[PATCH] gcc/ira-color.c: save a init statement

[Zhouyi Zhou]

  In function setup_left_conflict_sizes_p, init assignment 
conflict_size = 0 could be eliminated for the tidiness.

  I have no write access to gcc repository and I can't 
provide a testcase because the improvement has effective 
compiler no output.
 
  Bootstraped and regtested in x86_64 Linux 
  Signed-off-by: Zhouyi Zhou <yizhouz...@ict.ac.cn>

---
 gcc/ChangeLog   |    3 +++
 gcc/ira-color.c |    3 +--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index bd74326..577b57e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,6 @@
+2015-02-09  Zhouyi Zhou   <yizhouz...@ict.ac.cn>
+       * ira-color.c (setup_left_conflict_sizes_p): save a init statement.
+       
 2015-02-08  Andrew Pinski  <apin...@cavium.com>
 
        * config/aarch64/aarch64.c (gty_dummy): Delete.
diff --git a/gcc/ira-color.c b/gcc/ira-color.c
index d04be29..5591637 100644
--- a/gcc/ira-color.c
+++ b/gcc/ira-color.c
@@ -858,7 +858,6 @@ setup_left_conflict_sizes_p (ira_allocno_t a)
   HARD_REG_SET node_set;
 
   nobj = ALLOCNO_NUM_OBJECTS (a);
-  conflict_size = 0;
   data = ALLOCNO_COLOR_DATA (a);
   subnodes = allocno_hard_regs_subnodes + data->hard_regs_subnodes_start;
   COPY_HARD_REG_SET (profitable_hard_regs, data->profitable_hard_regs);
@@ -959,7 +958,7 @@ setup_left_conflict_sizes_p (ira_allocno_t a)
     }
   left_conflict_subnodes_size = subnodes[0].left_conflict_subnodes_size;
   conflict_size
-    += (left_conflict_subnodes_size
+    = (left_conflict_subnodes_size
        + MIN (subnodes[0].max_node_impact - left_conflict_subnodes_size,
               subnodes[0].left_conflict_size));
   conflict_size += ira_reg_class_max_nregs[ALLOCNO_CLASS (a)][ALLOCNO_MODE 
(a)];
-- 
1.7.10.4