remove useless if-before-free tests

Change "if (E) free (E);" to "free (E);" everywhere except in the
libgo/, intl/, zlib/ and classpath/ directories.
Also transform equivalent variants like
"if (E != NULL) free (E);" and allow an extra cast on the
argument to free.  Otherwise, the tested and freed "E"
expressions must be identical, modulo white space.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@172785 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 2 insertions, 4 deletions

diff --git a/gcc/tree-ssa-loop-ivopts.c b/gcc/tree-ssa-loop-ivopts.c
index 0aa21e0c9f3..b00b8d44ac3 100644
--- a/gcc/tree-ssa-loop-ivopts.c
+++ b/gcc/tree-ssa-loop-ivopts.c
@@ -6254,8 +6254,7 @@ free_loop_data (struct ivopts_data *data)
       struct version_info *info;
 
       info = ver_info (data, i);
-      if (info->iv)
-	free (info->iv);
+      free (info->iv);
       info->iv = NULL;
       info->has_nonlin_use = false;
       info->preserve_biv = false;
@@ -6282,8 +6281,7 @@ free_loop_data (struct ivopts_data *data)
     {
       struct iv_cand *cand = iv_cand (data, i);
 
-      if (cand->iv)
-	free (cand->iv);
+      free (cand->iv);
       if (cand->depends_on)
 	BITMAP_FREE (cand->depends_on);
       free (cand);