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From: Robin Dapp <rdapp.gcc@gmail.com>
To: gcc-patches <gcc-patches@gcc.gnu.org>,
	palmer <palmer@dabbelt.com>, Kito Cheng <kito.cheng@gmail.com>,
	"juzhe.zhong@rivai.ai" <juzhe.zhong@rivai.ai>,
	jeffreyalaw <jeffreyalaw@gmail.com>
Cc: rdapp.gcc@gmail.com
Subject: [PATCH] RISC-V: Implement autovec copysign.
Date: Tue, 20 Jun 2023 14:47:43 +0200	[thread overview]
Message-ID: <8ea7c935-ee31-db3d-9672-14833b63d3b0@gmail.com> (raw)

Hi,

this adds vector copysign, ncopysign and xorsign as well as the
accompanying tests.

In order to easily match the ncopysign patterns I changed the
builtin implementation slightly.  Juzhe might want to comment
on that.  For now I kept the <nx> attribute's name even though
it doesn't emit an "n" anymore.

Regards
 Robin


gcc/ChangeLog:

	* config/riscv/autovec.md (copysign<mode>3): Add expander.
	(xorsign<mode>3): Dito.
	* config/riscv/riscv-vector-builtins-bases.cc (class vfsgnjn):
	New class.
	* config/riscv/vector-iterators.md (copysign): Remove ncopysign.
	(xorsign): Dito.
	(n): Dito.
	(x): Dito.
	* config/riscv/vector.md (@pred_ncopysign<mode>): Split off.
	(@pred_ncopysign<mode>_scalar): Dito.

gcc/testsuite/ChangeLog:

	* gcc.target/riscv/rvv/autovec/binop/copysign-run.c: New test.
	* gcc.target/riscv/rvv/autovec/binop/copysign-rv64gcv.c: New test.
	* gcc.target/riscv/rvv/autovec/binop/copysign-rv32gcv.c: New test.
	* gcc.target/riscv/rvv/autovec/binop/copysign-template.h: New test.
	* gcc.target/riscv/rvv/autovec/binop/copysign-zvfh-run.c: New test.
---
 gcc/config/riscv/autovec.md                   | 43 +++++++++
 .../riscv/riscv-vector-builtins-bases.cc      | 18 +++-
 gcc/config/riscv/vector-iterators.md          |  9 +-
 gcc/config/riscv/vector.md                    | 43 +++++++++
 .../riscv/rvv/autovec/binop/copysign-run.c    | 89 +++++++++++++++++++
 .../rvv/autovec/binop/copysign-rv32gcv.c      |  8 ++
 .../rvv/autovec/binop/copysign-rv64gcv.c      |  8 ++
 .../rvv/autovec/binop/copysign-template.h     | 78 ++++++++++++++++
 .../rvv/autovec/binop/copysign-zvfh-run.c     | 83 +++++++++++++++++
 9 files changed, 371 insertions(+), 8 deletions(-)
 create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/copysign-run.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/copysign-rv32gcv.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/copysign-rv64gcv.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/copysign-template.h
 create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/copysign-zvfh-run.c

