diff options
Diffstat (limited to 'gcc/gimplify.c')
| -rw-r--r-- | gcc/gimplify.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/gimplify.c b/gcc/gimplify.c index e5b011a..4e6a037 100644 --- a/gcc/gimplify.c +++ b/gcc/gimplify.c @@ -4200,9 +4200,18 @@ gimplify_modify_expr_rhs (tree *expr_p, tree *from_p, tree *to_p, This kind of code arises in C++ when an object is bound to a const reference, and if "x" is a TARGET_EXPR we want to take advantage of the optimization below. */ + bool volatile_p = TREE_THIS_VOLATILE (*from_p); tree t = gimple_fold_indirect_ref_rhs (TREE_OPERAND (*from_p, 0)); if (t) { + if (TREE_THIS_VOLATILE (t) != volatile_p) + { + if (TREE_CODE_CLASS (TREE_CODE (t)) == tcc_declaration) + t = build_simple_mem_ref_loc (EXPR_LOCATION (*from_p), + build_fold_addr_expr (t)); + if (REFERENCE_CLASS_P (t)) + TREE_THIS_VOLATILE (t) = volatile_p; + } *from_p = t; ret = GS_OK; changed = true; |