[gcc r16-1079] tree-optimization/120517 - fix dataref group split math

[Richard Biener via Gcc-cvs]

https://gcc.gnu.org/g:f605165ee4baf65a46a16692e3aaa13046cbd283

commit r16-1079-gf605165ee4baf65a46a16692e3aaa13046cbd283
Author: Richard Biener <rguent...@suse.de>
Date:   Tue Jun 3 14:09:22 2025 +0200

    tree-optimization/120517 - fix dataref group split math
    
    DR_INIT is already measured in bytes, so there's no need to multiply
    the DR_INIT difference of two DRs by the size of one of the DRs when
    comparing that difference against MAX_BITSIZE_MODE_ANY_MODE.
    
            PR tree-optimization/120517
            * tree-vect-data-refs.cc (vect_analyze_data_ref_accesses):
            Fix math in dataref group split.

Diff:
---
 gcc/tree-vect-data-refs.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/tree-vect-data-refs.cc b/gcc/tree-vect-data-refs.cc
index f2deb751ed92..1792ee4ea05f 100644
--- a/gcc/tree-vect-data-refs.cc
+++ b/gcc/tree-vect-data-refs.cc
@@ -3685,7 +3685,7 @@ vect_analyze_data_ref_accesses (vec_info *vinfo,
              /* For datarefs with big gap, it's better to split them into 
different
                 groups.
                 .i.e a[0], a[1], a[2], .. a[7], a[100], a[101],..., a[107]  */
-             if ((unsigned HOST_WIDE_INT)(init_b - init_prev) * tree_to_uhwi 
(szb)
+             if ((unsigned HOST_WIDE_INT)(init_b - init_prev)
                  > MAX_BITSIZE_MODE_ANY_MODE / BITS_PER_UNIT)
                break;