Fix -Wimplicit-fallthrough in combine.c

2017-10-18  Martin Liska  <mliska@suse.cz>

	* combine.c (simplify_compare_const): Add gcc_fallthrough.

From-SVN: r253853

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e4563c8e2ab8790db928a6bf295f06c5b8b1547b..a5c3139dc4ec10d40c27b9107d5f824306c88ffc 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2017-10-18  Martin Liska  <mliska@suse.cz>
+
+       * combine.c (simplify_compare_const): Add gcc_fallthrough.
+
 2017-10-18  Robin Dapp  <rdapp@linux.vnet.ibm.com>
 
        * config/s390/s390.c (s390_bb_fallthru_entry_likely): New function.

diff --git a/gcc/combine.c b/gcc/combine.c
index 3b96d86bdb3711aa2923440e1f8dadf5486bfb2c..757ae6fc93e48bd2a7a289c1009a27c01d3232f1 100644 (file)
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -11791,6 +11791,7 @@ simplify_compare_const (enum rtx_code code, machine_mode mode,
          const_op -= 1;
          code = LEU;
          /* ... fall through ...  */
+         gcc_fallthrough ();
        }
       /* (unsigned) < 0x80000000 is equivalent to >= 0.  */
       else if (is_a <scalar_int_mode> (mode, &int_mode)
@@ -11828,6 +11829,7 @@ simplify_compare_const (enum rtx_code code, machine_mode mode,
          const_op -= 1;
          code = GTU;
          /* ... fall through ...  */
+         gcc_fallthrough ();
        }
 
       /* (unsigned) >= 0x80000000 is equivalent to < 0.  */