--- a/js/src/jit/RegisterAllocator.cpp
+++ b/js/src/jit/RegisterAllocator.cpp
@@ -544,17 +544,17 @@ RegisterAllocator::getMoveGroupAfter(LIn
 
     ins->block()->insertAfter(ins, moves);
     return moves;
 }
 
 void
 RegisterAllocator::dumpInstructions()
 {
-#ifdef DEBUG
+#ifdef JS_JITSPEW
     fprintf(stderr, "Instructions:\n");
 
     for (size_t blockIndex = 0; blockIndex < graph.numBlocks(); blockIndex++) {
         LBlock* block = graph.getBlock(blockIndex);
         MBasicBlock* mir = block->mir();
 
         fprintf(stderr, "\nBlock %lu", static_cast<unsigned long>(blockIndex));
         for (size_t i = 0; i < mir->numSuccessors(); i++)
@@ -605,10 +605,10 @@ RegisterAllocator::dumpInstructions()
                 if (!alloc->isBogus())
                     fprintf(stderr, " [use %s]", alloc->toString().get());
             }
 
             fprintf(stderr, "\n");
         }
     }
     fprintf(stderr, "\n");
-#endif // DEBUG
+#endif // JS_JITSPEW
 }