[compiler] Unify printing of schedule block ids.

src/compiler/schedule.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/schedule.h"
 
 #include "src/compiler/node.h"
 #include "src/compiler/node-properties.h"
 #include "src/ostreams.h"
 
@@ skipping 374 matching lines @@
     nodeid_to_block_.resize(node->id() + 1);
   }
   nodeid_to_block_[node->id()] = block;
 }
 
 
 std::ostream& operator<<(std::ostream& os, const Schedule& s) {
   for (BasicBlock* block :
        ((s.RpoBlockCount() == 0) ? *s.all_blocks() : *s.rpo_order())) {
     if (block->rpo_number() == -1) {
-      os << "--- BLOCK B" << block->id().ToInt() << " (block id)";
+      os << "--- BLOCK id:" << block->id().ToInt();
     } else {
       os << "--- BLOCK B" << block->rpo_number();
     }
     if (block->deferred()) os << " (deferred)";
     if (block->PredecessorCount() != 0) os << " <- ";
     bool comma = false;
     for (BasicBlock const* predecessor : block->predecessors()) {
       if (comma) os << ", ";
       comma = true;
       if (predecessor->rpo_number() == -1) {
-        os << "B" << predecessor->id().ToInt();
+        os << "id:" << predecessor->id().ToInt();
       } else {
         os << "B" << predecessor->rpo_number();
       }
     }
     os << " ---\n";
     for (Node* node : *block) {
       os << "  " << *node;
       if (NodeProperties::IsTyped(node)) {
         Type* type = NodeProperties::GetType(node);
         os << " : ";
         type->PrintTo(os);
       }
       os << "\n";
     }
     BasicBlock::Control control = block->control();
     if (control != BasicBlock::kNone) {
       os << "  ";
       if (block->control_input() != nullptr) {
         os << *block->control_input();
       } else {
         os << "Goto";
       }
       os << " -> ";
       comma = false;
       for (BasicBlock const* successor : block->successors()) {
         if (comma) os << ", ";
         comma = true;
         if (successor->rpo_number() == -1) {
-          os << "B" << successor->id().ToInt();
+          os << "id:" << successor->id().ToInt();
         } else {
           os << "B" << successor->rpo_number();
         }
       }
       os << "\n";
     }
   }
   return os;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8