[PATCH] Add FMADDSUB and FMSUBADD SLP vectorization patterns and optabs
Richard Biener
rguenther@suse.de
Mon Jul 5 14:09:06 GMT 2021
This adds named expanders for vec_fmaddsub<mode>4 and
vec_fmsubadd<mode>4 which map to x86 vfmaddsubXXXp{ds} and
vfmsubaddXXXp{ds} instructions. This complements the previous
addition of ADDSUB support.
x86 lacks SUBADD and the negate variants of FMA with mixed
plus minus so I did not add optabs or patterns for those but
it would not be difficult if there's a target that has them.
Maybe one of the complex fma patterns match those variants?
I did not dare to rewrite the numerous patterns to the new
canonical name but instead added two new expanders. Note I
did not cover AVX512 since the existing patterns are separated
and I have no easy way to test things there. Handling AVX512
should be easy as followup though.
Bootstrap and testing on x86_64-unknown-linux-gnu in progress.
Any comments?
Thanks,
Richard.
2021-07-05 Richard Biener <rguenther@suse.de>
* doc/md.texi (vec_fmaddsub<mode>4): Document.
(vec_fmsubadd<mode>4): Likewise.
* optabs.def (vec_fmaddsub$a4): Add.
(vec_fmsubadd$a4): Likewise.
* internal-fn.def (IFN_VEC_FMADDSUB): Add.
(IFN_VEC_FMSUBADD): Likewise.
* tree-vect-slp-patterns.c (addsub_pattern::recognize):
Refactor to handle IFN_VEC_FMADDSUB and IFN_VEC_FMSUBADD.
(addsub_pattern::build): Likewise.
* tree-vect-slp.c (vect_optimize_slp): CFN_VEC_FMADDSUB
and CFN_VEC_FMSUBADD are not transparent for permutes.
* config/i386/sse.md (vec_fmaddsub<mode>4): New expander.
(vec_fmsubadd<mode>4): Likewise.
* gcc.target/i386/vect-fmaddsubXXXpd.c: New testcase.
* gcc.target/i386/vect-fmaddsubXXXps.c: Likewise.
* gcc.target/i386/vect-fmsubaddXXXpd.c: Likewise.
* gcc.target/i386/vect-fmsubaddXXXps.c: Likewise.
---
gcc/config/i386/sse.md | 19 ++
gcc/doc/md.texi | 14 ++
gcc/internal-fn.def | 3 +-
gcc/optabs.def | 2 +
.../gcc.target/i386/vect-fmaddsubXXXpd.c | 34 ++++
.../gcc.target/i386/vect-fmaddsubXXXps.c | 34 ++++
.../gcc.target/i386/vect-fmsubaddXXXpd.c | 34 ++++
.../gcc.target/i386/vect-fmsubaddXXXps.c | 34 ++++
gcc/tree-vect-slp-patterns.c | 192 +++++++++++++-----
gcc/tree-vect-slp.c | 2 +
10 files changed, 311 insertions(+), 57 deletions(-)
create mode 100644 gcc/testsuite/gcc.target/i386/vect-fmaddsubXXXpd.c
create mode 100644 gcc/testsuite/gcc.target/i386/vect-fmaddsubXXXps.c
create mode 100644 gcc/testsuite/gcc.target/i386/vect-fmsubaddXXXpd.c
create mode 100644 gcc/testsuite/gcc.target/i386/vect-fmsubaddXXXps.c
diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
index bcf1605d147..6fc13c184bf 100644
--- a/gcc/config/i386/sse.md
+++ b/gcc/config/i386/sse.md
@@ -4644,6 +4644,25 @@
;;
;; But this doesn't seem useful in practice.