diff --git a/gcc/config/riscv/autovec.md b/gcc/config/riscv/autovec.md
index f1641d7e1ea..f2e69aaf102 100644
--- a/gcc/config/riscv/autovec.md
+++ b/gcc/config/riscv/autovec.md
@@ -804,3 +804,46 @@ (define_expand "<optab><mode>3"
 				 riscv_vector::RVV_BINOP, operands);
   DONE;
 })
+
+;; -------------------------------------------------------------------------------
+;; ---- [FP] Sign copying
+;; -------------------------------------------------------------------------------
+;; Includes:
+;; - vfsgnj.vv/vfsgnjn.vv
+;; - vfsgnj.vf/vfsgnjn.vf
+;; -------------------------------------------------------------------------------
+
+;; Leave the pattern like this as to still allow combine to match
+;; a negated copysign (see vector.md) before adding the UNSPEC_VPREDICATE later.
+(define_insn_and_split "copysign<mode>3"
+  [(set (match_operand:VF 0 "register_operand"      "=vd, vd, vr, vr")
+    (unspec:VF
+     [(match_operand:VF 1 "register_operand"        " vr, vr, vr, vr")
+     (match_operand:VF 2 "register_operand"         " vr, vr, vr, vr")] UNSPEC_VCOPYSIGN))]
+  "TARGET_VECTOR && can_create_pseudo_p ()"
+  "#"
+  "&& 1"
+  [(const_int 0)]
+{
+  riscv_vector::emit_vlmax_insn (code_for_pred (UNSPEC_VCOPYSIGN, <MODE>mode),
+				 riscv_vector::RVV_BINOP, operands);
+  DONE;
+}
+  [(set_attr "type" "vfsgnj")
+   (set_attr "mode" "<MODE>")])
+
+;; -------------------------------------------------------------------------------
+;; Includes:
+;; - vfsgnjx.vv
+;; - vfsgnjx.vf
+;; -------------------------------------------------------------------------------
+(define_expand "xorsign<mode>3"
+  [(match_operand:VF_AUTO 0 "register_operand")
+    (match_operand:VF_AUTO 1 "register_operand")
+    (match_operand:VF_AUTO 2 "register_operand")]
+  "TARGET_VECTOR"
+{
+  riscv_vector::emit_vlmax_insn (code_for_pred (UNSPEC_VXORSIGN, <MODE>mode),
+				 riscv_vector::RVV_BINOP, operands);
+  DONE;
+})
diff --git a/gcc/config/riscv/riscv-vector-builtins-bases.cc b/gcc/config/riscv/riscv-vector-builtins-bases.cc
index c6c53dc13a5..0313986f6b9 100644
--- a/gcc/config/riscv/riscv-vector-builtins-bases.cc
+++ b/gcc/config/riscv/riscv-vector-builtins-bases.cc
@@ -1212,7 +1212,7 @@ public:
   }
 };
 
-/* Implements vfsqrt7/vfrec7/vfclass/vfsgnj/vfsgnjn/vfsgnjx.  */
+/* Implements vfsqrt7/vfrec7/vfclass/vfsgnj/vfsgnjx.  */
 template<int UNSPEC>
 class float_misc : public function_base
 {
@@ -1227,6 +1227,20 @@ public:
   }
 };
 
+/* Implements vfsgnjn.  */
+class vfsgnjn : public function_base
+{
+public:
+  rtx expand (function_expander &e) const override
+  {
+    if (e.op_info->op == OP_TYPE_vf)
+      return e.use_exact_insn (code_for_pred_ncopysign_scalar (e.vector_mode ()));
+    if (e.op_info->op == OP_TYPE_vv)
+      return e.use_exact_insn (code_for_pred_ncopysign (e.vector_mode ()));
+    gcc_unreachable ();
+  }
+};
+
 /* Implements vmfeq/vmfne/vmflt/vmfgt/vmfle/vmfge.  */
 template<rtx_code CODE>
 class fcmp : public function_base
@@ -2031,7 +2045,7 @@ static CONSTEXPR const float_misc<UNSPEC_VFREC7> vfrec7_obj;
 static CONSTEXPR const binop<SMIN> vfmin_obj;
 static CONSTEXPR const binop<SMAX> vfmax_obj;
 static CONSTEXPR const float_misc<UNSPEC_VCOPYSIGN> vfsgnj_obj;
-static CONSTEXPR const float_misc<UNSPEC_VNCOPYSIGN> vfsgnjn_obj;
+static CONSTEXPR const vfsgnjn vfsgnjn_obj;
 static CONSTEXPR const float_misc<UNSPEC_VXORSIGN> vfsgnjx_obj;
 static CONSTEXPR const unop<NEG> vfneg_obj;
 static CONSTEXPR const unop<ABS> vfabs_obj;
diff --git a/gcc/config/riscv/vector-iterators.md b/gcc/config/riscv/vector-iterators.md
index 6ca1c54c709..318e70faef9 100644
--- a/gcc/config/riscv/vector-iterators.md
+++ b/gcc/config/riscv/vector-iterators.md
@@ -1480,14 +1480,11 @@ (define_int_attr misc_op [(UNSPEC_VMSBF "sbf") (UNSPEC_VMSIF "sif") (UNSPEC_VMSO
 
