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| author | Xinliang David Li <davidxl@google.com> | 2013-09-03 18:19:04 +0000 |
|---|---|---|
| committer | Xinliang David Li <davidxl@gcc.gnu.org> | 2013-09-03 18:19:04 +0000 |
| commit | c716e67fa2df61cf4082c75088a0adc1a067d848 (patch) | |
| tree | 564768cce71a061b16e27811fc16551567b1b217 /gcc/tree-vect-stmts.c | |
| parent | db8800bc5f38a732fd5a33d6bfbbff71b186076d (diff) | |
| download | gcc-c716e67fa2df61cf4082c75088a0adc1a067d848.tar.gz | |
Delay base decl's alignment adjustment until transformation happens
From-SVN: r202229
Diffstat (limited to 'gcc/tree-vect-stmts.c')
| -rw-r--r-- | gcc/tree-vect-stmts.c | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/gcc/tree-vect-stmts.c b/gcc/tree-vect-stmts.c index 3768dcd114b..7b8e7087b68 100644 --- a/gcc/tree-vect-stmts.c +++ b/gcc/tree-vect-stmts.c @@ -3809,6 +3809,26 @@ vectorizable_operation (gimple stmt, gimple_stmt_iterator *gsi, return true; } +/* A helper function to ensure data reference DR's base alignment + for STMT_INFO. */ + +static void +ensure_base_align (stmt_vec_info stmt_info, struct data_reference *dr) +{ + if (!dr->aux) + return; + + if (((dataref_aux *)dr->aux)->base_misaligned) + { + tree vectype = STMT_VINFO_VECTYPE (stmt_info); + tree base_decl = ((dataref_aux *)dr->aux)->base_decl; + + DECL_ALIGN (base_decl) = TYPE_ALIGN (vectype); + DECL_USER_ALIGN (base_decl) = 1; + ((dataref_aux *)dr->aux)->base_misaligned = false; + } +} + /* Function vectorizable_store. @@ -3820,7 +3840,7 @@ vectorizable_operation (gimple stmt, gimple_stmt_iterator *gsi, static bool vectorizable_store (gimple stmt, gimple_stmt_iterator *gsi, gimple *vec_stmt, - slp_tree slp_node) + slp_tree slp_node) { tree scalar_dest; tree data_ref; @@ -3982,6 +4002,8 @@ vectorizable_store (gimple stmt, gimple_stmt_iterator *gsi, gimple *vec_stmt, /** Transform. **/ + ensure_base_align (stmt_info, dr); + if (grouped_store) { first_dr = STMT_VINFO_DATA_REF (vinfo_for_stmt (first_stmt)); @@ -4364,7 +4386,7 @@ permute_vec_elements (tree x, tree y, tree mask_vec, gimple stmt, static bool vectorizable_load (gimple stmt, gimple_stmt_iterator *gsi, gimple *vec_stmt, - slp_tree slp_node, slp_instance slp_node_instance) + slp_tree slp_node, slp_instance slp_node_instance) { tree scalar_dest; tree vec_dest = NULL; @@ -4375,7 +4397,7 @@ vectorizable_load (gimple stmt, gimple_stmt_iterator *gsi, gimple *vec_stmt, struct loop *loop = NULL; struct loop *containing_loop = (gimple_bb (stmt))->loop_father; bool nested_in_vect_loop = false; - struct data_reference *dr = STMT_VINFO_DATA_REF (stmt_info), *first_dr; + struct data_reference *dr = STMT_VINFO_DATA_REF (stmt_info), *first_dr = NULL; tree vectype = STMT_VINFO_VECTYPE (stmt_info); tree elem_type; tree new_temp; @@ -4575,6 +4597,8 @@ vectorizable_load (gimple stmt, gimple_stmt_iterator *gsi, gimple *vec_stmt, /** Transform. **/ + ensure_base_align (stmt_info, dr); + if (STMT_VINFO_GATHER_P (stmt_info)) { tree vec_oprnd0 = NULL_TREE, op; |