[PATCH] tree-optimization/109502 - vector conversion between mask and non-mask

[Richard Biener via Gcc-patches]

The following fixes a check that should have rejected vectorizing
a conversion between a mask and non-mask type.  Those should be
done via pattern statements.

Bootstrapped and tested on x86_64-unknown-linux-gnu, pushed.

        PR tree-optimization/109502
        * tree-vect-stmts.cc (vectorizable_assignment): Fix
        check for conversion between mask and non-mask types.

        * gcc.dg/vect/pr109502.c: New testcase.
---
 gcc/testsuite/gcc.dg/vect/pr109502.c | 21 +++++++++++++++++++++
 gcc/tree-vect-stmts.cc               |  3 +--
 2 files changed, 22 insertions(+), 2 deletions(-)
 create mode 100644 gcc/testsuite/gcc.dg/vect/pr109502.c

diff --git a/gcc/testsuite/gcc.dg/vect/pr109502.c 
b/gcc/testsuite/gcc.dg/vect/pr109502.c
new file mode 100644
index 00000000000..970c63e931b
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/pr109502.c
@@ -0,0 +1,21 @@
+/* { dg-do run } */
+/* { dg-additional-options "-O" } */
+
+unsigned g;
+
+unsigned
+foo (void)
+{
+  unsigned a = !g;
+  a += !(a % 6);
+  return a;
+}
+
+int
+main ()
+{
+  unsigned x = foo ();
+  if (x != 1)
+    __builtin_abort ();
+  return 0;
+}
diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc
index efa2d0daa52..6b7dbfd4a23 100644
--- a/gcc/tree-vect-stmts.cc
+++ b/gcc/tree-vect-stmts.cc
@@ -5595,8 +5595,7 @@ vectorizable_assignment (vec_info *vinfo,
                       GET_MODE_SIZE (TYPE_MODE (vectype_in)))))
     return false;
 
-  if (VECTOR_BOOLEAN_TYPE_P (vectype)
-      && !VECTOR_BOOLEAN_TYPE_P (vectype_in))
+  if (VECTOR_BOOLEAN_TYPE_P (vectype) != VECTOR_BOOLEAN_TYPE_P (vectype_in))
     {
       if (dump_enabled_p ())
        dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
-- 
2.35.3