https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102752
--- Comment #2 from Stefan Schulze Frielinghaus <stefansf at linux dot ibm.com>
---
It looks like I missed to take the TREE_TYPE of reduction_var. I just did a
quick test with
diff --git a/gcc/tree-loop-distribution.c b/gcc/tree-loop-distribution.c
index fb9250031b5..0559b9c47d7 100644
--- a/gcc/tree-loop-distribution.c
+++ b/gcc/tree-loop-distribution.c
@@ -3430,7 +3430,7 @@ generate_strlen_builtin_using_rawmemchr (loop_p loop,
tree reduction_var,
static bool
reduction_var_overflows_first (tree reduction_var, tree load_type)
{
- widest_int n2 = wi::lshift (1, TYPE_PRECISION (reduction_var));;
+ widest_int n2 = wi::lshift (1, TYPE_PRECISION (TREE_TYPE (reduction_var)));;
widest_int m2 = wi::lshift (1, TYPE_PRECISION (ptrdiff_type_node) - 1);
widest_int s = wi::to_widest (TYPE_SIZE_UNIT (load_type));
return wi::ltu_p (n2, wi::udiv_trunc (m2, s));
@@ -3681,7 +3681,7 @@ loop_distribution::transform_reduction_loop (loop_p loop)
&& ((TYPE_PRECISION (sizetype) >= TYPE_PRECISION (ptr_type_node) - 1
&& TYPE_PRECISION (ptr_type_node) >= 32)
|| (TYPE_OVERFLOW_UNDEFINED (TREE_TYPE (reduction_var))
- && TYPE_PRECISION (reduction_var) <= TYPE_PRECISION
(sizetype)))
+ && TYPE_PRECISION (TREE_TYPE (reduction_var)) <=
TYPE_PRECISION (sizetype)))
&& builtin_decl_implicit (BUILT_IN_STRLEN))
generate_strlen_builtin (loop, reduction_var, load_iv.base,
reduction_iv.base, loc);
successfully. It's getting late here. I will come back to this tomorrow
morning. Sorry for the inconvenience.