 (define_int_attr float_insn_type [(UNSPEC_VFRSQRT7 "vfsqrt") (UNSPEC_VFREC7 "vfrecp")])
 
-(define_int_iterator VCOPYSIGNS [UNSPEC_VCOPYSIGN UNSPEC_VNCOPYSIGN UNSPEC_VXORSIGN])
+(define_int_iterator VCOPYSIGNS [UNSPEC_VCOPYSIGN UNSPEC_VXORSIGN])
 
-(define_int_attr copysign [(UNSPEC_VCOPYSIGN "copysign")
-			   (UNSPEC_VNCOPYSIGN "ncopysign")
-			   (UNSPEC_VXORSIGN "xorsign")])
+(define_int_attr copysign [(UNSPEC_VCOPYSIGN "copysign") (UNSPEC_VXORSIGN "xorsign")])
 
-(define_int_attr nx [(UNSPEC_VCOPYSIGN "") (UNSPEC_VNCOPYSIGN "n")
-		     (UNSPEC_VXORSIGN "x")])
+(define_int_attr nx [(UNSPEC_VCOPYSIGN "") (UNSPEC_VXORSIGN "x")])
 
 (define_int_attr ud [(UNSPEC_VSLIDEUP "up") (UNSPEC_VSLIDEDOWN "down")
 		     (UNSPEC_VSLIDE1UP "1up") (UNSPEC_VSLIDE1DOWN "1down")
diff --git a/gcc/config/riscv/vector.md b/gcc/config/riscv/vector.md
index 884e7435cc2..aa81b9023d8 100644
--- a/gcc/config/riscv/vector.md
+++ b/gcc/config/riscv/vector.md
@@ -5820,6 +5820,27 @@ (define_insn "@pred_<copysign><mode>"
   [(set_attr "type" "vfsgnj")
    (set_attr "mode" "<MODE>")])
 
+(define_insn "@pred_ncopysign<mode>"
+  [(set (match_operand:VF 0 "register_operand"           "=vd, vd, vr, vr")
+	(if_then_else:VF
+	  (unspec:<VM>
+	    [(match_operand:<VM> 1 "vector_mask_operand" " vm, vm,Wc1,Wc1")
+	     (match_operand 5 "vector_length_operand"    " rK, rK, rK, rK")
+	     (match_operand 6 "const_int_operand"        "  i,  i,  i,  i")
+	     (match_operand 7 "const_int_operand"        "  i,  i,  i,  i")
+	     (match_operand 8 "const_int_operand"        "  i,  i,  i,  i")
+	     (reg:SI VL_REGNUM)
+	     (reg:SI VTYPE_REGNUM)] UNSPEC_VPREDICATE)
+	  (neg:VF
+	    (unspec:VF
+	      [(match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
+	       (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr")] UNSPEC_VCOPYSIGN))
+	  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
+  "TARGET_VECTOR"
+  "vfsgnjn.vv\t%0,%3,%4%p1"
+  [(set_attr "type" "vfsgnj")
+   (set_attr "mode" "<MODE>")])
+
 (define_insn "@pred_<copysign><mode>_scalar"
   [(set (match_operand:VF 0 "register_operand"           "=vd, vd, vr, vr")
 	(if_then_else:VF
@@ -5841,6 +5862,28 @@ (define_insn "@pred_<copysign><mode>_scalar"
   [(set_attr "type" "vfsgnj")
    (set_attr "mode" "<MODE>")])
 
