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| author | Guozhi Wei <carrot@google.com> | 2014-10-22 15:56:59 +0000 |
|---|---|---|
| committer | Wei Guozhi <carrot@gcc.gnu.org> | 2014-10-22 15:56:59 +0000 |
| commit | 417dfefbdbc78eef2b6e9a2f70f153547c73b6e3 (patch) | |
| tree | c465148bca93207b0514e1ba2c3d75362ab71f09 /gcc/tree-vect-data-refs.c | |
| parent | 9612a39a41f7d66a303c0b6fa4e76aa739d12b9a (diff) | |
| download | gcc-417dfefbdbc78eef2b6e9a2f70f153547c73b6e3.zip gcc-417dfefbdbc78eef2b6e9a2f70f153547c73b6e3.tar.gz gcc-417dfefbdbc78eef2b6e9a2f70f153547c73b6e3.tar.bz2 | |
re PR tree-optimization/63530 (GCC generates incorrect aligned store on ARM after the loop is unrolled.)
PR tree-optimization/63530
tree-vect-data-refs.c (vect_create_addr_base_for_vector_ref): Set
pointer alignment according to DR_MISALIGNMENT.
gcc.dg/vect/pr63530.c: New testcase.
From-SVN: r216562
Diffstat (limited to 'gcc/tree-vect-data-refs.c')
| -rw-r--r-- | gcc/tree-vect-data-refs.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c index 0807b95..66ba70a 100644 --- a/gcc/tree-vect-data-refs.c +++ b/gcc/tree-vect-data-refs.c @@ -3960,8 +3960,12 @@ vect_create_addr_base_for_vector_ref (gimple stmt, && TREE_CODE (addr_base) == SSA_NAME) { duplicate_ssa_name_ptr_info (addr_base, DR_PTR_INFO (dr)); - if (offset) + unsigned int align = TYPE_ALIGN_UNIT (STMT_VINFO_VECTYPE (stmt_info)); + int misalign = DR_MISALIGNMENT (dr); + if (offset || byte_offset || (misalign == -1)) mark_ptr_info_alignment_unknown (SSA_NAME_PTR_INFO (addr_base)); + else + set_ptr_info_alignment (SSA_NAME_PTR_INFO (addr_base), align, misalign); } if (dump_enabled_p ()) |