[arm] Don't ask for compressed pointers in VisitStore

Pointer compression is not supported in arm32 and we will not encounter
those MachineRepresentations.

Bug: v8:7703
Change-Id: I72c94d57b27710bdca54d649755a91e869b4947e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2546686
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Auto-Submit: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71256}

src/compiler/backend/arm/instruction-selector-arm.cc

@@ -616,8 +616,7 @@ void InstructionSelector::VisitStore(Node* node) {
   WriteBarrierKind write_barrier_kind = store_rep.write_barrier_kind();
   MachineRepresentation rep = store_rep.representation();
 
-  if (FLAG_enable_unconditional_write_barriers &&
-      CanBeTaggedOrCompressedPointer(rep)) {
+  if (FLAG_enable_unconditional_write_barriers && CanBeTaggedPointer(rep)) {
     write_barrier_kind = kFullWriteBarrier;
   }