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[vec-cmp, patch 7/6] Vector comparison enabling in SLP
- From: Ilya Enkovich <enkovich dot gnu at gmail dot com>
- To: gcc-patches at gcc dot gnu dot org
- Date: Mon, 19 Oct 2015 14:06:49 +0300
- Subject: [vec-cmp, patch 7/6] Vector comparison enabling in SLP
- Authentication-results: sourceware.org; auth=none
Hi,
It appeared our testsuite doesn't have a test which would require vector comparison support in SLP even after boolean pattern disabling. This patch adds such tests and allow comparison for SLP. Is it OK?
Thanks,
Ilya
--
gcc/
2015-10-19 Ilya Enkovich <enkovich.gnu@gmail.com>
* tree-vect-slp.c (vect_build_slp_tree_1): Allow
comparison statements.
(vect_get_constant_vectors): Support boolean vector
constants.
gcc/testsuite/
2015-10-19 Ilya Enkovich <enkovich.gnu@gmail.com>
* gcc.dg/vect/slp-cond-5.c: New test.
diff --git a/gcc/testsuite/gcc.dg/vect/slp-cond-5.c b/gcc/testsuite/gcc.dg/vect/slp-cond-5.c
new file mode 100644
index 0000000..5ade7d1
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/slp-cond-5.c
@@ -0,0 +1,81 @@
+/* { dg-require-effective-target vect_condition } */
+
+#include "tree-vect.h"
+
+#define N 128
+
+static inline int
+foo (int x, int y, int a, int b)
+{
+ if (x >= y && a > b)
+ return a;
+ else
+ return b;
+}
+
+__attribute__((noinline, noclone)) void
+bar (int * __restrict__ a, int * __restrict__ b,
+ int * __restrict__ c, int * __restrict__ d,
+ int * __restrict__ e, int w)
+{
+ int i;
+ for (i = 0; i < N/16; i++, a += 16, b += 16, c += 16, d += 16, e += 16)
+ {
+ e[0] = foo (c[0], d[0], a[0] * w, b[0] * w);
+ e[1] = foo (c[1], d[1], a[1] * w, b[1] * w);
+ e[2] = foo (c[2], d[2], a[2] * w, b[2] * w);
+ e[3] = foo (c[3], d[3], a[3] * w, b[3] * w);
+ e[4] = foo (c[4], d[4], a[4] * w, b[4] * w);
+ e[5] = foo (c[5], d[5], a[5] * w, b[5] * w);
+ e[6] = foo (c[6], d[6], a[6] * w, b[6] * w);
+ e[7] = foo (c[7], d[7], a[7] * w, b[7] * w);
+ e[8] = foo (c[8], d[8], a[8] * w, b[8] * w);
+ e[9] = foo (c[9], d[9], a[9] * w, b[9] * w);
+ e[10] = foo (c[10], d[10], a[10] * w, b[10] * w);
+ e[11] = foo (c[11], d[11], a[11] * w, b[11] * w);
+ e[12] = foo (c[12], d[12], a[12] * w, b[12] * w);
+ e[13] = foo (c[13], d[13], a[13] * w, b[13] * w);
+ e[14] = foo (c[14], d[14], a[14] * w, b[14] * w);
+ e[15] = foo (c[15], d[15], a[15] * w, b[15] * w);
+ }
+}
+
+
+int a[N], b[N], c[N], d[N], e[N];
+
+int main ()
+{
+ int i;
+
+ check_vect ();
+
+ for (i = 0; i < N; i++)
+ {
+ a[i] = i;
+ b[i] = 5;
+ e[i] = 0;
+
+ switch (i % 9)
+ {
+ case 0: asm (""); c[i] = i; d[i] = i + 1; break;
+ case 1: c[i] = 0; d[i] = 0; break;
+ case 2: c[i] = i + 1; d[i] = i - 1; break;
+ case 3: c[i] = i; d[i] = i + 7; break;
+ case 4: c[i] = i; d[i] = i; break;
+ case 5: c[i] = i + 16; d[i] = i + 3; break;
+ case 6: c[i] = i - 5; d[i] = i; break;
+ case 7: c[i] = i; d[i] = i; break;
+ case 8: c[i] = i; d[i] = i - 7; break;
+ }
+ }
+
+ bar (a, b, c, d, e, 2);
+ for (i = 0; i < N; i++)
+ if (e[i] != ((i % 3) == 0 || i <= 5 ? 10 : 2 * i))
+ abort ();
+
+ return 0;
+}
+
+/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "vect" { target { i?86-*-* x86_64-*-* } } } } */
+
diff --git a/gcc/tree-vect-slp.c b/gcc/tree-vect-slp.c
index 1424123..fa8291e 100644
--- a/gcc/tree-vect-slp.c
+++ b/gcc/tree-vect-slp.c
@@ -827,6 +827,7 @@ vect_build_slp_tree_1 (vec_info *vinfo,
if (TREE_CODE_CLASS (rhs_code) != tcc_binary
&& TREE_CODE_CLASS (rhs_code) != tcc_unary
&& TREE_CODE_CLASS (rhs_code) != tcc_expression
+ && TREE_CODE_CLASS (rhs_code) != tcc_comparison
&& rhs_code != CALL_EXPR)
{
if (dump_enabled_p ())
@@ -2596,7 +2597,14 @@ vect_get_constant_vectors (tree op, slp_tree slp_node,
struct loop *loop;
gimple_seq ctor_seq = NULL;
- vector_type = get_vectype_for_scalar_type (TREE_TYPE (op));
+ /* Check if vector type is a boolean vector. */
+ if (TREE_CODE (TREE_TYPE (op)) == BOOLEAN_TYPE
+ && (VECTOR_BOOLEAN_TYPE_P (STMT_VINFO_VECTYPE (stmt_vinfo))
+ || (code == COND_EXPR && op_num < 2)))
+ vector_type
+ = build_same_sized_truth_vector_type (STMT_VINFO_VECTYPE (stmt_vinfo));
+ else
+ vector_type = get_vectype_for_scalar_type (TREE_TYPE (op));
nunits = TYPE_VECTOR_SUBPARTS (vector_type);
if (STMT_VINFO_DEF_TYPE (stmt_vinfo) == vect_reduction_def
@@ -2768,8 +2776,21 @@ vect_get_constant_vectors (tree op, slp_tree slp_node,
{
if (CONSTANT_CLASS_P (op))
{
- op = fold_unary (VIEW_CONVERT_EXPR,
- TREE_TYPE (vector_type), op);
+ if (VECTOR_BOOLEAN_TYPE_P (vector_type))
+ {
+ /* Can't use VIEW_CONVERT_EXPR for booleans because
+ of possibly different sizes of scalar value and
+ vector element. */
+ if (integer_zerop (op))
+ op = build_int_cst (TREE_TYPE (vector_type), 0);
+ else if (integer_onep (op))
+ op = build_int_cst (TREE_TYPE (vector_type), 1);
+ else
+ gcc_unreachable ();
+ }
+ else
+ op = fold_unary (VIEW_CONVERT_EXPR,
+ TREE_TYPE (vector_type), op);
gcc_assert (op && CONSTANT_CLASS_P (op));
}
else