ART: Fix crash in gtests

SsaLivenessAnalysis was crashing after change of iteration order in
142377 because gtests do not always build reverse post order.

Change-Id: If5ad5b7c52040b119c4415f0b942988049fa3c16

1 files changed, 6 insertions, 0 deletions

diff --git a/compiler/optimizing/register_allocator_test.cc b/compiler/optimizing/register_allocator_test.cc
index b757a3b9b9..7a2d84b056 100644
--- a/compiler/optimizing/register_allocator_test.cc
+++ b/compiler/optimizing/register_allocator_test.cc
@@ -596,6 +596,8 @@ static HGraph* BuildFieldReturn(ArenaAllocator* allocator,
   graph->AddBlock(exit);
   block->AddSuccessor(exit);
   exit->AddInstruction(new (allocator) HExit());
+
+  graph->BuildDominatorTree();
   return graph;
 }
 
@@ -658,6 +660,8 @@ static HGraph* BuildTwoSubs(ArenaAllocator* allocator,
   block->AddInstruction(*second_sub);
 
   block->AddInstruction(new (allocator) HExit());
+
+  graph->BuildDominatorTree();
   return graph;
 }
 
@@ -719,6 +723,8 @@ static HGraph* BuildDiv(ArenaAllocator* allocator,
   block->AddInstruction(*div);
 
   block->AddInstruction(new (allocator) HExit());
+
+  graph->BuildDominatorTree();
   return graph;
 }