diff options
| author | Tamar Christina <tamar.christina@arm.com> | 2017-11-17 10:47:52 +0000 |
|---|---|---|
| committer | Tamar Christina <tnfchris@gcc.gnu.org> | 2017-11-17 10:47:52 +0000 |
| commit | 6f203500991046555099e72ca8794d60d50ef41d (patch) | |
| tree | d3c3f38c9249ec3af301a9a59de5074e880813bf /gcc/expr.c | |
| parent | 7326cf0fb08b1977171aa97bc8370d950129c813 (diff) | |
| download | gcc-6f203500991046555099e72ca8794d60d50ef41d.zip gcc-6f203500991046555099e72ca8794d60d50ef41d.tar.gz gcc-6f203500991046555099e72ca8794d60d50ef41d.tar.bz2 | |
expr.c (copy_blkmode_to_reg): Fix bitsize for targets with fast unaligned access.
2017-11-17 Tamar Christina <tamar.christina@arm.com>
* expr.c (copy_blkmode_to_reg): Fix bitsize for targets
with fast unaligned access.
* doc/sourcebuild.texi (word_mode_no_slow_unalign): New.
gcc/testsuite/
2017-11-17 Tamar Christina <tamar.christina@arm.com>
* gcc.dg/struct-simple.c: New.
* lib/target-supports.exp
(check_effective_target_word_mode_no_slow_unalign): New.
From-SVN: r254862
Diffstat (limited to 'gcc/expr.c')
| -rw-r--r-- | gcc/expr.c | 4 |
1 files changed, 3 insertions, 1 deletions
@@ -2772,7 +2772,9 @@ copy_blkmode_to_reg (machine_mode mode_in, tree src) n_regs = (bytes + UNITS_PER_WORD - 1) / UNITS_PER_WORD; dst_words = XALLOCAVEC (rtx, n_regs); - bitsize = MIN (TYPE_ALIGN (TREE_TYPE (src)), BITS_PER_WORD); + bitsize = BITS_PER_WORD; + if (targetm.slow_unaligned_access (word_mode, TYPE_ALIGN (TREE_TYPE (src)))) + bitsize = MIN (TYPE_ALIGN (TREE_TYPE (src)), BITS_PER_WORD); /* Copy the structure BITSIZE bits at a time. */ for (bitpos = 0, xbitpos = padding_correction; |