[AArch64][6/14] ARMv8.2-A FP16 reduction vector intrinsics

gcc/
	* config/aarch64/aarch64-simd-builtins.def (reduc_smax_scal_,
	reduc_smin_scal_): Use VDQIF_F16.
	(reduc_smax_nan_scal_, reduc_smin_nan_scal_): Use VHSDF.
	* config/aarch64/aarch64-simd.md (reduc_<maxmin_uns>_scal_<mode>):
	Use VHSDF.
	(aarch64_reduc_<maxmin_uns>_internal<mode>): Likewise.
	* config/aarch64/iterators.md (VDQIF_F16): New.
	(vp): Support HF modes.
	* config/aarch64/arm_neon.h (vmaxv_f16, vmaxvq_f16, vminv_f16,
	vminvq_f16, vmaxnmv_f16, vmaxnmvq_f16, vminnmv_f16, vminnmvq_f16): New.

From-SVN: r238721

gcc/ChangeLog

@@ -1,3 +1,16 @@
+2016-07-25  Jiong Wang  <jiong.wang@arm.com>
+
+	* config/aarch64/aarch64-simd-builtins.def (reduc_smax_scal_,
+	reduc_smin_scal_): Use VDQIF_F16.
+	(reduc_smax_nan_scal_, reduc_smin_nan_scal_): Use VHSDF.
+	* config/aarch64/aarch64-simd.md (reduc_<maxmin_uns>_scal_<mode>):
+	Use VHSDF.
+	(aarch64_reduc_<maxmin_uns>_internal<mode>): Likewise.
+	* config/aarch64/iterators.md (VDQIF_F16): New.
+	(vp): Support HF modes.
+	* config/aarch64/arm_neon.h (vmaxv_f16, vmaxvq_f16, vminv_f16,
+	vminvq_f16, vmaxnmv_f16, vmaxnmvq_f16, vminnmv_f16, vminnmvq_f16): New.
+
 2016-07-25  Jiong Wang  <jiong.wang@arm.com>
 
 	* config/aarch64/aarch64-simd.md (*aarch64_mulx_elt_to_64v2df): Rename to

gcc/config/aarch64/aarch64-simd-builtins.def

@@ -234,12 +234,12 @@
   BUILTIN_VALL (UNOP, reduc_plus_scal_, 10)
 
   /* Implemented by reduc_<maxmin_uns>_scal_<mode> (producing scalar).  */
-  BUILTIN_VDQIF (UNOP, reduc_smax_scal_, 10)
+  BUILTIN_VDQIF_F16 (UNOP, reduc_smax_scal_, 10)
-  BUILTIN_VDQIF (UNOP, reduc_smin_scal_, 10)
+  BUILTIN_VDQIF_F16 (UNOP, reduc_smin_scal_, 10)
   BUILTIN_VDQ_BHSI (UNOPU, reduc_umax_scal_, 10)
   BUILTIN_VDQ_BHSI (UNOPU, reduc_umin_scal_, 10)
-  BUILTIN_VDQF (UNOP, reduc_smax_nan_scal_, 10)
+  BUILTIN_VHSDF (UNOP, reduc_smax_nan_scal_, 10)
-  BUILTIN_VDQF (UNOP, reduc_smin_nan_scal_, 10)
+  BUILTIN_VHSDF (UNOP, reduc_smin_nan_scal_, 10)
 
   /* Implemented by <maxmin><mode>3.
      smax variants map to fmaxnm,

gcc/config/aarch64/aarch64-simd.md

@@ -2130,8 +2130,8 @@
 ;; gimple_fold'd to the REDUC_(MAX|MIN)_EXPR tree code.  (This is FP smax/smin).
 (define_expand "reduc_<maxmin_uns>_scal_<mode>"
   [(match_operand:<VEL> 0 "register_operand")
-   (unspec:VDQF [(match_operand:VDQF 1 "register_operand")]
+   (unspec:VHSDF [(match_operand:VHSDF 1 "register_operand")]
-		FMAXMINV)]
+		  FMAXMINV)]
   "TARGET_SIMD"
   {
     rtx elt = GEN_INT (ENDIAN_LANE_N (<MODE>mode, 0));
@@ -2178,12 +2178,12 @@
 )
 
