if (TREE_CODE (init_expr) == INTEGER_CST)
init_expr = fold_convert (TREE_TYPE (vectype), init_expr);
else
gcc_assert (tree_nop_conversion_p (TREE_TYPE (vectype),
TREE_TYPE (init_expr)));
and init_expr is a 24 bit integer type while vectype has 32bit components.
The "fix" is to bail out instead of asserting.
gcc/ChangeLog:
PR tree-optimization/112496
* tree-vect-loop.cc (vectorizable_nonlinear_induction): Return
false when !tree_nop_conversion_p (TREE_TYPE (vectype),
TREE_TYPE (init_expr)).
gcc/testsuite/ChangeLog:
* gcc.target/i386/pr112496.c: New test.
(cherry picked from commit
f28306b4fd309b579c8a4a5bf2f1b24fa40f8f7f)
--- /dev/null
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+struct T { int x : 24; } v;
+void f1(int x) {
+ while (v.x - ((v.x <<= 1) - v.x)) ;
+}
if (TREE_CODE (init_expr) == INTEGER_CST)
init_expr = fold_convert (TREE_TYPE (vectype), init_expr);
- else
- gcc_assert (tree_nop_conversion_p (TREE_TYPE (vectype),
- TREE_TYPE (init_expr)));
+ else if (!tree_nop_conversion_p (TREE_TYPE (vectype), TREE_TYPE (init_expr)))
+ {
+ /* INIT_EXPR could be a bit_field, bail out for such case. */
+ if (dump_enabled_p ())
+ dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
+ "nonlinear induction vectorization failed:"
+ " component type of vectype is not a nop conversion"
+ " from type of init_expr.\n");
+ return false;
+ }
switch (induction_type)
{