FreeChainXenon/gcc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

tree-vect-generic.c (lower_vec_perm): Propagate vector constants into VEC_PERM_EXPR.

Browse source 
2012-06-15  Ramana Radhakrishnan  <ramana.radhakrishnan@linaro.org>

	* tree-vect-generic.c (lower_vec_perm): Propagate vector constants
	into VEC_PERM_EXPR.

From-SVN: r188659
This commit is contained in:
Ramana Radhakrishnan 2012-06-15 13:06:51 +00:00 • committed by Ramana Radhakrishnan
parent 772e61e10e
commit 273d260f83
2 changed files with 18 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
gcc/ChangeLog
View file

@ -1,3 +1,8 @@
2012-06-15 Ramana Radhakrishnan <ramana.radhakrishnan@linaro.org>
* tree-vect-generic.c (lower_vec_perm): Propagate vector constants
into VEC_PERM_EXPR.
2012-06-15 Jakub Jelinek <jakub@redhat.com>
* tree-vect-patterns.c (vect_pattern_recog): Don't unnecessarily

14
gcc/tree-vect-generic.c
View file

@ -628,6 +628,14 @@ lower_vec_perm (gimple_stmt_iterator *gsi)
location_t loc = gimple_location (gsi_stmt (*gsi));
unsigned i;
if (TREE_CODE (mask) == SSA_NAME)
{
gimple def_stmt = SSA_NAME_DEF_STMT (mask);
if (is_gimple_assign (def_stmt)
&& gimple_assign_rhs_code (def_stmt) == VECTOR_CST)
mask = gimple_assign_rhs1 (def_stmt);
}
if (TREE_CODE (mask) == VECTOR_CST)
{
unsigned char *sel_int = XALLOCAVEC (unsigned char, elements);
@ -637,7 +645,11 @@ lower_vec_perm (gimple_stmt_iterator *gsi)
& (2 * elements - 1));
if (can_vec_perm_p (TYPE_MODE (vect_type), false, sel_int))
return;
{
gimple_assign_set_rhs3 (stmt, mask);
update_stmt (stmt);
return;
}
}
else if (can_vec_perm_p (TYPE_MODE (vect_type), true, NULL))
return;