Mode clean-up pt 1: rename classic/non-strict mode to sloppy mode

src/x64/lithium-codegen-x64.cc

Index: src/x64/lithium-codegen-x64.cc
diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc
index 72091c3e4d371e6258e83317f2177b306c25cab3..7c805bfedadc60e83bf862de1dfb401e0c5cf6de 100644
--- a/src/x64/lithium-codegen-x64.cc
+++ b/src/x64/lithium-codegen-x64.cc
@@ -154,10 +154,10 @@ bool LCodeGen::GeneratePrologue() {
     }
 #endif
 
-    // Classic mode functions need to replace the receiver with the global proxy
+    // Sloppy mode functions need to replace the receiver with the global proxy
     // when called as functions (without an explicit receiver object).
     if (info_->this_has_uses() &&
-        info_->is_classic_mode() &&
+        info_->is_sloppy_mode() &&
         !info_->is_native()) {
       Label ok;
       StackArgumentsAccessor args(rsp, scope()->num_parameters());
@@ -2943,7 +2943,7 @@ void LCodeGen::DoLoadKeyedExternalArray(LLoadKeyed* instr) {
       case FAST_HOLEY_SMI_ELEMENTS:
       case FAST_HOLEY_DOUBLE_ELEMENTS:
       case DICTIONARY_ELEMENTS:
-      case NON_STRICT_ARGUMENTS_ELEMENTS:
+      case SLOPPY_ARGUMENTS_ELEMENTS:
         UNREACHABLE();
         break;
     }
@@ -4132,7 +4132,7 @@ void LCodeGen::DoStoreKeyedExternalArray(LStoreKeyed* instr) {
       case FAST_HOLEY_SMI_ELEMENTS:
       case FAST_HOLEY_DOUBLE_ELEMENTS:
       case DICTIONARY_ELEMENTS:
-      case NON_STRICT_ARGUMENTS_ELEMENTS:
+      case SLOPPY_ARGUMENTS_ELEMENTS:
         UNREACHABLE();
         break;
     }