Allow more virtual registers to be encoded in LUnallocated.

src/compiler.cc

Index: src/compiler.cc
diff --git a/src/compiler.cc b/src/compiler.cc
index dce817129c0d339b686b1423015e6525dbb94fc4..adb6eaf8d84b8059a87b2d2be55e7398eb04c9d7 100644
--- a/src/compiler.cc
+++ b/src/compiler.cc
@@ -299,14 +299,14 @@ OptimizingCompiler::Status OptimizingCompiler::CreateGraph() {
   //
   // The encoding is as a signed value, with parameters and receiver using
   // the negative indices and locals the non-negative ones.
-  const int parameter_limit = -LUnallocated::kMinFixedIndex;
+  const int parameter_limit = -LUnallocated::kMinFixedSlotIndex;
   Scope* scope = info()->scope();
   if ((scope->num_parameters() + 1) > parameter_limit) {
     info()->set_bailout_reason("too many parameters");
     return AbortOptimization();
   }
 
-  const int locals_limit = LUnallocated::kMaxFixedIndex;
+  const int locals_limit = LUnallocated::kMaxFixedSlotIndex;
   if (!info()->osr_ast_id().IsNone() &&
       scope->num_parameters() + 1 + scope->num_stack_slots() > locals_limit) {
     info()->set_bailout_reason("too many parameters/locals");