VM: Re-format to use at most one newline between functions

runtime/vm/branch_optimizer.cc

Index: runtime/vm/branch_optimizer.cc
diff --git a/runtime/vm/branch_optimizer.cc b/runtime/vm/branch_optimizer.cc
index 0048b7ed637da3a17cc9cff4b85cb046595f6954..3693eda40191dfeae53141cd63b17a070defea2c 100644
--- a/runtime/vm/branch_optimizer.cc
+++ b/runtime/vm/branch_optimizer.cc
@@ -29,7 +29,6 @@ static bool PhiHasSingleUse(PhiInstr* phi, Value* use) {
   return true;
 }
 
-
 bool BranchSimplifier::Match(JoinEntryInstr* block) {
   // Match the pattern of a branch on a comparison whose left operand is a
   // phi from the same block, and whose right operand is a constant.
@@ -59,7 +58,6 @@ bool BranchSimplifier::Match(JoinEntryInstr* block) {
          (block->phis()->length() == 1);
 }
 
-
 JoinEntryInstr* BranchSimplifier::ToJoinEntry(Zone* zone,
                                               TargetEntryInstr* target) {
   // Convert a target block into a join block.  Branches will be duplicated
@@ -74,7 +72,6 @@ JoinEntryInstr* BranchSimplifier::ToJoinEntry(Zone* zone,
   return join;
 }
 
-
 BranchInstr* BranchSimplifier::CloneBranch(Zone* zone,
                                            BranchInstr* branch,
                                            Value* new_left,
@@ -87,7 +84,6 @@ BranchInstr* BranchSimplifier::CloneBranch(Zone* zone,
   return new_branch;
 }
 
-
 void BranchSimplifier::Simplify(FlowGraph* flow_graph) {
   // Optimize some branches that test the value of a phi.  When it is safe
   // to do so, push the branch to each of the predecessor blocks.  This is
@@ -223,7 +219,6 @@ void BranchSimplifier::Simplify(FlowGraph* flow_graph) {
   }
 }
 
-
 static bool IsTrivialBlock(BlockEntryInstr* block, Definition* defn) {
   return (block->IsTargetEntry() && (block->PredecessorCount() == 1)) &&
          ((block->next() == block->last_instruction()) ||
@@ -231,7 +226,6 @@ static bool IsTrivialBlock(BlockEntryInstr* block, Definition* defn) {
            (defn->next() == block->last_instruction())));
 }
 
-
 static void EliminateTrivialBlock(BlockEntryInstr* block,
                                   Definition* instr,
                                   IfThenElseInstr* before) {
@@ -245,7 +239,6 @@ static void EliminateTrivialBlock(BlockEntryInstr* block,
   }
 }
 
-
 void IfConverter::Simplify(FlowGraph* flow_graph) {
   Zone* zone = flow_graph->zone();
   bool changed = false;
@@ -346,5 +339,4 @@ void IfConverter::Simplify(FlowGraph* flow_graph) {
   }
 }
 
-
 }  // namespace dart