+(define_expand "vec_fmaddsub<mode>4"
+ [(set (match_operand:VF 0 "register_operand")
+ (unspec:VF
+ [(match_operand:VF 1 "nonimmediate_operand")
+ (match_operand:VF 2 "nonimmediate_operand")
+ (match_operand:VF 3 "nonimmediate_operand")]
+ UNSPEC_FMADDSUB))]
+ "TARGET_FMA || TARGET_FMA4 || TARGET_AVX512F")
+
+(define_expand "vec_fmsubadd<mode>4"
+ [(set (match_operand:VF 0 "register_operand")
+ (unspec:VF
+ [(match_operand:VF 1 "nonimmediate_operand")
+ (match_operand:VF 2 "nonimmediate_operand")
+ (neg:VF
+ (match_operand:VF 3 "nonimmediate_operand"))]
+ UNSPEC_FMADDSUB))]
+ "TARGET_FMA || TARGET_FMA4 || TARGET_AVX512F")
+
(define_expand "fmaddsub_<mode>"
[(set (match_operand:VF 0 "register_operand")
(unspec:VF
diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi
index 1b918144330..cc92ebd26aa 100644
--- a/gcc/doc/md.texi
+++ b/gcc/doc/md.texi
@@ -5688,6 +5688,20 @@ Alternating subtract, add with even lanes doing subtract and odd
lanes doing addition. Operands 1 and 2 and the outout operand are vectors
with mode @var{m}.
+@cindex @code{vec_fmaddsub@var{m}4} instruction pattern
+@item @samp{vec_fmaddsub@var{m}4}
+Alternating multiply subtract, add with even lanes doing subtract and odd
+lanes doing addition of the third operand to the multiplication result
+of the first two operands. Operands 1, 2 and 3 and the outout operand are vectors
+with mode @var{m}.
+
+@cindex @code{vec_fmsubadd@var{m}4} instruction pattern
+@item @samp{vec_fmsubadd@var{m}4}
+Alternating multiply add, subtract with even lanes doing addition and odd
+lanes doing subtraction of the third operand to the multiplication result
+of the first two operands. Operands 1, 2 and 3 and the outout operand are vectors
+with mode @var{m}.
+
These instructions are not allowed to @code{FAIL}.
@cindex @code{mulhisi3} instruction pattern
diff --git a/gcc/internal-fn.def b/gcc/internal-fn.def
index c3b8e730960..a7003d5da8e 100644
--- a/gcc/internal-fn.def
+++ b/gcc/internal-fn.def
@@ -282,7 +282,8 @@ DEF_INTERNAL_OPTAB_FN (COMPLEX_ADD_ROT270, ECF_CONST, cadd270, binary)
DEF_INTERNAL_OPTAB_FN (COMPLEX_MUL, ECF_CONST, cmul, binary)
DEF_INTERNAL_OPTAB_FN (COMPLEX_MUL_CONJ, ECF_CONST, cmul_conj, binary)
DEF_INTERNAL_OPTAB_FN (VEC_ADDSUB, ECF_CONST, vec_addsub, binary)
-
+DEF_INTERNAL_OPTAB_FN (VEC_FMADDSUB, ECF_CONST, vec_fmaddsub, ternary)
+DEF_INTERNAL_OPTAB_FN (VEC_FMSUBADD, ECF_CONST, vec_fmsubadd, ternary)
/* FP scales. */
DEF_INTERNAL_FLT_FN (LDEXP, ECF_CONST, ldexp, binary)
diff --git a/gcc/optabs.def b/gcc/optabs.def
index 41ab2598eb6..51acc1be8f5 100644
--- a/gcc/optabs.def
+++ b/gcc/optabs.def
@@ -408,6 +408,8 @@ OPTAB_D (vec_widen_usubl_lo_optab, "vec_widen_usubl_lo_$a")
OPTAB_D (vec_widen_uaddl_hi_optab, "vec_widen_uaddl_hi_$a")
