------- Comment #2 from rguenth at gcc dot gnu dot org 2009-04-10 18:43 ------- I am testing the following
Index: tree-ssa-sccvn.c =================================================================== --- tree-ssa-sccvn.c (revision 145876) +++ tree-ssa-sccvn.c (working copy) @@ -257,9 +257,10 @@ vn_get_expr_for (tree name) switch (TREE_CODE_CLASS (gimple_assign_rhs_code (def_stmt))) { case tcc_reference: - if (gimple_assign_rhs_code (def_stmt) == VIEW_CONVERT_EXPR - || gimple_assign_rhs_code (def_stmt) == REALPART_EXPR - || gimple_assign_rhs_code (def_stmt) == IMAGPART_EXPR) + if ((gimple_assign_rhs_code (def_stmt) == VIEW_CONVERT_EXPR + || gimple_assign_rhs_code (def_stmt) == REALPART_EXPR + || gimple_assign_rhs_code (def_stmt) == IMAGPART_EXPR) + && TREE_CODE (gimple_assign_rhs1 (def_stmt)) == SSA_NAME) expr = fold_build1 (gimple_assign_rhs_code (def_stmt), gimple_expr_type (def_stmt), TREE_OPERAND (gimple_assign_rhs1 (def_stmt), 0)); -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39713