[gcc r13-799] Avoid shift in get_ref_base_and_extent

[gcc r13-799] Avoid shift in get_ref_base_and_extent

[Richard Biener]

https://gcc.gnu.org/g:37c988bc1b22d1259a4d8e819fc33c65faa9debb

commit r13-799-g37c988bc1b22d1259a4d8e819fc33c65faa9debb
Author: Richard Biener <rguenther@suse.de>
Date:   Fri May 27 14:07:03 2022 +0200

    Avoid shift in get_ref_base_and_extent
    
    This avoids one instance of a shift from bytes to bits in
    get_ref_base_and_extent by using TYPE_SIZE instead of TYPE_SIZE_UNIT.
    
            * tree-dfa.cc (get_ref_base_and_extent): Avoid shift.

Diff:
---
 gcc/tree-dfa.cc | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/gcc/tree-dfa.cc b/gcc/tree-dfa.cc
index 21c82cedb9f..e75e3d605b3 100644
--- a/gcc/tree-dfa.cc
+++ b/gcc/tree-dfa.cc
@@ -453,8 +453,8 @@ get_ref_base_and_extent (tree exp, poly_int64_pod *poffset,
 		    if (!next
 			|| TREE_CODE (stype) != RECORD_TYPE)
 		      {
-			tree fsize = DECL_SIZE_UNIT (field);
-			tree ssize = TYPE_SIZE_UNIT (stype);
+			tree fsize = DECL_SIZE (field);
+			tree ssize = TYPE_SIZE (stype);
 			if (fsize == NULL
 			    || !poly_int_tree_p (fsize)
 			    || ssize == NULL
@@ -465,7 +465,6 @@ get_ref_base_and_extent (tree exp, poly_int64_pod *poffset,
 			    poly_offset_int tem
 			      = (wi::to_poly_offset (ssize)
 				 - wi::to_poly_offset (fsize));
-			    tem <<= LOG2_BITS_PER_UNIT;
 			    tem -= woffset;
 			    maxsize += tem;
 			  }