OPTAB_D (vec_widen_uaddl_lo_optab, "vec_widen_uaddl_lo_$a")
OPTAB_D (vec_addsub_optab, "vec_addsub$a3")
+OPTAB_D (vec_fmaddsub_optab, "vec_fmaddsub$a4")
+OPTAB_D (vec_fmsubadd_optab, "vec_fmsubadd$a4")
OPTAB_D (sync_add_optab, "sync_add$I$a")
OPTAB_D (sync_and_optab, "sync_and$I$a")
diff --git a/gcc/testsuite/gcc.target/i386/vect-fmaddsubXXXpd.c b/gcc/testsuite/gcc.target/i386/vect-fmaddsubXXXpd.c
new file mode 100644
index 00000000000..b30d10731a7
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/vect-fmaddsubXXXpd.c
@@ -0,0 +1,34 @@
+/* { dg-do run } */
+/* { dg-require-effective-target fma } */
+/* { dg-options "-O3 -mfma -save-temps" } */
+
+#include "fma-check.h"
+
+void __attribute__((noipa))
+check_fmaddsub (double * __restrict a, double *b, double *c, int n)
+{
+ for (int i = 0; i < n; ++i)
+ {
+ a[2*i + 0] = b[2*i + 0] * c[2*i + 0] - a[2*i + 0];
+ a[2*i + 1] = b[2*i + 1] * c[2*i + 1] + a[2*i + 1];
+ }
+}
+
+static void
+fma_test (void)
+{
+ double a[4], b[4], c[4];
+ for (int i = 0; i < 4; ++i)
+ {
+ a[i] = i;
+ b[i] = 3*i;
+ c[i] = 7*i;
+ }
+ check_fmaddsub (a, b, c, 2);
+ const double d[4] = { 0., 22., 82., 192. };
+ for (int i = 0; i < 4; ++i)
+ if (a[i] != d[i])
+ __builtin_abort ();
+}
+
+/* { dg-final { scan-assembler "fmaddsub...pd" } } */
diff --git a/gcc/testsuite/gcc.target/i386/vect-fmaddsubXXXps.c b/gcc/testsuite/gcc.target/i386/vect-fmaddsubXXXps.c
new file mode 100644
index 00000000000..cd2af8725a3
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/vect-fmaddsubXXXps.c
@@ -0,0 +1,34 @@
+/* { dg-do run } */
+/* { dg-require-effective-target fma } */
+/* { dg-options "-O3 -mfma -save-temps" } */
+
+#include "fma-check.h"
+
+void __attribute__((noipa))
+check_fmaddsub (float * __restrict a, float *b, float *c, int n)
+{
+ for (int i = 0; i < n; ++i)
+ {
+ a[2*i + 0] = b[2*i + 0] * c[2*i + 0] - a[2*i + 0];
+ a[2*i + 1] = b[2*i + 1] * c[2*i + 1] + a[2*i + 1];
+ }
+}
+
+static void
+fma_test (void)
+{
+ float a[4], b[4], c[4];
+ for (int i = 0; i < 4; ++i)
+ {
+ a[i] = i;
+ b[i] = 3*i;
+ c[i] = 7*i;
+ }
+ check_fmaddsub (a, b, c, 2);
+ const float d[4] = { 0., 22., 82., 192. };
+ for (int i = 0; i < 4; ++i)
+ if (a[i] != d[i])
+ __builtin_abort ();
+}
+
+/* { dg-final { scan-assembler "fmaddsub...ps" } } */
diff --git a/gcc/testsuite/gcc.target/i386/vect-fmsubaddXXXpd.c b/gcc/testsuite/gcc.target/i386/vect-fmsubaddXXXpd.c
new file mode 100644
index 00000000000..7ca2a275cc1
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/vect-fmsubaddXXXpd.c
@@ -0,0 +1,34 @@
+/* { dg-do run } */
+/* { dg-require-effective-target fma } */
+/* { dg-options "-O3 -mfma -save-temps" } */
+
+#include "fma-check.h"
+
+void __attribute__((noipa))
