s390: exploit high-word facility for Smi Ops

src/s390/code-stubs-s390.cc

Index: src/s390/code-stubs-s390.cc
diff --git a/src/s390/code-stubs-s390.cc b/src/s390/code-stubs-s390.cc
index a6b5247423bca7c897862a1e54626a26ee6ed795..f129a0e2bf1a79271c13c1e0417370430a5c564d 100644
--- a/src/s390/code-stubs-s390.cc
+++ b/src/s390/code-stubs-s390.cc
@@ -3831,7 +3831,8 @@ void FastNewSloppyArgumentsStub::Generate(MacroAssembler* masm) {
   Label adaptor_frame, try_allocate, runtime;
   __ LoadP(r6, MemOperand(r9, StandardFrameConstants::kCallerFPOffset));
   __ LoadP(r2, MemOperand(r6, CommonFrameConstants::kContextOrFrameTypeOffset));
-  __ CmpSmiLiteral(r2, Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR), r0);
+  __ LoadSmiLiteral(r0, Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR));
+  __ CmpP(r2, r0);
   __ beq(&adaptor_frame);
 
   // No adaptor, parameter count = argument count.