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poly_int: vectorizable_call

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This patch makes vectorizable_call handle variable-length vectors.
The only substantial change is to use build_index_vector for
IFN_GOMP_SIMD_LANE; this makes no functional difference for
fixed-length vectors.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* tree-vect-stmts.c (vectorizable_call): Treat the number of
	vectors as polynomial.  Use build_index_vector for
	IFN_GOMP_SIMD_LANE.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>

From-SVN: r256137
This commit is contained in:
Richard Sandiford 2018-01-03 07:16:14 +00:00 • committed by Richard Sandiford
parent 4d694b27c3
commit c7bda0f40e
2 changed files with 14 additions and 10 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2018-01-03 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
* tree-vect-stmts.c (vectorizable_call): Treat the number of
vectors as polynomial. Use build_index_vector for
IFN_GOMP_SIMD_LANE.
2018-01-03 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>

16
gcc/tree-vect-stmts.c
View file

@ -2650,8 +2650,8 @@ vectorizable_call (gimple *gs, gimple_stmt_iterator *gsi, gimple **vec_stmt,
tree vec_oprnd0 = NULL_TREE, vec_oprnd1 = NULL_TREE;
stmt_vec_info stmt_info = vinfo_for_stmt (gs), prev_stmt_info;
tree vectype_out, vectype_in;
int nunits_in;
int nunits_out;
poly_uint64 nunits_in;
poly_uint64 nunits_out;
loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info);
bb_vec_info bb_vinfo = STMT_VINFO_BB_VINFO (stmt_info);
vec_info *vinfo = stmt_info->vinfo;
@ -2771,11 +2771,11 @@ vectorizable_call (gimple *gs, gimple_stmt_iterator *gsi, gimple **vec_stmt,
/* FORNOW */
nunits_in = TYPE_VECTOR_SUBPARTS (vectype_in);
nunits_out = TYPE_VECTOR_SUBPARTS (vectype_out);
if (nunits_in == nunits_out / 2)
if (known_eq (nunits_in * 2, nunits_out))
modifier = NARROW;
else if (nunits_out == nunits_in)
else if (known_eq (nunits_out, nunits_in))
modifier = NONE;
else if (nunits_out == nunits_in / 2)
else if (known_eq (nunits_out * 2, nunits_in))
modifier = WIDEN;
else
return false;
@ -2974,11 +2974,7 @@ vectorizable_call (gimple *gs, gimple_stmt_iterator *gsi, gimple **vec_stmt,
if (gimple_call_internal_p (stmt)
&& gimple_call_internal_fn (stmt) == IFN_GOMP_SIMD_LANE)
{
tree_vector_builder v (vectype_out, 1, 3);
for (int k = 0; k < 3; ++k)
v.quick_push (build_int_cst (unsigned_type_node,
j * nunits_out + k));
tree cst = v.build ();
tree cst = build_index_vector (vectype_out, j * nunits_out, 1);
tree new_var
= vect_get_new_ssa_name (vectype_out, vect_simple_var, "cst_");
gimple *init_stmt = gimple_build_assign (new_var, cst);