+check_fmsubadd (double * __restrict a, double *b, double *c, int n)
+{
+ for (int i = 0; i < n; ++i)
+ {
+ a[2*i + 0] = b[2*i + 0] * c[2*i + 0] + a[2*i + 0];
+ a[2*i + 1] = b[2*i + 1] * c[2*i + 1] - a[2*i + 1];
+ }
+}
+
+static void
+fma_test (void)
+{
+ double a[4], b[4], c[4];
+ for (int i = 0; i < 4; ++i)
+ {
+ a[i] = i;
+ b[i] = 3*i;
+ c[i] = 7*i;
+ }
+ check_fmsubadd (a, b, c, 2);
+ const double d[4] = { 0., 20., 86., 186. };
+ for (int i = 0; i < 4; ++i)
+ if (a[i] != d[i])
+ __builtin_abort ();
+}
+
+/* { dg-final { scan-assembler "fmsubadd...pd" } } */
diff --git a/gcc/testsuite/gcc.target/i386/vect-fmsubaddXXXps.c b/gcc/testsuite/gcc.target/i386/vect-fmsubaddXXXps.c
new file mode 100644
index 00000000000..9ddd0e423db
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/vect-fmsubaddXXXps.c
@@ -0,0 +1,34 @@
+/* { dg-do run } */
+/* { dg-require-effective-target fma } */
+/* { dg-options "-O3 -mfma -save-temps" } */
+
+#include "fma-check.h"
+
+void __attribute__((noipa))
+check_fmsubadd (float * __restrict a, float *b, float *c, int n)
+{
+ for (int i = 0; i < n; ++i)
+ {
+ a[2*i + 0] = b[2*i + 0] * c[2*i + 0] + a[2*i + 0];
+ a[2*i + 1] = b[2*i + 1] * c[2*i + 1] - a[2*i + 1];
+ }
+}
+
+static void
+fma_test (void)
+{
+ float a[4], b[4], c[4];
+ for (int i = 0; i < 4; ++i)
+ {
+ a[i] = i;
+ b[i] = 3*i;
+ c[i] = 7*i;
+ }
+ check_fmsubadd (a, b, c, 2);
+ const float d[4] = { 0., 20., 86., 186. };
+ for (int i = 0; i < 4; ++i)
+ if (a[i] != d[i])
+ __builtin_abort ();
+}
+
+/* { dg-final { scan-assembler "fmsubadd...ps" } } */
diff --git a/gcc/tree-vect-slp-patterns.c b/gcc/tree-vect-slp-patterns.c
index 2671f91972d..f774cac4a4d 100644
--- a/gcc/tree-vect-slp-patterns.c
+++ b/gcc/tree-vect-slp-patterns.c
@@ -1496,8 +1496,8 @@ complex_operations_pattern::build (vec_info * /* vinfo */)
class addsub_pattern : public vect_pattern
{
public:
- addsub_pattern (slp_tree *node)
- : vect_pattern (node, NULL, IFN_VEC_ADDSUB) {};
+ addsub_pattern (slp_tree *node, internal_fn ifn)
+ : vect_pattern (node, NULL, ifn) {};
void build (vec_info *);
@@ -1510,46 +1510,68 @@ addsub_pattern::recognize (slp_tree_to_load_perm_map_t *, slp_tree *node_)
{
slp_tree node = *node_;
if (SLP_TREE_CODE (node) != VEC_PERM_EXPR
- || SLP_TREE_CHILDREN (node).length () != 2)
+ || SLP_TREE_CHILDREN (node).length () != 2
+ || SLP_TREE_LANE_PERMUTATION (node).length () % 2)
return NULL;
/* Match a blend of a plus and a minus op with the same number of plus and
minus lanes on the same operands. */
- slp_tree sub = SLP_TREE_CHILDREN (node)[0];
- slp_tree add = SLP_TREE_CHILDREN (node)[1];
- bool swapped_p = false;
- if (vect_match_expression_p (sub, PLUS_EXPR))
- {
- std::swap (add, sub);