+(define_insn "@pred_ncopysign<mode>_scalar"
+  [(set (match_operand:VF 0 "register_operand"           "=vd, vd, vr, vr")
+	(if_then_else:VF
+	  (unspec:<VM>
+	    [(match_operand:<VM> 1 "vector_mask_operand" " vm, vm,Wc1,Wc1")
+	     (match_operand 5 "vector_length_operand"    " rK, rK, rK, rK")
+	     (match_operand 6 "const_int_operand"        "  i,  i,  i,  i")
+	     (match_operand 7 "const_int_operand"        "  i,  i,  i,  i")
+	     (match_operand 8 "const_int_operand"        "  i,  i,  i,  i")
+	     (reg:SI VL_REGNUM)
+	     (reg:SI VTYPE_REGNUM)] UNSPEC_VPREDICATE)
+	  (neg:VF
+	    (unspec:VF
+	      [(match_operand:VF 3 "register_operand"      " vr, vr, vr, vr")
+	       (vec_duplicate:VF
+		 (match_operand:<VEL> 4 "register_operand" "  f,  f,  f,  f"))] UNSPEC_VCOPYSIGN))
+	  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
+  "TARGET_VECTOR"
+  "vfsgnjn.vf\t%0,%3,%4%p1"
+  [(set_attr "type" "vfsgnj")
+   (set_attr "mode" "<MODE>")])
+
 ;; -------------------------------------------------------------------------------
 ;; ---- Predicated floating-point ternary operations
 ;; -------------------------------------------------------------------------------
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/copysign-run.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/copysign-run.c
new file mode 100644
index 00000000000..7a6d429c9a9
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/copysign-run.c
@@ -0,0 +1,89 @@
+/* { dg-do run { target { riscv_vector } } } */
+/* { dg-additional-options "-std=c99 -fno-vect-cost-model --param=riscv-autovec-preference=fixed-vlmax -ffast-math" } */
+
+#include "copysign-template.h"
+
+#include <assert.h>
+
+#define SZ 512
+
+#define EPS 1e-6
+
+#define RUN(TYPE,VAL)							       \
+  TYPE a##TYPE[SZ];							       \
+  TYPE b##TYPE[SZ];	  						       \
+  for (int i = 0; i < SZ; i++)						       \
+  {                             					       \
+    a##TYPE[i] = i;							       \
+    b##TYPE[i] = (i & 1) ? VAL : -VAL;					       \
+  }                             					       \
+  copysign_##TYPE (a##TYPE, a##TYPE, b##TYPE, SZ);			       \
+  for (int i = 0; i < SZ; i++)						       \
+    assert (__builtin_fabs (a##TYPE[i] - ((i & 1) ? i : -i)) < EPS);	       \
+
+#define RUN2(TYPE,VAL)							       \
+  TYPE a2##TYPE[SZ];							       \
+  for (int i = 0; i < SZ; i++)						       \
+    a2##TYPE[i] = i;							       \
+  copysigns_##TYPE (a2##TYPE, a2##TYPE, -VAL, SZ);			       \
+  for (int i = 0; i < SZ; i++)						       \
+    assert (__builtin_fabs (a2##TYPE[i] + i) < EPS);			       \
+
+#define RUN3(TYPE,VAL)							       \
+  TYPE a3##TYPE[SZ];							       \
+  TYPE b3##TYPE[SZ];	  						       \
+  for (int i = 0; i < SZ; i++)						       \
+  {                             					       \
+    a3##TYPE[i] = (i & 1) ? -i : i;					       \
+    b3##TYPE[i] = (i & 1) ? VAL : -VAL;					       \
+  }                             					       \
+  xorsign_##TYPE (a3##TYPE, a3##TYPE, b3##TYPE, SZ);			       \
+  for (int i = 0; i < SZ; i++)						       \
+    assert (__builtin_fabs (a3##TYPE[i] + i) < EPS);			       \
+
+#define RUN4(TYPE,VAL)							       \
