diff options
author | clyon <clyon@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-11-03 15:39:32 +0000 |
---|---|---|
committer | clyon <clyon@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-11-03 15:39:32 +0000 |
commit | 53f02ba9e2f9c3c84b085408706eda99625ce2d1 (patch) | |
tree | 1503ec2602940b42f75718e185a46d6edee94389 /gcc/tree-vect-data-refs.c | |
parent | 22fc8281bfb4e05bf989a410a1cd5c85b7edbbb1 (diff) | |
download | gcc-53f02ba9e2f9c3c84b085408706eda99625ce2d1.tar.gz |
Merge branches/gcc-4_8-branch rev 216856
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/linaro/gcc-4_8-branch@217046 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-vect-data-refs.c')
-rw-r--r-- | gcc/tree-vect-data-refs.c | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c index 2fe2abbb47f..cfca2adf4e2 100644 --- a/gcc/tree-vect-data-refs.c +++ b/gcc/tree-vect-data-refs.c @@ -3575,6 +3575,9 @@ vect_get_new_vect_var (tree type, enum vect_var_kind var_kind, const char *name) is as follows: if LOOP=i_loop: &in (relative to i_loop) if LOOP=j_loop: &in+i*2B (relative to j_loop) + BYTE_OFFSET: Optional, defaulted to NULL. If supplied, it is added to the + initial address. Unlike OFFSET, which is number of elements to + be added, BYTE_OFFSET is measured in bytes. Output: 1. Return an SSA_NAME whose value is the address of the memory location of @@ -3588,7 +3591,8 @@ tree vect_create_addr_base_for_vector_ref (gimple stmt, gimple_seq *new_stmt_list, tree offset, - struct loop *loop) + struct loop *loop, + tree byte_offset) { stmt_vec_info stmt_info = vinfo_for_stmt (stmt); struct data_reference *dr = STMT_VINFO_DATA_REF (stmt_info); @@ -3650,6 +3654,16 @@ vect_create_addr_base_for_vector_ref (gimple stmt, base_offset = force_gimple_operand (base_offset, &seq, false, tmp); gimple_seq_add_seq (new_stmt_list, seq); } + if (byte_offset) + { + tree tmp = create_tmp_var (sizetype, "offset"); + + byte_offset = fold_convert (sizetype, byte_offset); + base_offset = fold_build2 (PLUS_EXPR, sizetype, + base_offset, byte_offset); + base_offset = force_gimple_operand (base_offset, &seq, false, tmp); + gimple_seq_add_seq (new_stmt_list, seq); + } /* base + base_offset */ if (loop_vinfo) @@ -3714,6 +3728,10 @@ vect_create_addr_base_for_vector_ref (gimple stmt, 5. BSI: location where the new stmts are to be placed if there is no loop 6. ONLY_INIT: indicate if ap is to be updated in the loop, or remain pointing to the initial address. + 7. BYTE_OFFSET (optional, defaults to NULL): a byte offset to be added + to the initial address accessed by the data-ref in STMT. This is + similar to OFFSET, but OFFSET is counted in elements, while BYTE_OFFSET + in bytes. Output: 1. Declare a new ptr to vector_type, and have it point to the base of the @@ -3727,6 +3745,8 @@ vect_create_addr_base_for_vector_ref (gimple stmt, initial_address = &a[init]; if OFFSET is supplied: initial_address = &a[init + OFFSET]; + if BYTE_OFFSET is supplied: + initial_address = &a[init] + BYTE_OFFSET; Return the initial_address in INITIAL_ADDRESS. @@ -3744,7 +3764,7 @@ tree vect_create_data_ref_ptr (gimple stmt, tree aggr_type, struct loop *at_loop, tree offset, tree *initial_address, gimple_stmt_iterator *gsi, gimple *ptr_incr, - bool only_init, bool *inv_p) + bool only_init, bool *inv_p, tree byte_offset) { const char *base_name; stmt_vec_info stmt_info = vinfo_for_stmt (stmt); @@ -3903,10 +3923,10 @@ vect_create_data_ref_ptr (gimple stmt, tree aggr_type, struct loop *at_loop, /* (2) Calculate the initial address of the aggregate-pointer, and set the aggregate-pointer to point to it before the loop. */ - /* Create: (&(base[init_val+offset]) in the loop preheader. */ + /* Create: (&(base[init_val+offset]+byte_offset) in the loop preheader. */ new_temp = vect_create_addr_base_for_vector_ref (stmt, &new_stmt_list, - offset, loop); + offset, loop, byte_offset); if (new_stmt_list) { if (pe) |