[gcc r12-11218] middle-end/115110 - Fix view_converted_memref_p

[Richard Biener]

https://gcc.gnu.org/g:4f63fd4b663bdde39524129dfa458c60b2d67133

commit r12-11218-g4f63fd4b663bdde39524129dfa458c60b2d67133
Author: Richard Biener <rguenther@suse.de>
Date:   Fri May 17 11:02:29 2024 +0200

    middle-end/115110 - Fix view_converted_memref_p
    
    view_converted_memref_p was checking the reference type against the
    pointer type of the offset operand rather than its pointed-to type
    which leads to all refs being subject to view-convert treatment
    in get_alias_set causing numerous testsuite fails but with its
    new uses from r15-512-g9b7cad5884f21c is also a wrong-code issue.
    
            PR middle-end/115110
            * tree-ssa-alias.cc (view_converted_memref_p): Fix.
    
    (cherry picked from commit a5b3721c06646bf5b9b50a22964e8e2bd4d03f5f)

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

diff --git a/gcc/tree-ssa-alias.cc b/gcc/tree-ssa-alias.cc
index 1b404e055f8c..8fe4e9d9112a 100644
--- a/gcc/tree-ssa-alias.cc
+++ b/gcc/tree-ssa-alias.cc
@@ -2041,8 +2041,9 @@ view_converted_memref_p (tree base)
 {
   if (TREE_CODE (base) != MEM_REF && TREE_CODE (base) != TARGET_MEM_REF)
     return false;
-  return same_type_for_tbaa (TREE_TYPE (base),
-			     TREE_TYPE (TREE_OPERAND (base, 1))) != 1;
+  return (same_type_for_tbaa (TREE_TYPE (base),
+			      TREE_TYPE (TREE_TYPE (TREE_OPERAND (base, 1))))
+	  != 1);
 }
 
 /* Return true if an indirect reference based on *PTR1 constrained