Support arguments object access from inlined functions.

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index 3e286efa5a9622f8c2a6287dd16e5df7055137d4..e2abee38d4b916d0ca1729943067d4ac9910ad9f 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -2764,16 +2764,20 @@ void LCodeGen::DoArgumentsElements(LArgumentsElements* instr) {
   Register scratch = scratch0();
   Register result = ToRegister(instr->result());
 
-  // Check if the calling frame is an arguments adaptor frame.
-  Label done, adapted;
-  __ ldr(scratch, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
-  __ ldr(result, MemOperand(scratch, StandardFrameConstants::kContextOffset));
-  __ cmp(result, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
+  if (instr->from_inlined()) {
+    __ add(result, sp, Operand(-2 * kPointerSize));
+  } else {
+    // Check if the calling frame is an arguments adaptor frame.
+    Label done, adapted;
+    __ ldr(scratch, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
+    __ ldr(result, MemOperand(scratch, StandardFrameConstants::kContextOffset));
+    __ cmp(result, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
 
-  // Result is the frame pointer for the frame if not adapted and for the real
-  // frame below the adaptor frame if adapted.
-  __ mov(result, fp, LeaveCC, ne);
-  __ mov(result, scratch, LeaveCC, eq);
+    // Result is the frame pointer for the frame if not adapted and for the real
+    // frame below the adaptor frame if adapted.
+    __ mov(result, fp, LeaveCC, ne);
+    __ mov(result, scratch, LeaveCC, eq);
+  }
 }
 
 
@@ -2907,6 +2911,11 @@ void LCodeGen::DoPushArgument(LPushArgument* instr) {
 }
 
 
+void LCodeGen::DoPop(LPop* instr) {
+  __ Drop(instr->count());
+}
+
+
 void LCodeGen::DoThisFunction(LThisFunction* instr) {
   Register result = ToRegister(instr->result());
   __ LoadHeapObject(result, instr->hydrogen()->closure());