[Bug target/125818] [17 Regression] ICE with SVE intrinsics in aarch64_gimple_fold_builtin: expected ssa_name, have mem_ref

[acoplan at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125818

--- Comment #8 from Alex Coplan <acoplan at gcc dot gnu.org> ---
I.e. I'm testing this:

diff --git a/gcc/config/aarch64/aarch64-sve-builtins-base.cc
b/gcc/config/aarch64/aarch64-sve-builtins-base.cc
index 1fa7473283d..963f0adfda1 100644
--- a/gcc/config/aarch64/aarch64-sve-builtins-base.cc
+++ b/gcc/config/aarch64/aarch64-sve-builtins-base.cc
@@ -2992,12 +2992,12 @@ public:
        The fold routines expect the replacement statement to have the
        same lhs as the original call, so return the copy statement
        rather than the field update.  */
-    gassign *copy = gimple_build_assign (unshare_expr (f.lhs), rhs_tuple);
+    gassign *copy = gimple_build_assign (f.lhs, rhs_tuple);

     /* Get a reference to the individual vector.  */
     tree field = tuple_type_field (TREE_TYPE (f.lhs));
     tree lhs_array = build3 (COMPONENT_REF, TREE_TYPE (field),
-                            f.lhs, field, NULL_TREE);
+                            unshare_expr (f.lhs), field, NULL_TREE);
     tree lhs_vector = build4 (ARRAY_REF, TREE_TYPE (rhs_vector),
                              lhs_array, index, NULL_TREE, NULL_TREE);
     gassign *update = gimple_build_assign (lhs_vector, rhs_vector);

which seems to work for the testcase in the PR.