Remove special charAt and charCodeAt handling in the ICs.

src/mips/stub-cache-mips.cc

Index: src/mips/stub-cache-mips.cc
diff --git a/src/mips/stub-cache-mips.cc b/src/mips/stub-cache-mips.cc
index 12d9053d22183d960c9104a0ec8294ea18bedadb..c819ce2259158dbce7d626e9fda7986296281abb 100644
--- a/src/mips/stub-cache-mips.cc
+++ b/src/mips/stub-cache-mips.cc
@@ -1872,135 +1872,6 @@ Handle<Code> CallStubCompiler::CompileArrayPopCall(
 }
 
 
-Handle<Code> CallStubCompiler::CompileStringCharCodeAtCall(
-    Handle<Object> object,
-    Handle<JSObject> holder,
-    Handle<Cell> cell,
-    Handle<JSFunction> function,
-    Handle<String> name,
-    Code::StubType type) {
-  // If object is not a string, bail out to regular call.
-  if (!object->IsString() || !cell.is_null()) return Handle<Code>::null();
-
-  Label miss;
-  Label name_miss;
-  Label index_out_of_range;
-
-  Label* index_out_of_range_label = &index_out_of_range;
-
-  if (kind_ == Code::CALL_IC &&
-      (CallICBase::StringStubState::decode(extra_state()) ==
-       DEFAULT_STRING_STUB)) {
-    index_out_of_range_label = &miss;
-  }
-
-  HandlerFrontendHeader(object, holder, name, STRING_CHECK, &name_miss);
-
-  Register receiver = a0;
-  Register index = t1;
-  Register result = a1;
-  const int argc = arguments().immediate();
-  __ lw(receiver, MemOperand(sp, argc * kPointerSize));
-  if (argc > 0) {
-    __ lw(index, MemOperand(sp, (argc - 1) * kPointerSize));
-  } else {
-    __ LoadRoot(index, Heap::kUndefinedValueRootIndex);
-  }
-
-  StringCharCodeAtGenerator generator(receiver,
-                                      index,
-                                      result,
-                                      &miss,  // When not a string.
-                                      &miss,  // When not a number.
-                                      index_out_of_range_label,
-                                      STRING_INDEX_IS_NUMBER);
-  generator.GenerateFast(masm());
-  __ mov(v0, result);
-  __ DropAndRet(argc + 1);
-
-  StubRuntimeCallHelper call_helper;
-  generator.GenerateSlow(masm(), call_helper);
-
-  if (index_out_of_range.is_linked()) {
-    __ bind(&index_out_of_range);
-    __ LoadRoot(v0, Heap::kNanValueRootIndex);
-    __ DropAndRet(argc + 1);
-  }
-
-  __ bind(&miss);
-  // Restore function name in a2.
-  __ li(a2, name);
-  HandlerFrontendFooter(&name_miss);
-
-  // Return the generated code.
-  return GetCode(type, name);
-}
-
-
-Handle<Code> CallStubCompiler::CompileStringCharAtCall(
-    Handle<Object> object,
-    Handle<JSObject> holder,
-    Handle<Cell> cell,
-    Handle<JSFunction> function,
-    Handle<String> name,
-    Code::StubType type) {
-  // If object is not a string, bail out to regular call.
-  if (!object->IsString() || !cell.is_null()) return Handle<Code>::null();
-
-  const int argc = arguments().immediate();
-  Label miss;
-  Label name_miss;
-  Label index_out_of_range;
-  Label* index_out_of_range_label = &index_out_of_range;
-  if (kind_ == Code::CALL_IC &&
-      (CallICBase::StringStubState::decode(extra_state()) ==
-       DEFAULT_STRING_STUB)) {
-    index_out_of_range_label = &miss;
-  }
-
-  HandlerFrontendHeader(object, holder, name, STRING_CHECK, &name_miss);
-
-  Register receiver = a0;
-  Register index = t1;
-  Register scratch = a3;
-  Register result = a1;
-  if (argc > 0) {
-    __ lw(index, MemOperand(sp, (argc - 1) * kPointerSize));
-  } else {
-    __ LoadRoot(index, Heap::kUndefinedValueRootIndex);
-  }
-
-  StringCharAtGenerator generator(receiver,
-                                  index,
-                                  scratch,
-                                  result,
-                                  &miss,  // When not a string.
-                                  &miss,  // When not a number.
-                                  index_out_of_range_label,
-                                  STRING_INDEX_IS_NUMBER);
-  generator.GenerateFast(masm());
-  __ mov(v0, result);
-  __ DropAndRet(argc + 1);
-
-  StubRuntimeCallHelper call_helper;
-  generator.GenerateSlow(masm(), call_helper);
-
-  if (index_out_of_range.is_linked()) {
-    __ bind(&index_out_of_range);
-    __ LoadRoot(v0, Heap::kempty_stringRootIndex);
-    __ DropAndRet(argc + 1);
-  }
-
-  __ bind(&miss);
-  // Restore function name in a2.
-  __ li(a2, name);
-  HandlerFrontendFooter(&name_miss);
-
-  // Return the generated code.
-  return GetCode(type, name);
-}
-
-
 Handle<Code> CallStubCompiler::CompileStringFromCharCodeCall(
     Handle<Object> object,
     Handle<JSObject> holder,