- swapped_p = true;
- }
- if (!(vect_match_expression_p (add, PLUS_EXPR)
- && vect_match_expression_p (sub, MINUS_EXPR)))
+ unsigned l0 = SLP_TREE_LANE_PERMUTATION (node)[0].first;
+ unsigned l1 = SLP_TREE_LANE_PERMUTATION (node)[1].first;
+ if (l0 == l1)
+ return NULL;
+ bool l0add_p = vect_match_expression_p (SLP_TREE_CHILDREN (node)[l0],
+ PLUS_EXPR);
+ if (!l0add_p
+ && !vect_match_expression_p (SLP_TREE_CHILDREN (node)[l0], MINUS_EXPR))
+ return NULL;
+ bool l1add_p = vect_match_expression_p (SLP_TREE_CHILDREN (node)[l1],
+ PLUS_EXPR);
+ if (!l1add_p
+ && !vect_match_expression_p (SLP_TREE_CHILDREN (node)[l1], MINUS_EXPR))
return NULL;
- if (!((SLP_TREE_CHILDREN (sub)[0] == SLP_TREE_CHILDREN (add)[0]
- && SLP_TREE_CHILDREN (sub)[1] == SLP_TREE_CHILDREN (add)[1])
- || (SLP_TREE_CHILDREN (sub)[0] == SLP_TREE_CHILDREN (add)[1]
- && SLP_TREE_CHILDREN (sub)[1] == SLP_TREE_CHILDREN (add)[0])))
+
+ slp_tree l0node = SLP_TREE_CHILDREN (node)[l0];
+ slp_tree l1node = SLP_TREE_CHILDREN (node)[l1];
+ if (!((SLP_TREE_CHILDREN (l0node)[0] == SLP_TREE_CHILDREN (l1node)[0]
+ && SLP_TREE_CHILDREN (l0node)[1] == SLP_TREE_CHILDREN (l1node)[1])
+ || (SLP_TREE_CHILDREN (l0node)[0] == SLP_TREE_CHILDREN (l1node)[1]
+ && SLP_TREE_CHILDREN (l0node)[1] == SLP_TREE_CHILDREN (l1node)[0])))
return NULL;
for (unsigned i = 0; i < SLP_TREE_LANE_PERMUTATION (node).length (); ++i)
{
std::pair<unsigned, unsigned> perm = SLP_TREE_LANE_PERMUTATION (node)[i];
- if (swapped_p)
- perm.first = perm.first == 0 ? 1 : 0;
- /* It has to be alternating -, +, -, ...
+ /* It has to be alternating -, +, -,
While we could permute the .ADDSUB inputs and the .ADDSUB output
that's only profitable over the add + sub + blend if at least
one of the permute is optimized which we can't determine here. */
- if (perm.first != (i & 1)
+ if (perm.first != ((i & 1) ? l1 : l0)
|| perm.second != i)
return NULL;
}
- if (!vect_pattern_validate_optab (IFN_VEC_ADDSUB, node))
- return NULL;
+ /* Now we have either { -, +, -, + ... } (!l0add_p) or { +, -, +, - ... }
+ (l0add_p), see whether we have FMA variants. */
+ if (!l0add_p
+ && vect_match_expression_p (SLP_TREE_CHILDREN (l0node)[0], MULT_EXPR))
+ {
+ /* (c * d) -+ a */
+ if (vect_pattern_validate_optab (IFN_VEC_FMADDSUB, node))
+ return new addsub_pattern (node_, IFN_VEC_FMADDSUB);
+ }
+ else if (l0add_p
+ && vect_match_expression_p (SLP_TREE_CHILDREN (l1node)[0], MULT_EXPR))
+ {
+ /* (c * d) +- a */
+ if (vect_pattern_validate_optab (IFN_VEC_FMSUBADD, node))
+ return new addsub_pattern (node_, IFN_VEC_FMSUBADD);
+ }
- return new addsub_pattern (node_);
+ if (!l0add_p && vect_pattern_validate_optab (IFN_VEC_ADDSUB, node))
+ return new addsub_pattern (node_, IFN_VEC_ADDSUB);