 (define_insn "aarch64_reduc_<maxmin_uns>_internal<mode>"
- [(set (match_operand:VDQF 0 "register_operand" "=w")
+ [(set (match_operand:VHSDF 0 "register_operand" "=w")
-       (unspec:VDQF [(match_operand:VDQF 1 "register_operand" "w")]
+       (unspec:VHSDF [(match_operand:VHSDF 1 "register_operand" "w")]
-		    FMAXMINV))]
+		      FMAXMINV))]
  "TARGET_SIMD"
  "<maxmin_uns_op><vp>\\t%<Vetype>0, %1.<Vtype>"
-  [(set_attr "type" "neon_fp_reduc_minmax_<Vetype><q>")]
+  [(set_attr "type" "neon_fp_reduc_minmax_<stype><q>")]
 )
 
 ;; aarch64_simd_bsl may compile to any of bsl/bif/bit depending on register

gcc/config/aarch64/arm_neon.h

@@ -26927,6 +26927,56 @@ vmulxq_n_f16 (float16x8_t __a, float16_t __b)
   return vmulxq_f16 (__a, vdupq_n_f16 (__b));
 }
 
+/* ARMv8.2-A FP16 reduction vector intrinsics.  */
+
+__extension__ static __inline float16_t __attribute__ ((__always_inline__))
+vmaxv_f16 (float16x4_t __a)
+{
+  return __builtin_aarch64_reduc_smax_nan_scal_v4hf (__a);
+}
+
+__extension__ static __inline float16_t __attribute__ ((__always_inline__))
+vmaxvq_f16 (float16x8_t __a)
+{
+  return __builtin_aarch64_reduc_smax_nan_scal_v8hf (__a);
+}
+
+__extension__ static __inline float16_t __attribute__ ((__always_inline__))
+vminv_f16 (float16x4_t __a)
+{
+  return __builtin_aarch64_reduc_smin_nan_scal_v4hf (__a);
+}
+
+__extension__ static __inline float16_t __attribute__ ((__always_inline__))
+vminvq_f16 (float16x8_t __a)
+{
+  return __builtin_aarch64_reduc_smin_nan_scal_v8hf (__a);
+}
+
+__extension__ static __inline float16_t __attribute__ ((__always_inline__))
+vmaxnmv_f16 (float16x4_t __a)
+{
+  return __builtin_aarch64_reduc_smax_scal_v4hf (__a);
+}
+
+__extension__ static __inline float16_t __attribute__ ((__always_inline__))
+vmaxnmvq_f16 (float16x8_t __a)
+{
+  return __builtin_aarch64_reduc_smax_scal_v8hf (__a);
+}
+
+__extension__ static __inline float16_t __attribute__ ((__always_inline__))
+vminnmv_f16 (float16x4_t __a)
+{
+  return __builtin_aarch64_reduc_smin_scal_v4hf (__a);
+}
+
+__extension__ static __inline float16_t __attribute__ ((__always_inline__))
+vminnmvq_f16 (float16x8_t __a)
+{
+  return __builtin_aarch64_reduc_smin_scal_v8hf (__a);
+}
+
 #pragma GCC pop_options
 
 #undef __aarch64_vget_lane_any

gcc/config/aarch64/iterators.md

@@ -159,6 +159,8 @@
 
 ;; Vector modes except double int.
 (define_mode_iterator VDQIF [V8QI V16QI V4HI V8HI V2SI V4SI V2SF V4SF V2DF])
+(define_mode_iterator VDQIF_F16 [V8QI V16QI V4HI V8HI V2SI V4SI
+                                 V4HF V8HF V2SF V4SF V2DF])
 
 ;; Vector modes for S type.
 (define_mode_iterator VDQ_SI [V2SI V4SI])
@@ -760,8 +762,9 @@
 (define_mode_attr vp [(V8QI "v") (V16QI "v")
 		      (V4HI "v") (V8HI  "v")
 		      (V2SI "p") (V4SI  "v")
-		      (V2DI  "p") (V2DF  "p")
+		      (V2DI "p") (V2DF  "p")
-		      (V2SF "p") (V4SF  "v")])
+		      (V2SF "p") (V4SF  "v")
+		      (V4HF "v") (V8HF  "v")])
 
 (define_mode_attr vsi2qi [(V2SI "v8qi") (V4SI "v16qi")])
 (define_mode_attr VSI2QI [(V2SI "V8QI") (V4SI "V16QI")])