+  TYPE a4##TYPE[SZ];							       \
+  for (int i = 0; i < SZ; i++)						       \
+    a4##TYPE[i] = -i;							       \
+  xorsigns_##TYPE (a4##TYPE, a4##TYPE, -VAL, SZ);			       \
+  for (int i = 0; i < SZ; i++)						       \
+    assert (__builtin_fabs (a4##TYPE[i] - i) < EPS);			       \
+
+#define RUN5(TYPE,VAL)							       \
+  TYPE a5##TYPE[SZ];							       \
+  TYPE b5##TYPE[SZ];	  						       \
+  for (int i = 0; i < SZ; i++)						       \
+  {                             					       \
+    a5##TYPE[i] = i;							       \
+    b5##TYPE[i] = (i & 1) ? VAL : -VAL;					       \
+  }                             					       \
+  ncopysign_##TYPE (a5##TYPE, a5##TYPE, b##TYPE, SZ);			       \
+  for (int i = 0; i < SZ; i++)						       \
+    assert (__builtin_fabs (-a5##TYPE[i] - ((i & 1) ? i : -i)) < EPS);	       \
+
+#define RUN6(TYPE,VAL)							       \
+  TYPE a6##TYPE[SZ];							       \
+  for (int i = 0; i < SZ; i++)						       \
+    a6##TYPE[i] = i;							       \
+  ncopysigns_##TYPE (a6##TYPE, a6##TYPE, -VAL, SZ);			       \
+  for (int i = 0; i < SZ; i++)						       \
+    assert (__builtin_fabs (-a6##TYPE[i] + i) < EPS);			       \
+
+#define RUN_ALL()							       \
+ RUN(float, 5)								       \
+ RUN(double, 6)								       \
+ RUN2(float, 11)							       \
+ RUN2(double, 12)							       \
+ RUN3(float, 16)							       \
+ RUN3(double, 18)							       \
+ RUN4(float, 17)							       \
+ RUN4(double, 19)							       \
+ RUN5(float, 123)							       \
+ RUN5(double, 523)							       \
+ RUN6(float, 777)							       \
+ RUN6(double, 877)							       \
+
+int main ()
+{
+  RUN_ALL()
+}
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/copysign-rv32gcv.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/copysign-rv32gcv.c
new file mode 100644
index 00000000000..ab675aee208
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/copysign-rv32gcv.c
@@ -0,0 +1,8 @@
+/* { dg-do compile } */
+/* { dg-additional-options "-std=c99 -O3 -fno-vect-cost-model -march=rv32gcv_zvfh -mabi=ilp32d --param=riscv-autovec-preference=fixed-vlmax -ffast-math" } */
+
+#include "copysign-template.h"
+
+/* { dg-final { scan-assembler-times {\tvfsgnj\.vv} 6 } } */
+/* { dg-final { scan-assembler-times {\tvfsgnjx\.vv} 6 } } */
+/* { dg-final { scan-assembler-times {\tvfsgnjn\.vv} 6 } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/copysign-rv64gcv.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/copysign-rv64gcv.c
new file mode 100644
index 00000000000..b252ddfe59f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/copysign-rv64gcv.c
@@ -0,0 +1,8 @@
+/* { dg-do compile } */
+/* { dg-additional-options "-std=c99 -O3 -fno-vect-cost-model -march=rv64gcv_zvfh -mabi=lp64d --param=riscv-autovec-preference=fixed-vlmax -ffast-math" } */
+
+#include "copysign-template.h"
+
+/* { dg-final { scan-assembler-times {\tvfsgnj\.vv} 6 } } */
+/* { dg-final { scan-assembler-times {\tvfsgnjx\.vv} 6 } } */
+/* { dg-final { scan-assembler-times {\tvfsgnjn\.vv} 6 } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/copysign-template.h b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/copysign-template.h
new file mode 100644