+
+ return NULL;
}
void
@@ -1557,38 +1579,96 @@ addsub_pattern::build (vec_info *vinfo)
{
slp_tree node = *m_node;
- slp_tree sub = SLP_TREE_CHILDREN (node)[0];
- slp_tree add = SLP_TREE_CHILDREN (node)[1];
- if (vect_match_expression_p (sub, PLUS_EXPR))
- std::swap (add, sub);
-
- /* Modify the blend node in-place. */
- SLP_TREE_CHILDREN (node)[0] = SLP_TREE_CHILDREN (sub)[0];
- SLP_TREE_CHILDREN (node)[1] = SLP_TREE_CHILDREN (sub)[1];
- SLP_TREE_REF_COUNT (SLP_TREE_CHILDREN (node)[0])++;
- SLP_TREE_REF_COUNT (SLP_TREE_CHILDREN (node)[1])++;
-
- /* Build IFN_VEC_ADDSUB from the sub representative operands. */
- stmt_vec_info rep = SLP_TREE_REPRESENTATIVE (sub);
- gcall *call = gimple_build_call_internal (IFN_VEC_ADDSUB, 2,
- gimple_assign_rhs1 (rep->stmt),
- gimple_assign_rhs2 (rep->stmt));
- gimple_call_set_lhs (call, make_ssa_name
- (TREE_TYPE (gimple_assign_lhs (rep->stmt))));
- gimple_call_set_nothrow (call, true);
- gimple_set_bb (call, gimple_bb (rep->stmt));
- stmt_vec_info new_rep = vinfo->add_pattern_stmt (call, rep);
- SLP_TREE_REPRESENTATIVE (node) = new_rep;
- STMT_VINFO_RELEVANT (new_rep) = vect_used_in_scope;
- STMT_SLP_TYPE (new_rep) = pure_slp;
- STMT_VINFO_VECTYPE (new_rep) = SLP_TREE_VECTYPE (node);
- STMT_VINFO_SLP_VECT_ONLY_PATTERN (new_rep) = true;
- STMT_VINFO_REDUC_DEF (new_rep) = STMT_VINFO_REDUC_DEF (vect_orig_stmt (rep));
- SLP_TREE_CODE (node) = ERROR_MARK;
- SLP_TREE_LANE_PERMUTATION (node).release ();
-
- vect_free_slp_tree (sub);
- vect_free_slp_tree (add);
+ unsigned l0 = SLP_TREE_LANE_PERMUTATION (node)[0].first;
+ unsigned l1 = SLP_TREE_LANE_PERMUTATION (node)[1].first;
+
+ switch (m_ifn)
+ {
+ case IFN_VEC_ADDSUB:
+ {
+ slp_tree sub = SLP_TREE_CHILDREN (node)[l0];
+ slp_tree add = SLP_TREE_CHILDREN (node)[l1];
+
+ /* Modify the blend node in-place. */
+ SLP_TREE_CHILDREN (node)[0] = SLP_TREE_CHILDREN (sub)[0];
+ SLP_TREE_CHILDREN (node)[1] = SLP_TREE_CHILDREN (sub)[1];
+ SLP_TREE_REF_COUNT (SLP_TREE_CHILDREN (node)[0])++;
+ SLP_TREE_REF_COUNT (SLP_TREE_CHILDREN (node)[1])++;
+
+ /* Build IFN_VEC_ADDSUB from the sub representative operands. */
+ stmt_vec_info rep = SLP_TREE_REPRESENTATIVE (sub);
+ gcall *call = gimple_build_call_internal (IFN_VEC_ADDSUB, 2,
+ gimple_assign_rhs1 (rep->stmt),
+ gimple_assign_rhs2 (rep->stmt));
+ gimple_call_set_lhs (call, make_ssa_name
+ (TREE_TYPE (gimple_assign_lhs (rep->stmt))));
+ gimple_call_set_nothrow (call, true);
+ gimple_set_bb (call, gimple_bb (rep->stmt));
+ stmt_vec_info new_rep = vinfo->add_pattern_stmt (call, rep);
+ SLP_TREE_REPRESENTATIVE (node) = new_rep;
+ STMT_VINFO_RELEVANT (new_rep) = vect_used_in_scope;
+ STMT_SLP_TYPE (new_rep) = pure_slp;
+ STMT_VINFO_VECTYPE (new_rep) = SLP_TREE_VECTYPE (node);
