Update counting VR for promotion

For 64-bit it makes sense to compute VR uses together for
int and long because core reg is shared.

Change-Id: Ie8676ece12c928d090da2465dfb4de4e91411920
Signed-off-by: Serguei Katkov <serguei.i.katkov@intel.com>

1 files changed, 10 insertions, 7 deletions

diff --git a/compiler/dex/quick/ralloc_util.cc b/compiler/dex/quick/ralloc_util.cc
index e8fc919d5f..fa1c36eaa6 100644
--- a/compiler/dex/quick/ralloc_util.cc
+++ b/compiler/dex/quick/ralloc_util.cc
@@ -1157,20 +1157,23 @@ void Mir2Lir::CountRefs(RefCounts* core_counts, RefCounts* fp_counts, size_t num
     int use_count = mir_graph_->GetUseCount(i);
     if (loc.fp) {
       if (loc.wide) {
-        // Treat doubles as a unit, using upper half of fp_counts array.
-        counts[p_map_idx + num_regs].count += use_count;
+        if (WideFPRsAreAliases()) {
+          // Floats and doubles can be counted together.
+          counts[p_map_idx].count += use_count;
+        } else {
+          // Treat doubles as a unit, using upper half of fp_counts array.
+          counts[p_map_idx + num_regs].count += use_count;
+        }
         i++;
       } else {
         counts[p_map_idx].count += use_count;
       }
     } else if (!IsInexpensiveConstant(loc)) {
-      if (loc.wide && cu_->target64) {
-        // Treat long as a unit, using upper half of core_counts array.
-        counts[p_map_idx + num_regs].count += use_count;
+      if (loc.wide && WideGPRsAreAliases()) {
+        // Longs and doubles can be counted together.
         i++;
-      } else {
-        counts[p_map_idx].count += use_count;
       }
+      counts[p_map_idx].count += use_count;
     }
   }
 }