Remove strong mode support from property loads.

src/ic/arm/ic-arm.cc

Index: src/ic/arm/ic-arm.cc
diff --git a/src/ic/arm/ic-arm.cc b/src/ic/arm/ic-arm.cc
index a0281abc90e701740713353e89f72ac14d9688a6..14ed8b41a56bb4b86c3b30077c9eebce2347939a 100644
--- a/src/ic/arm/ic-arm.cc
+++ b/src/ic/arm/ic-arm.cc
@@ -157,8 +157,7 @@ static void GenerateKeyedLoadReceiverCheck(MacroAssembler* masm,
 static void GenerateFastArrayLoad(MacroAssembler* masm, Register receiver,
                                   Register key, Register elements,
                                   Register scratch1, Register scratch2,
-                                  Register result, Label* slow,
-                                  LanguageMode language_mode) {
+                                  Register result, Label* slow) {
   // Register use:
   //
   // receiver - holds the receiver on entry.
@@ -215,13 +214,8 @@ static void GenerateFastArrayLoad(MacroAssembler* masm, Register receiver,
   __ jmp(&check_next_prototype);
 
   __ bind(&absent);
-  if (is_strong(language_mode)) {
-    // Strong mode accesses must throw in this case, so call the runtime.
-    __ jmp(slow);
-  } else {
-    __ LoadRoot(result, Heap::kUndefinedValueRootIndex);
-    __ jmp(&done);
-  }
+  __ LoadRoot(result, Heap::kUndefinedValueRootIndex);
+  __ jmp(&done);
 
   __ bind(&in_bounds);
   // Fast case: Do the load.
@@ -264,8 +258,7 @@ static void GenerateKeyNameCheck(MacroAssembler* masm, Register key,
   __ bind(&unique);
 }
 
-
-void LoadIC::GenerateNormal(MacroAssembler* masm, LanguageMode language_mode) {
+void LoadIC::GenerateNormal(MacroAssembler* masm) {
   Register dictionary = r0;
   DCHECK(!dictionary.is(LoadDescriptor::ReceiverRegister()));
   DCHECK(!dictionary.is(LoadDescriptor::NameRegister()));
@@ -280,7 +273,7 @@ void LoadIC::GenerateNormal(MacroAssembler* masm, LanguageMode language_mode) {
 
   // Dictionary load failed, go slow (but don't miss).
   __ bind(&slow);
-  GenerateRuntimeGetProperty(masm, language_mode);
+  GenerateRuntimeGetProperty(masm);
 }
 
 
@@ -312,17 +305,14 @@ void LoadIC::GenerateMiss(MacroAssembler* masm) {
   __ TailCallRuntime(Runtime::kLoadIC_Miss);
 }
 
-
-void LoadIC::GenerateRuntimeGetProperty(MacroAssembler* masm,
-                                        LanguageMode language_mode) {
+void LoadIC::GenerateRuntimeGetProperty(MacroAssembler* masm) {
   // The return address is in lr.
 
   __ mov(LoadIC_TempRegister(), LoadDescriptor::ReceiverRegister());
   __ Push(LoadIC_TempRegister(), LoadDescriptor::NameRegister());
 
   // Do tail-call to runtime routine.
-  __ TailCallRuntime(is_strong(language_mode) ? Runtime::kGetPropertyStrong
-                                              : Runtime::kGetProperty);
+  __ TailCallRuntime(Runtime::kGetProperty);
 }
 
 
@@ -340,22 +330,17 @@ void KeyedLoadIC::GenerateMiss(MacroAssembler* masm) {
   __ TailCallRuntime(Runtime::kKeyedLoadIC_Miss);
 }
 
-
-void KeyedLoadIC::GenerateRuntimeGetProperty(MacroAssembler* masm,
-                                             LanguageMode language_mode) {
+void KeyedLoadIC::GenerateRuntimeGetProperty(MacroAssembler* masm) {
   // The return address is in lr.
 
   __ Push(LoadDescriptor::ReceiverRegister(), LoadDescriptor::NameRegister());
 
   // Perform tail call to the entry.
   // Do tail-call to runtime routine.
-  __ TailCallRuntime(is_strong(language_mode) ? Runtime::kKeyedGetPropertyStrong
-                                              : Runtime::kKeyedGetProperty);
+  __ TailCallRuntime(Runtime::kKeyedGetProperty);
 }
 
-
-void KeyedLoadIC::GenerateMegamorphic(MacroAssembler* masm,
-                                      LanguageMode language_mode) {
+void KeyedLoadIC::GenerateMegamorphic(MacroAssembler* masm) {
   // The return address is in lr.
   Label slow, check_name, index_smi, index_name, property_array_property;
   Label probe_dictionary, check_number_dictionary;
@@ -379,8 +364,7 @@ void KeyedLoadIC::GenerateMegamorphic(MacroAssembler* masm,
   // Check the receiver's map to see if it has fast elements.
   __ CheckFastElements(r0, r3, &check_number_dictionary);
 
-  GenerateFastArrayLoad(masm, receiver, key, r0, r3, r4, r0, &slow,
-                        language_mode);
+  GenerateFastArrayLoad(masm, receiver, key, r0, r3, r4, r0, &slow);
   __ IncrementCounter(isolate->counters()->ic_keyed_load_generic_smi(), 1, r4,
                       r3);
   __ Ret();
@@ -403,7 +387,7 @@ void KeyedLoadIC::GenerateMegamorphic(MacroAssembler* masm,
   __ bind(&slow);
   __ IncrementCounter(isolate->counters()->ic_keyed_load_generic_slow(), 1, r4,
                       r3);
-  GenerateRuntimeGetProperty(masm, language_mode);
+  GenerateRuntimeGetProperty(masm);
 
   __ bind(&check_name);
   GenerateKeyNameCheck(masm, key, r0, r3, &index_name, &slow);