+ STMT_VINFO_SLP_VECT_ONLY_PATTERN (new_rep) = true;
+ STMT_VINFO_REDUC_DEF (new_rep) = STMT_VINFO_REDUC_DEF (vect_orig_stmt (rep));
+ SLP_TREE_CODE (node) = ERROR_MARK;
+ SLP_TREE_LANE_PERMUTATION (node).release ();
+
+ vect_free_slp_tree (sub);
+ vect_free_slp_tree (add);
+ break;
+ }
+ case IFN_VEC_FMADDSUB:
+ case IFN_VEC_FMSUBADD:
+ {
+ slp_tree sub, add;
+ if (m_ifn == IFN_VEC_FMADDSUB)
+ {
+ sub = SLP_TREE_CHILDREN (node)[l0];
+ add = SLP_TREE_CHILDREN (node)[l1];
+ }
+ else /* m_ifn == IFN_VEC_FMSUBADD */
+ {
+ sub = SLP_TREE_CHILDREN (node)[l1];
+ add = SLP_TREE_CHILDREN (node)[l0];
+ }
+ slp_tree mul = SLP_TREE_CHILDREN (sub)[0];
+ /* Modify the blend node in-place. */
+ SLP_TREE_CHILDREN (node).safe_grow (3, true);
+ SLP_TREE_CHILDREN (node)[0] = SLP_TREE_CHILDREN (mul)[0];
+ SLP_TREE_CHILDREN (node)[1] = SLP_TREE_CHILDREN (mul)[1];
+ SLP_TREE_CHILDREN (node)[2] = SLP_TREE_CHILDREN (sub)[1];
+ SLP_TREE_REF_COUNT (SLP_TREE_CHILDREN (node)[0])++;
+ SLP_TREE_REF_COUNT (SLP_TREE_CHILDREN (node)[1])++;
+ SLP_TREE_REF_COUNT (SLP_TREE_CHILDREN (node)[2])++;
+
+ /* Build IFN_VEC_FMADDSUB from the mul/sub representative operands. */
+ stmt_vec_info srep = SLP_TREE_REPRESENTATIVE (sub);
+ stmt_vec_info mrep = SLP_TREE_REPRESENTATIVE (mul);
+ gcall *call = gimple_build_call_internal (m_ifn, 3,
+ gimple_assign_rhs1 (mrep->stmt),
+ gimple_assign_rhs2 (mrep->stmt),
+ gimple_assign_rhs2 (srep->stmt));
+ gimple_call_set_lhs (call, make_ssa_name
+ (TREE_TYPE (gimple_assign_lhs (srep->stmt))));
+ gimple_call_set_nothrow (call, true);
+ gimple_set_bb (call, gimple_bb (srep->stmt));
+ stmt_vec_info new_rep = vinfo->add_pattern_stmt (call, srep);
+ SLP_TREE_REPRESENTATIVE (node) = new_rep;
+ STMT_VINFO_RELEVANT (new_rep) = vect_used_in_scope;
+ STMT_SLP_TYPE (new_rep) = pure_slp;
+ STMT_VINFO_VECTYPE (new_rep) = SLP_TREE_VECTYPE (node);
+ STMT_VINFO_SLP_VECT_ONLY_PATTERN (new_rep) = true;
+ STMT_VINFO_REDUC_DEF (new_rep) = STMT_VINFO_REDUC_DEF (vect_orig_stmt (srep));
+ SLP_TREE_CODE (node) = ERROR_MARK;
+ SLP_TREE_LANE_PERMUTATION (node).release ();
+
+ vect_free_slp_tree (sub);
+ vect_free_slp_tree (add);
+ break;
+ }
+ default:;
+ }
}
/*******************************************************************************
diff --git a/gcc/tree-vect-slp.c b/gcc/tree-vect-slp.c
index f08797c2bc0..5357cd0e7a4 100644
--- a/gcc/tree-vect-slp.c
+++ b/gcc/tree-vect-slp.c
@@ -3728,6 +3728,8 @@ vect_optimize_slp (vec_info *vinfo)
case CFN_COMPLEX_MUL:
case CFN_COMPLEX_MUL_CONJ:
case CFN_VEC_ADDSUB:
+ case CFN_VEC_FMADDSUB:
+ case CFN_VEC_FMSUBADD:
vertices[idx].perm_in = 0;
vertices[idx].perm_out = 0;
default:;
--
2.26.2
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