diff options
Diffstat (limited to 'gcc/gimplify.c')
| -rw-r--r-- | gcc/gimplify.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/gimplify.c b/gcc/gimplify.c index 7e33666dceb..6b654be9c11 100644 --- a/gcc/gimplify.c +++ b/gcc/gimplify.c @@ -4576,6 +4576,9 @@ gimplify_modify_expr (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p, SET_DECL_DEBUG_EXPR (*from_p, *to_p); } + if (want_value && TREE_THIS_VOLATILE (*to_p)) + *from_p = get_initialized_tmp_var (*from_p, pre_p, post_p); + if (TREE_CODE (*from_p) == CALL_EXPR) { /* Since the RHS is a CALL_EXPR, we need to create a GIMPLE_CALL @@ -4603,7 +4606,7 @@ gimplify_modify_expr (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p, if (want_value) { - *expr_p = unshare_expr (*to_p); + *expr_p = TREE_THIS_VOLATILE (*to_p) ? *from_p : unshare_expr (*to_p); return GS_OK; } else |