diff options
| author | H.J. Lu <hongjiu.lu@intel.com> | 2010-10-03 23:57:01 +0000 |
|---|---|---|
| committer | H.J. Lu <hjl@gcc.gnu.org> | 2010-10-03 16:57:01 -0700 |
| commit | a1e53f3f45341740225db7b5770c7dca77528fca (patch) | |
| tree | dbbfff3737bea92b24f23f3f5e2577fc6e0e09df /gcc/tree-vect-data-refs.c | |
| parent | 79fe346e8aac0fecd659ba7433107ea3e86a4cd6 (diff) | |
| download | gcc-a1e53f3f45341740225db7b5770c7dca77528fca.tar.gz | |
Revert revision 164914.
gcc/
2010-10-03 H.J. Lu <hongjiu.lu@intel.com>
* tree-vect-data-refs.c (vect_analyze_data_ref_access): Revert
revision 164914.
(vect_create_data_ref_ptr): Likewise.
* tree-vect-stmts.c (vectorizable_store): Likewise.
(perm_mask_for_reverse): Likewise.
(reverse_vec_elements): Likewise.
(vectorizable_load): Likewise.
gcc/testsuite/
2010-10-03 H.J. Lu <hongjiu.lu@intel.com>
* g++.dg/torture/pr45764.C: Revert revision 164914.
* gcc.dg/vect/pr43432.c: Likewise.
* gcc.dg/vect/vect-114.c: Likewise.
* gcc.dg/vect/vect-15.c: Likewise.
From-SVN: r164919
Diffstat (limited to 'gcc/tree-vect-data-refs.c')
| -rw-r--r-- | gcc/tree-vect-data-refs.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c index 0d1e3381738..71825137cd7 100644 --- a/gcc/tree-vect-data-refs.c +++ b/gcc/tree-vect-data-refs.c @@ -2287,7 +2287,9 @@ vect_analyze_data_ref_access (struct data_reference *dr) } /* Consecutive? */ - if (!tree_int_cst_compare (step, TYPE_SIZE_UNIT (scalar_type))) + if (!tree_int_cst_compare (step, TYPE_SIZE_UNIT (scalar_type)) + || (dr_step < 0 + && !compare_tree_int (TYPE_SIZE_UNIT (scalar_type), -dr_step))) { /* Mark that it is not interleaving. */ DR_GROUP_FIRST_DR (vinfo_for_stmt (stmt)) = NULL; @@ -2970,6 +2972,7 @@ vect_create_data_ref_ptr (gimple stmt, struct loop *at_loop, tree vptr; gimple_stmt_iterator incr_gsi; bool insert_after; + bool negative; tree indx_before_incr, indx_after_incr; gimple incr; tree step; @@ -3002,6 +3005,7 @@ vect_create_data_ref_ptr (gimple stmt, struct loop *at_loop, *inv_p = true; else *inv_p = false; + negative = tree_int_cst_compare (step, size_zero_node) < 0; /* Create an expression for the first address accessed by this load in LOOP. */ @@ -3160,6 +3164,8 @@ vect_create_data_ref_ptr (gimple stmt, struct loop *at_loop, LOOP is zero. In this case the step here is also zero. */ if (*inv_p) step = size_zero_node; + else if (negative) + step = fold_build1 (NEGATE_EXPR, TREE_TYPE (step), step); standard_iv_increment_position (loop, &incr_gsi, &insert_after); |