OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

vect: Fix COND_EXPRs involving variant booleans [PR94727]

Browse Source 
The previous patch for this PR handled separate comparisons.
However, as arm targets show, the same fix is needed when
handling comparisons embedded in a VEC_COND_EXPR.

Here too, the problem is that vect_get_constant_vectors will
calculate its own vector type, using truth_type_for on the
STMT_VINFO_VECTYPE, and the vectoriable_* routines need to be
consistent with that.

2020-04-28  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	PR tree-optimization/94727
	* tree-vect-stmts.c (vect_is_simple_cond): If both comparison
	operands are invariant booleans, use the mask type associated with the
	STMT_VINFO_VECTYPE.  Use !slp_node instead of !vectype to exclude SLP.
	(vectorizable_condition): Pass vectype unconditionally to
	vect_is_simple_cond.
This commit is contained in:
Richard Sandiford 2020-04-28 08:04:29 +01:00
parent f5edc76aca
commit e62a820d68
2 changed files with 25 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
gcc/ChangeLog
View File

@ -1,3 +1,12 @@
2020-04-28 Richard Sandiford <richard.sandiford@arm.com>
PR tree-optimization/94727
* tree-vect-stmts.c (vect_is_simple_cond): If both comparison
operands are invariant booleans, use the mask type associated with the
STMT_VINFO_VECTYPE. Use !slp_node instead of !vectype to exclude SLP.
(vectorizable_condition): Pass vectype unconditionally to
vect_is_simple_cond.
2020-04-27 Jakub Jelinek <jakub@redhat.com>
PR target/94780

27
gcc/tree-vect-stmts.c
View File

@ -9942,16 +9942,21 @@ vect_is_simple_cond (tree cond, vec_info *vinfo, slp_tree slp_node,
if (! *comp_vectype)
{
tree scalar_type = TREE_TYPE (lhs);
/* If we can widen the comparison to match vectype do so. */
if (INTEGRAL_TYPE_P (scalar_type)
&& vectype
&& tree_int_cst_lt (TYPE_SIZE (scalar_type),
TYPE_SIZE (TREE_TYPE (vectype))))
scalar_type = build_nonstandard_integer_type
(tree_to_uhwi (TYPE_SIZE (TREE_TYPE (vectype))),
TYPE_UNSIGNED (scalar_type));
*comp_vectype = get_vectype_for_scalar_type (vinfo, scalar_type,
slp_node);
if (VECT_SCALAR_BOOLEAN_TYPE_P (scalar_type))
*comp_vectype = truth_type_for (vectype);
else
{
/* If we can widen the comparison to match vectype do so. */
if (INTEGRAL_TYPE_P (scalar_type)
&& !slp_node
&& tree_int_cst_lt (TYPE_SIZE (scalar_type),
TYPE_SIZE (TREE_TYPE (vectype))))
scalar_type = build_nonstandard_integer_type
(tree_to_uhwi (TYPE_SIZE (TREE_TYPE (vectype))),
TYPE_UNSIGNED (scalar_type));
*comp_vectype = get_vectype_for_scalar_type (vinfo, scalar_type,
slp_node);
}
}
return true;
@ -10066,7 +10071,7 @@ vectorizable_condition (stmt_vec_info stmt_info, gimple_stmt_iterator *gsi,
else_clause = gimple_assign_rhs3 (stmt);
if (!vect_is_simple_cond (cond_expr, stmt_info->vinfo, slp_node,
&comp_vectype, &dts[0], slp_node ? NULL : vectype)
&comp_vectype, &dts[0], vectype)
|| !comp_vectype)
return false;