via an index. (preparation for more compression …

runtime/vm/flow_graph_compiler_arm.cc

Index: runtime/vm/flow_graph_compiler_arm.cc
===================================================================
--- runtime/vm/flow_graph_compiler_arm.cc	(revision 38030)
+++ runtime/vm/flow_graph_compiler_arm.cc	(working copy)
@@ -1106,7 +1106,7 @@
 
 void FlowGraphCompiler::GenerateCall(intptr_t token_pos,
                                      const ExternalLabel* label,
-                                     PcDescriptors::Kind kind,
+                                     RawPcDescriptors::Kind kind,
                                      LocationSummary* locs) {
   __ BranchLinkPatchable(label);
   AddCurrentDescriptor(kind, Isolate::kNoDeoptId, token_pos);
@@ -1117,7 +1117,7 @@
 void FlowGraphCompiler::GenerateDartCall(intptr_t deopt_id,
                                          intptr_t token_pos,
                                          const ExternalLabel* label,
-                                         PcDescriptors::Kind kind,
+                                         RawPcDescriptors::Kind kind,
                                          LocationSummary* locs) {
   __ BranchLinkPatchable(label);
   AddCurrentDescriptor(kind, deopt_id, token_pos);
@@ -1130,7 +1130,8 @@
   } else {
     // Add deoptimization continuation point after the call and before the
     // arguments are removed.
-    AddCurrentDescriptor(PcDescriptors::kDeopt, deopt_id_after, token_pos);
+    AddCurrentDescriptor(RawPcDescriptors::kDeopt,
+        deopt_id_after, token_pos);
   }
 }
 
@@ -1141,7 +1142,7 @@
                                             intptr_t argument_count,
                                             LocationSummary* locs) {
   __ CallRuntime(entry, argument_count);
-  AddCurrentDescriptor(PcDescriptors::kOther, deopt_id, token_pos);
+  AddCurrentDescriptor(RawPcDescriptors::kOther, deopt_id, token_pos);
   RecordSafepoint(locs);
   if (deopt_id != Isolate::kNoDeoptId) {
     // Marks either the continuation point in unoptimized code or the
@@ -1152,7 +1153,7 @@
     } else {
       // Add deoptimization continuation point after the call and before the
       // arguments are removed.
-      AddCurrentDescriptor(PcDescriptors::kDeopt,
+      AddCurrentDescriptor(RawPcDescriptors::kDeopt,
                            deopt_id_after,
                            token_pos);
     }
@@ -1196,7 +1197,7 @@
   GenerateDartCall(deopt_id,
                    token_pos,
                    target_label,
-                   PcDescriptors::kIcCall,
+                   RawPcDescriptors::kIcCall,
                    locs);
   __ Drop(argument_count);
 }
@@ -1214,7 +1215,7 @@
   GenerateDartCall(deopt_id,
                    token_pos,
                    target_label,
-                   PcDescriptors::kIcCall,
+                   RawPcDescriptors::kIcCall,
                    locs);
   __ Drop(argument_count);
 #if defined(DEBUG)
@@ -1277,7 +1278,8 @@
   __ LoadObject(R4, arguments_descriptor);
   __ AddImmediate(R1, Instructions::HeaderSize() - kHeapObjectTag);
   __ blx(R1);
-  AddCurrentDescriptor(PcDescriptors::kOther, Isolate::kNoDeoptId, token_pos);
+  AddCurrentDescriptor(RawPcDescriptors::kOther,
+      Isolate::kNoDeoptId, token_pos);
   RecordSafepoint(locs);
   AddDeoptIndexAtCall(Isolate::ToDeoptAfter(deopt_id), token_pos);
   __ Drop(argument_count);
@@ -1304,7 +1306,7 @@
   GenerateDartCall(deopt_id,
                    token_pos,
                    &target_label,
-                   PcDescriptors::kUnoptStaticCall,
+                   RawPcDescriptors::kUnoptStaticCall,
                    locs);
   __ Drop(argument_count);
 #if defined(DEBUG)
@@ -1326,7 +1328,7 @@
   GenerateDartCall(deopt_id,
                    token_pos,
                    &StubCode::CallStaticFunctionLabel(),
-                   PcDescriptors::kOptStaticCall,
+                   RawPcDescriptors::kOptStaticCall,
                    locs);
   AddStaticCallTarget(function);
   __ Drop(argument_count);
@@ -1349,7 +1351,7 @@
           &StubCode::UnoptimizedIdenticalWithNumberCheckLabel());
     }
     if (token_pos != Scanner::kNoSourcePos) {
-      AddCurrentDescriptor(PcDescriptors::kRuntimeCall,
+      AddCurrentDescriptor(RawPcDescriptors::kRuntimeCall,
                            Isolate::kNoDeoptId,
                            token_pos);
     }
@@ -1379,7 +1381,7 @@
           &StubCode::UnoptimizedIdenticalWithNumberCheckLabel());
     }
     if (token_pos != Scanner::kNoSourcePos) {
-      AddCurrentDescriptor(PcDescriptors::kRuntimeCall,
+      AddCurrentDescriptor(RawPcDescriptors::kRuntimeCall,
                            Isolate::kNoDeoptId,
                            token_pos);
     }
@@ -1503,7 +1505,7 @@
     GenerateDartCall(deopt_id,
                      token_index,
                      &StubCode::CallStaticFunctionLabel(),
-                     PcDescriptors::kOptStaticCall,
+                     RawPcDescriptors::kOptStaticCall,
                      locs);
     const Function& function = *sorted[i].target;
     AddStaticCallTarget(function);