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authoralalaw01 <alalaw01@138bc75d-0d04-0410-961f-82ee72b054a4>2014-11-14 10:48:34 +0000
committeralalaw01 <alalaw01@138bc75d-0d04-0410-961f-82ee72b054a4>2014-11-14 10:48:34 +0000
commitfb6b80a0487df54ce03f20766283b5a975472b42 (patch)
tree11269bbc5bc8d4449b8484d7fccf11158c77490f /gcc/tree-vect-loop.c
parenta6cab7d490946fbcdf439eaec3886946a4bd2d6a (diff)
downloadgcc-fb6b80a0487df54ce03f20766283b5a975472b42.tar.gz
[Vectorizer]Make reductions-via-shifts and vec_shr_optab endianness-neutral
* optabs.c (shift_amt_for_vec_perm_mask): Remove code conditional on BYTES_BIG_ENDIAN. * tree-vect-loop.c (calc_vec_perm_mask_for_shift, vect_create_epilog_for_reduction): Likewise. * doc/md.texi (vec_shr_m): Clarify direction of shifting. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@217550 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-vect-loop.c')
-rw-r--r--gcc/tree-vect-loop.c14
1 files changed, 4 insertions, 10 deletions
diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c
index 7aa58623207..5e66dcf5354 100644
--- a/gcc/tree-vect-loop.c
+++ b/gcc/tree-vect-loop.c
@@ -3092,7 +3092,7 @@ calc_vec_perm_mask_for_shift (enum machine_mode mode, unsigned int offset,
unsigned int i, nelt = GET_MODE_NUNITS (mode);
for (i = 0; i < nelt; i++)
- sel[i] = (BYTES_BIG_ENDIAN ? i - offset : i + offset) & (2*nelt - 1);
+ sel[i] = (i + offset) & (2*nelt - 1);
}
/* Checks whether the target supports whole-vector shifts for vectors of mode
@@ -3907,7 +3907,7 @@ vect_create_epilog_for_reduction (vec<tree> vect_defs, gimple stmt,
gimple epilog_stmt = NULL;
enum tree_code code = gimple_assign_rhs_code (stmt);
gimple exit_phi;
- tree bitsize, bitpos;
+ tree bitsize;
tree adjustment_def = NULL;
tree vec_initial_def = NULL;
tree reduction_op, expr, def;
@@ -4417,14 +4417,8 @@ vect_create_epilog_for_reduction (vec<tree> vect_defs, gimple stmt,
dump_printf_loc (MSG_NOTE, vect_location,
"extract scalar result\n");
- if (BYTES_BIG_ENDIAN)
- bitpos = size_binop (MULT_EXPR,
- bitsize_int (TYPE_VECTOR_SUBPARTS (vectype) - 1),
- TYPE_SIZE (scalar_type));
- else
- bitpos = bitsize_zero_node;
-
- rhs = build3 (BIT_FIELD_REF, scalar_type, new_temp, bitsize, bitpos);
+ rhs = build3 (BIT_FIELD_REF, scalar_type,
+ new_temp, bitsize, bitsize_zero_node);
epilog_stmt = gimple_build_assign (new_scalar_dest, rhs);
new_temp = make_ssa_name (new_scalar_dest, epilog_stmt);
gimple_assign_set_lhs (epilog_stmt, new_temp);