index 00000000000..df2274fd3ef
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/copysign-template.h
@@ -0,0 +1,78 @@
+#include <stdint-gcc.h>
+
+#define TEST_TYPE(TYPE, SUFFIX)					\
+  __attribute__((noipa))					\
+  void copysign_##TYPE (TYPE *restrict dst, TYPE *restrict a,	\
+			TYPE *restrict b, int n)		\
+  {								\
+    for (int i = 0; i < n; i++)					\
+      dst[i] = __builtin_copysign##SUFFIX (a[i], b[i]);		\
+  }
+
+#define TEST_TYPE2(TYPE, SUFFIX)				\
+  __attribute__((noipa))					\
+  void copysigns_##TYPE (TYPE *restrict dst, TYPE *restrict a,	\
+			 TYPE b, int n)				\
+  {								\
+    for (int i = 0; i < n; i++)					\
+      dst[i] = __builtin_copysign##SUFFIX (a[i], b);		\
+  }
+
+#define TEST_TYPE3(TYPE, SUFFIX)				\
+  __attribute__((noipa))					\
+  void xorsign_##TYPE (TYPE *restrict dst, TYPE *restrict a,	\
+		       TYPE *restrict b, int n)			\
+  {								\
+    for (int i = 0; i < n; i++)					\
+      dst[i] = a[i] * __builtin_copysign##SUFFIX (1.0, b[i]);	\
+  }
+
+#define TEST_TYPE4(TYPE, SUFFIX)				\
+  __attribute__((noipa))					\
+  void xorsigns_##TYPE (TYPE *restrict dst, TYPE *restrict a,	\
+			TYPE b, int n)				\
+  {								\
+    for (int i = 0; i < n; i++)					\
+      dst[i] = a[i] * __builtin_copysign##SUFFIX (1.0, b);	\
+  }
+
+#define TEST_TYPE5(TYPE, SUFFIX)				\
+  __attribute__((noipa))					\
+  void ncopysign_##TYPE (TYPE *restrict dst, TYPE *restrict a,  \
+			 TYPE *restrict b, int n)		\
+  {								\
+    for (int i = 0; i < n; i++)					\
+      dst[i] = -__builtin_copysign##SUFFIX (a[i], b[i]);	\
+  }
+
+#define TEST_TYPE6(TYPE, SUFFIX)				\
+  __attribute__((noipa))					\
+  void ncopysigns_##TYPE (TYPE *restrict dst, TYPE *restrict a, \
+			  TYPE b, int n)			\
+  {								\
+    for (int i = 0; i < n; i++)					\
+      dst[i] = -__builtin_copysign##SUFFIX (a[i], b);		\
+  }
+
+
+#define TEST_ALL()						\
+ TEST_TYPE(_Float16,f16)					\
+ TEST_TYPE(float,f)						\
+ TEST_TYPE(double,)						\
+ TEST_TYPE2(_Float16,f16)					\
+ TEST_TYPE2(float,f)						\
+ TEST_TYPE2(double,)						\
+ TEST_TYPE3(_Float16,f16)					\
+ TEST_TYPE3(float,f)						\
+ TEST_TYPE3(double,)						\
+ TEST_TYPE4(_Float16,f16)					\
+ TEST_TYPE4(float,f)						\
+ TEST_TYPE4(double,)						\
+ TEST_TYPE5(_Float16,f16)					\
+ TEST_TYPE5(float,f)						\
+ TEST_TYPE5(double,)						\
+ TEST_TYPE6(_Float16,f16)					\
+ TEST_TYPE6(float,f)						\
+ TEST_TYPE6(double,)						\
+
+TEST_ALL()
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/copysign-zvfh-run.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/copysign-zvfh-run.c
new file mode 100644
index 00000000000..7aaac9794f0
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/copysign-zvfh-run.c
@@ -0,0 +1,83 @@
+/* { dg-do run { target { riscv_vector && riscv_zvfh_hw } } } */
+/* { dg-additional-options "-std=c99 -fno-vect-cost-model --param=riscv-autovec-preference=fixed-vlmax -ffast-math" } */
+
+#include "copysign-template.h"
+
+#include <assert.h>
+
+#define SZ 512
+
+#define EPS 1e-6
+
+#define RUN(TYPE,VAL)							       \
+  TYPE a##TYPE[SZ];							       \
+  TYPE b##TYPE[SZ];	  						       \
+  for (int i = 0; i < SZ; i++)						       \
