Bail for SIMD code in LSE.

Rationale:
LSE does not look at vector load/stores currently,
which potentially breaks anything containing SIMD.
This is a temporary fix to get the mainline clean
until the real solution (looking at simd l/s) goes in.

Test: test-art-host test-art-target

Bug: 64091002
Change-Id: I018685bcd32ab8e0710435bf1d1d95aafd874a33
diff --git a/compiler/optimizing/load_store_elimination.cc b/compiler/optimizing/load_store_elimination.cc
index 98b8592..8a9acf1 100644
--- a/compiler/optimizing/load_store_elimination.cc
+++ b/compiler/optimizing/load_store_elimination.cc
@@ -670,6 +670,11 @@
     return;
   }
 
+  // TODO: analyze VecLoad/VecStore better.
+  if (graph_->HasSIMD()) {
+    return;
+  }
+
   LSEVisitor lse_visitor(graph_, heap_location_collector, side_effects_, stats_);
   for (HBasicBlock* block : graph_->GetReversePostOrder()) {
     lse_visitor.VisitBasicBlock(block);