s390: Fix DoArgumentsElements where should use CmpP

R=bjaideep@ca.ibm.com, joransiu@ca.ibm.com
BUG=

Review-Url: https://codereview.chromium.org/2651673009
Cr-Commit-Position: refs/heads/master@{#42663}

src/crankshaft/s390/lithium-codegen-s390.cc

@@ -3086,7 +3086,8 @@ void LCodeGen::DoArgumentsElements(LArgumentsElements* instr) {
     __ LoadP(
         result,
         MemOperand(scratch, CommonFrameConstants::kContextOrFrameTypeOffset));
-    __ CmpSmiLiteral(result, Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR), r0);
+    __ LoadSmiLiteral(r0, Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR));
+    __ CmpP(result, r0);
 
     // Result is the frame pointer for the frame if not adapted and for the real
     // frame below the adaptor frame if adapted.