+  {                             					       \
+    a##TYPE[i] = i;							       \
+    b##TYPE[i] = (i & 1) ? VAL : -VAL;					       \
+  }                             					       \
+  copysign_##TYPE (a##TYPE, a##TYPE, b##TYPE, SZ);			       \
+  for (int i = 0; i < SZ; i++)						       \
+    assert (__builtin_fabs (a##TYPE[i] - ((i & 1) ? i : -i)) < EPS);	       \
+
+#define RUN2(TYPE,VAL)							       \
+  TYPE a2##TYPE[SZ];							       \
+  for (int i = 0; i < SZ; i++)						       \
+    a2##TYPE[i] = i;							       \
+  copysigns_##TYPE (a2##TYPE, a2##TYPE, -VAL, SZ);			       \
+  for (int i = 0; i < SZ; i++)						       \
+    assert (__builtin_fabs (a2##TYPE[i] + i) < EPS);			       \
+
+#define RUN3(TYPE,VAL)							       \
+  TYPE a3##TYPE[SZ];							       \
+  TYPE b3##TYPE[SZ];	  						       \
+  for (int i = 0; i < SZ; i++)						       \
+  {                             					       \
+    a3##TYPE[i] = (i & 1) ? -i : i;					       \
+    b3##TYPE[i] = (i & 1) ? VAL : -VAL;					       \
+  }                             					       \
+  xorsign_##TYPE (a3##TYPE, a3##TYPE, b3##TYPE, SZ);			       \
+  for (int i = 0; i < SZ; i++)						       \
+    assert (__builtin_fabs (a3##TYPE[i] + i) < EPS);			       \
+
+#define RUN4(TYPE,VAL)							       \
+  TYPE a4##TYPE[SZ];							       \
+  for (int i = 0; i < SZ; i++)						       \
+    a4##TYPE[i] = -i;							       \
+  xorsigns_##TYPE (a4##TYPE, a4##TYPE, -VAL, SZ);			       \
+  for (int i = 0; i < SZ; i++)						       \
+    assert (__builtin_fabs (a4##TYPE[i] - i) < EPS);			       \
+
+#define RUN5(TYPE,VAL)							       \
+  TYPE a5##TYPE[SZ];							       \
+  TYPE b5##TYPE[SZ];	  						       \
+  for (int i = 0; i < SZ; i++)						       \
+  {                             					       \
+    a5##TYPE[i] = i;							       \
+    b5##TYPE[i] = (i & 1) ? VAL : -VAL;					       \
+  }                             					       \
+  ncopysign_##TYPE (a5##TYPE, a5##TYPE, b##TYPE, SZ);			       \
+  for (int i = 0; i < SZ; i++)						       \
+    assert (__builtin_fabs (-a5##TYPE[i] - ((i & 1) ? i : -i)) < EPS);	       \
+
+#define RUN6(TYPE,VAL)							       \
+  TYPE a6##TYPE[SZ];							       \
+  for (int i = 0; i < SZ; i++)						       \
+    a6##TYPE[i] = i;							       \
+  ncopysigns_##TYPE (a6##TYPE, a6##TYPE, -VAL, SZ);			       \
+  for (int i = 0; i < SZ; i++)						       \
+    assert (__builtin_fabs (-a6##TYPE[i] + i) < EPS);			       \
+
+#define RUN_ALL()							       \
+ RUN(_Float16, 5)							       \
+ RUN2(_Float16, 11)							       \
+ RUN3(_Float16, 16)							       \
+ RUN4(_Float16, 17)							       \
+ RUN5(_Float16, 123)							       \
+ RUN6(_Float16, 777)							       \
+
+int main ()
+{
+  RUN_ALL()
+}
-- 
2.40.1


             reply	other threads:[~2023-06-20 12:47 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-06-20 12:47 Robin Dapp [this message]
2023-06-20 22:25 ` 钟居哲
2023-06-21  6:36   ` Robin Dapp
2023-06-21  6:38     ` juzhe.zhong
2023-06-21 12:57       ` [PATCH v2] " Robin Dapp
2023-06-21 14:24         ` 钟居哲
2023-06-24 14:39           ` Jeff Law

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