[PATCH] Fix PR68248

[Richard Biener]

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

Richard.

2015-11-09  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/68248
        * tree-vect-generic.c (expand_vector_operations_1): Handle
        scalar rhs2.

        * gcc.dg/torture/pr68248.c: New testcase.

Index: gcc/tree-vect-generic.c
===================================================================
*** gcc/tree-vect-generic.c     (revision 230003)
--- gcc/tree-vect-generic.c     (working copy)
*************** expand_vector_operations_1 (gimple_stmt_
*** 1527,1532 ****
--- 1528,1535 ----
    tree srhs1, srhs2 = NULL_TREE;
    if ((srhs1 = ssa_uniform_vector_p (rhs1)) != NULL_TREE
        && (rhs2 == NULL_TREE
+         || (! VECTOR_TYPE_P (TREE_TYPE (rhs2))
+             && (srhs2 = rhs2))
          || (srhs2 = ssa_uniform_vector_p (rhs2)) != NULL_TREE)
        /* As we query direct optabs restrict to non-convert operations.  */
        && TYPE_MODE (TREE_TYPE (type)) == TYPE_MODE (TREE_TYPE (srhs1)))
Index: gcc/testsuite/gcc.dg/torture/pr68248.c
===================================================================
*** gcc/testsuite/gcc.dg/torture/pr68248.c      (revision 0)
--- gcc/testsuite/gcc.dg/torture/pr68248.c      (working copy)
***************
*** 0 ****
--- 1,20 ----
+ /* { dg-do compile } */
+ 
+ int a, b, c, d;
+ 
+ int
+ fn1 (int p1)
+ {
+   return a > 0 ? p1 : p1 >> a;
+ }
+ 
+ void
+ fn2 ()
+ {
+   char e;
+   for (; c; c++)
+     {
+       e = fn1 (!d ^ 2);
+       b ^= e;
+     }
+ }