diff options
| author | Eric Botcazou <ebotcazou@adacore.com> | 2012-05-15 07:21:37 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2012-05-15 07:21:37 +0000 |
| commit | f301837ea38782f232b7db3e1e0eb51a03819240 (patch) | |
| tree | 9b15f75819db2c471bd87195d4830b892fc6bb39 /gcc/gimplify.c | |
| parent | aa44c80c8f41928efa6c8ccaeaadf6e602925e3b (diff) | |
| download | gcc-f301837ea38782f232b7db3e1e0eb51a03819240.zip gcc-f301837ea38782f232b7db3e1e0eb51a03819240.tar.gz gcc-f301837ea38782f232b7db3e1e0eb51a03819240.tar.bz2 | |
gimplify.c (gimplify_init_constructor): Do a block move for very small objects as well.
* gimplify.c (gimplify_init_constructor): Do a block move for very
small objects as well.
From-SVN: r187498
Diffstat (limited to 'gcc/gimplify.c')
| -rw-r--r-- | gcc/gimplify.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/gcc/gimplify.c b/gcc/gimplify.c index 02e42b8..d7f1f82 100644 --- a/gcc/gimplify.c +++ b/gcc/gimplify.c @@ -4033,9 +4033,13 @@ gimplify_init_constructor (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p, else align = TYPE_ALIGN (type); + /* Do a block move either if the size is so small as to make + each individual move a sub-unit move on average, or if it + is so large as to make individual moves inefficient. */ if (size > 0 && num_nonzero_elements > 1 - && !can_move_by_pieces (size, align)) + && (size < num_nonzero_elements + || !can_move_by_pieces (size, align))) { if (notify_temp_creation) return GS_ERROR; |