PR tree-optimization/70729

gcc/
	* tree-vectorizer.c (adjust_simduid_builtins): Nullify safelen field
	of loop since it can be not valid after transformation.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@237907 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 153c10e2501daca5d020cd328fae0ed5772a4431..685847bf043910f053e1708a039fa8984100d119 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2016-07-01  Yuri Rumyantsev  <ysrumyan@gmail.com>
+
+       PR tree-optimization/70729
+       * tree-vectorizer.c (adjust_simduid_builtins): Nullify safelen field
+       of loop since it can be not valid after transformation.
+
 2016-07-01  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
        * config/arm/arm.c (thumb_reload_in_hi): Delete.

diff --git a/gcc/tree-vectorizer.c b/gcc/tree-vectorizer.c
index 26698135f541575f0bbf75ba06ae652dfbd9f55c..9fbd1836ecb905e228147d8ea3eab61a51ad737a 100644 (file)
--- a/gcc/tree-vectorizer.c
+++ b/gcc/tree-vectorizer.c
@@ -204,6 +204,10 @@ adjust_simduid_builtins (hash_table<simduid_to_vf> *htab)
          gcc_assert (TREE_CODE (arg) == SSA_NAME);
          simduid_to_vf *p = NULL, data;
          data.simduid = DECL_UID (SSA_NAME_VAR (arg));
+         /* Need to nullify loop safelen field since it's value is not
+            valid after transformation.  */
+         if (bb->loop_father && bb->loop_father->safelen > 0)
+           bb->loop_father->safelen = 0;
          if (htab)
            {
              p = htab->find (&data);