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.

From-SVN: r172785

1 files changed, 2 insertions, 4 deletions

diff --git a/gcc/cse.c b/gcc/cse.c
index f7b477c..d83b38a 100644
--- a/gcc/cse.c
+++ b/gcc/cse.c
@@ -796,8 +796,7 @@ init_cse_reg_info (unsigned int nregs)
 	}
 
       /* Reallocate the table with NEW_SIZE entries.  */
-      if (cse_reg_info_table)
-	free (cse_reg_info_table);
+      free (cse_reg_info_table);
       cse_reg_info_table = XNEWVEC (struct cse_reg_info, new_size);
       cse_reg_info_table_size = new_size;
       cse_reg_info_table_first_uninitialized = 0;
@@ -6975,8 +6974,7 @@ delete_trivially_dead_insns (rtx insns, int nreg)
 		df_insn_rescan (insn);
 	      }
 	  }
-      if (replacements)
-	free (replacements);
+      free (replacements);
     }
 
   if (dump_file && ndead)