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| author | Richard Biener <rguenther@suse.de> | 2019-07-11 07:32:04 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2019-07-11 07:32:04 +0000 |
| commit | 3e66e7b0d1efa3f78a5598884e2d5d526894833e (patch) | |
| tree | 9c65fdd93d11a334ed47d89dbca153ac6980bcec /gcc/gimplify.c | |
| parent | 639000e2121c2b15f6cdd555ca3f666305b3684d (diff) | |
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re PR middle-end/91131 (Bad bitfield coalescing)
2019-07-11 Richard Biener <rguenther@suse.de>
PR middle-end/91131
* gimplify.c (gimplify_compound_literal_expr): Force a temporary
when the object is volatile and we have not cleared it even though
there are no nonzero elements.
* gcc.target/i386/pr91131.c: New testcase.
From-SVN: r273376
Diffstat (limited to 'gcc/gimplify.c')
| -rw-r--r-- | gcc/gimplify.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/gimplify.c b/gcc/gimplify.c index 239988b..146a86c 100644 --- a/gcc/gimplify.c +++ b/gcc/gimplify.c @@ -5005,7 +5005,7 @@ gimplify_init_constructor (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p, one field to assign, initialize the target from a temporary. */ if (TREE_THIS_VOLATILE (object) && !TREE_ADDRESSABLE (type) - && num_nonzero_elements > 0 + && (num_nonzero_elements > 0 || !cleared) && vec_safe_length (elts) > 1) { tree temp = create_tmp_var (TYPE_MAIN_VARIANT (type)); |