--- a/hotspot/src/share/vm/opto/reg_split.cpp	Wed Jul 05 11:03:19 2017 -0700
+++ b/hotspot/src/share/vm/opto/reg_split.cpp	Thu Jul 06 01:50:26 2017 +0200
@@ -80,9 +80,9 @@
   int num_regs = RegMask::num_registers(ireg);
   bool is_vect = RegMask::is_vector(ireg);
   if( w_mask->overlap( *o_mask ) && // Overlap AND
-      ((num_regs == 1) // Single use or aligned
-        ||  is_vect    // or vector
-        || !is_vect && o_mask->is_aligned_pairs()) ) {
+      (num_regs == 1  // Single use or aligned
+        || is_vect    // or vector
+        || (!is_vect && o_mask->is_aligned_pairs())) ) {
     assert(!is_vect || o_mask->is_aligned_sets(num_regs), "vectors are aligned");
     // Don't come here for mis-aligned doubles
     w_o_mask = w_mask;
@@ -1033,7 +1033,7 @@
             if( !umask.is_AllStack() &&
                 (int)umask.Size() <= lrgs(useidx).num_regs() &&
                 (!def->rematerialize() ||
-                 !is_vect && umask.is_misaligned_pair())) {
+                 (!is_vect && umask.is_misaligned_pair()))) {
               // These need a Split regardless of overlap or pressure
               // SPLIT - NO DEF - NO CISC SPILL
               maxlrg = split_USE(MachSpillCopyNode::Bound, def,b,n,inpidx,maxlrg,dup,false, splits,slidx);
@@ -1188,7 +1188,7 @@
         bool is_vect = RegMask::is_vector(ireg);
         // Only split at Def if this is a HRP block or bound (and spilled once)
         if( !n->rematerialize() &&
-            (((dmask.is_bound(ireg) || !is_vect && dmask.is_misaligned_pair()) &&
+            (((dmask.is_bound(ireg) || (!is_vect && dmask.is_misaligned_pair())) &&
               (deflrg._direct_conflict || deflrg._must_spill)) ||
              // Check for LRG being up in a register and we are inside a high
              // pressure area.  Spill it down immediately.