Nitpicking.

runtime/vm/flow_graph_allocator.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.
 
 #include "vm/flow_graph_allocator.h"
 
 #include "vm/bit_vector.h"
 #include "vm/intermediate_language.h"
 #include "vm/il_printer.h"
 #include "vm/flow_graph_builder.h"
@@ skipping 349 matching lines @@
 
 
 void FlowGraphAllocator::BuildLiveRanges() {
   NumberInstructions();
 
   const intptr_t block_count = postorder_.length();
   ASSERT(postorder_[block_count - 1]->IsGraphEntry());
   for (intptr_t i = 0; i < (block_count - 1); i++) {
     BlockEntryInstr* block = postorder_[i];
 
-    // For every SSA value that is live out of this block create an interval
-    // that covers the hole block.  It will be shortened if we encounter a
+    // For every SSA value that is live out of this block, create an interval
+    // that covers the whole block.  It will be shortened if we encounter a
     // definition of this value in this block.
     for (BitVector::Iterator it(live_out_[i]); !it.Done(); it.Advance()) {
       LiveRange* range = GetLiveRange(it.Current());
       range->AddUseInterval(block->start_pos(), block->end_pos());
     }
 
     // Connect outgoing phi-moves that were created in NumberInstructions
     // and find last instruction that contributes to liveness.
     Instruction* current = ConnectOutgoingPhiMoves(block);
 
@@ skipping 1213 matching lines @@
 
   if (FLAG_trace_ssa_allocator) {
     OS::Print("-- ir after allocation -------------------------\n");
     FlowGraphPrinter printer(Function::Handle(), block_order_, true);
     printer.PrintBlocks();
   }
 }
 
 
 }  // namespace dart