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

runtime/vm/intermediate_language_arm64.cc

Index: runtime/vm/intermediate_language_arm64.cc
===================================================================
--- runtime/vm/intermediate_language_arm64.cc	(revision 38030)
+++ runtime/vm/intermediate_language_arm64.cc	(working copy)
@@ -214,7 +214,7 @@
   __ LoadImmediate(R5, 0, PP);
   __ AddImmediate(R2, R2, Instructions::HeaderSize() - kHeapObjectTag, PP);
   __ blr(R2);
-  compiler->AddCurrentDescriptor(PcDescriptors::kClosureCall,
+  compiler->AddCurrentDescriptor(RawPcDescriptors::kClosureCall,
                                  deopt_id(),
                                  token_pos());
   compiler->RecordSafepoint(locs());
@@ -226,7 +226,7 @@
   } else {
     // Add deoptimization continuation point after the call and before the
     // arguments are removed.
-    compiler->AddCurrentDescriptor(PcDescriptors::kDeopt,
+    compiler->AddCurrentDescriptor(RawPcDescriptors::kDeopt,
                                    deopt_id_after,
                                    token_pos());
   }
@@ -796,7 +796,7 @@
   __ LoadImmediate(R1, argc_tag, PP);
   compiler->GenerateCall(token_pos(),
                          stub_entry,
-                         PcDescriptors::kOther,
+                         RawPcDescriptors::kOther,
                          locs());
   __ Pop(result);
 }
@@ -1619,7 +1619,7 @@
     compiler->SaveLiveRegisters(locs);
     compiler->GenerateCall(Scanner::kNoSourcePos,  // No token position.
                            &label,
-                           PcDescriptors::kOther,
+                           RawPcDescriptors::kOther,
                            locs);
     __ mov(locs->temp(0).reg(), R0);
     compiler->RestoreLiveRegisters(locs);
@@ -1964,7 +1964,7 @@
   ASSERT(locs()->in(kLengthPos).reg() == R2);
   compiler->GenerateCall(token_pos(),
                          &StubCode::AllocateArrayLabel(),
-                         PcDescriptors::kOther,
+                         RawPcDescriptors::kOther,
                          locs());
   ASSERT(locs()->out(0).reg() == R0);
 }
@@ -1989,7 +1989,7 @@
     compiler->SaveLiveRegisters(locs);
     compiler->GenerateCall(Scanner::kNoSourcePos,  // No token position.
                            &label,
-                           PcDescriptors::kOther,
+                           RawPcDescriptors::kOther,
                            locs);
     __ mov(locs->out(0).reg(), R0);
     compiler->RestoreLiveRegisters(locs);
@@ -2021,7 +2021,7 @@
     compiler->SaveLiveRegisters(locs);
     compiler->GenerateCall(Scanner::kNoSourcePos,  // No token position.
                            &label,
-                           PcDescriptors::kOther,
+                           RawPcDescriptors::kOther,
                            locs);
     __ mov(locs->out(0).reg(), R0);
     compiler->RestoreLiveRegisters(locs);
@@ -2053,7 +2053,7 @@
     compiler->SaveLiveRegisters(locs);
     compiler->GenerateCall(Scanner::kNoSourcePos,  // No token position.
                            &label,
-                           PcDescriptors::kOther,
+                           RawPcDescriptors::kOther,
                            locs);
     __ mov(locs->out(0).reg(), R0);
     compiler->RestoreLiveRegisters(locs);
@@ -2329,7 +2329,7 @@
   const ExternalLabel label(StubCode::AllocateContextEntryPoint());
   compiler->GenerateCall(token_pos(),
                          &label,
-                         PcDescriptors::kOther,
+                         RawPcDescriptors::kOther,
                          locs());
 }
 
@@ -2442,7 +2442,7 @@
 
     if (FLAG_use_osr && !compiler->is_optimizing() && instruction_->in_loop()) {
       // In unoptimized code, record loop stack checks as possible OSR entries.
-      compiler->AddCurrentDescriptor(PcDescriptors::kOsrEntry,
+      compiler->AddCurrentDescriptor(RawPcDescriptors::kOsrEntry,
                                      instruction_->deopt_id(),
                                      0);  // No token position.
     }
@@ -3208,7 +3208,7 @@
     compiler->SaveLiveRegisters(locs);
     compiler->GenerateCall(Scanner::kNoSourcePos,  // No token position.
                            &label,
-                           PcDescriptors::kOther,
+                           RawPcDescriptors::kOther,
                            locs);
     __ mov(locs->out(0).reg(), R0);
     compiler->RestoreLiveRegisters(locs);
@@ -5168,7 +5168,7 @@
     // On ARM64 the deoptimization descriptor points after the edge counter
     // code so that we can reuse the same pattern matching code as at call
     // sites, which matches backwards from the end of the pattern.
-    compiler->AddCurrentDescriptor(PcDescriptors::kDeopt,
+    compiler->AddCurrentDescriptor(RawPcDescriptors::kDeopt,
                                    deopt_id_,
                                    Scanner::kNoSourcePos);
   }
@@ -5194,7 +5194,7 @@
     // points after the edge counter code so that we can reuse the same
     // pattern matching code as at call sites, which matches backwards from
     // the end of the pattern.
-    compiler->AddCurrentDescriptor(PcDescriptors::kDeopt,
+    compiler->AddCurrentDescriptor(RawPcDescriptors::kDeopt,
                                    GetDeoptId(),
                                    Scanner::kNoSourcePos);
   }
@@ -5336,7 +5336,7 @@
   const ExternalLabel label(stub.EntryPoint());
   compiler->GenerateCall(token_pos(),
                          &label,
-                         PcDescriptors::kOther,
+                         RawPcDescriptors::kOther,
                          locs());
   __ Drop(ArgumentCount());  // Discard arguments.
 }