From 338abd0bf777f671f4bf48d8ee5fe1f67f3ea3d9 Mon Sep 17 00:00:00 2001
From: liuhongt <hongtao.liu@intel.com>
Date: Mon, 13 Jul 2020 14:19:21 +0800
Subject: AVX512FP16: Add expander for ceil/floor/trunc/roundeven.

gcc/ChangeLog:

	* config/i386/i386.md (<rounding_insn>hf2): New expander.
	(sse4_1_round<mode>2): Extend from MODEF to MODEFH.
	* config/i386/sse.md (*sse4_1_round<ssescalarmodesuffix>):
	Extend from VF_128 to VFH_128.

gcc/testsuite/ChangeLog:

	* gcc.target/i386/avx512fp16-builtin-round-1.c: New test.
---
 gcc/config/i386/i386.md                            | 18 ++++++++++---
 gcc/config/i386/sse.md                             |  8 +++---
 .../gcc.target/i386/avx512fp16-builtin-round-1.c   | 31 ++++++++++++++++++++++
 3 files changed, 50 insertions(+), 7 deletions(-)
 create mode 100644 gcc/testsuite/gcc.target/i386/avx512fp16-builtin-round-1.c

diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index ae1a81c..0b17414 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -18233,9 +18233,9 @@
 
 
 (define_insn "sse4_1_round<mode>2"
-  [(set (match_operand:MODEF 0 "register_operand" "=x,x,x,v,v")
-	(unspec:MODEF
-	  [(match_operand:MODEF 1 "nonimmediate_operand" "0,x,m,v,m")
+  [(set (match_operand:MODEFH 0 "register_operand" "=x,x,x,v,v")
+	(unspec:MODEFH
+	  [(match_operand:MODEFH 1 "nonimmediate_operand" "0,x,m,v,m")
 	   (match_operand:SI 2 "const_0_to_15_operand" "n,n,n,n,n")]
 	  UNSPEC_ROUND))]
   "TARGET_SSE4_1"
@@ -18492,6 +18492,18 @@
   "TARGET_USE_FANCY_MATH_387
    && (flag_fp_int_builtin_inexact || !flag_trapping_math)")
 
+(define_expand "<rounding_insn>hf2"
+  [(parallel [(set (match_operand:HF 0 "register_operand")
+		   (unspec:HF [(match_operand:HF 1 "register_operand")]
+		     FRNDINT_ROUNDING))
+	      (clobber (reg:CC FLAGS_REG))])]
+  "TARGET_AVX512FP16"
+{
+  emit_insn (gen_sse4_1_roundhf2 (operands[0], operands[1],
+				  GEN_INT (ROUND_<ROUNDING> | ROUND_NO_EXC)));
+  DONE;
+})
+
 (define_expand "<rounding_insn><mode>2"
   [(parallel [(set (match_operand:MODEF 0 "register_operand")
 		   (unspec:MODEF [(match_operand:MODEF 1 "register_operand")]
diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
index e8aef0d..9079613 100644
--- a/gcc/config/i386/sse.md
+++ b/gcc/config/i386/sse.md
@@ -21472,14 +21472,14 @@
    (set_attr "mode" "<MODE>")])
 
 (define_insn "*sse4_1_round<ssescalarmodesuffix>"
-  [(set (match_operand:VF_128 0 "register_operand" "=Yr,*x,x,v")
-	(vec_merge:VF_128
-	  (vec_duplicate:VF_128
+  [(set (match_operand:VFH_128 0 "register_operand" "=Yr,*x,x,v")
+	(vec_merge:VFH_128
+	  (vec_duplicate:VFH_128
 	    (unspec:<ssescalarmode>
 	      [(match_operand:<ssescalarmode> 2 "nonimmediate_operand" "Yrm,*xm,xm,vm")
 	       (match_operand:SI 3 "const_0_to_15_operand" "n,n,n,n")]
 	      UNSPEC_ROUND))
-	  (match_operand:VF_128 1 "register_operand" "0,0,x,v")
+	  (match_operand:VFH_128 1 "register_operand" "0,0,x,v")
 	  (const_int 1)))]
   "TARGET_SSE4_1"
   "@
diff --git a/gcc/testsuite/gcc.target/i386/avx512fp16-builtin-round-1.c b/gcc/testsuite/gcc.target/i386/avx512fp16-builtin-round-1.c
new file mode 100644
index 0000000..3cab152
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/avx512fp16-builtin-round-1.c
@@ -0,0 +1,31 @@
+/* { dg-do compile } */
+/* { dg-options "-Ofast -mavx512fp16" } */
+
+_Float16
+f1 (_Float16 x)
+{
+  return __builtin_truncf16 (x);
+}
+
+_Float16
+f2 (_Float16 x)
+{
+  return __builtin_floorf16 (x);
+}
+
+_Float16
+f3 (_Float16 x)
+{
+  return __builtin_ceilf16 (x);
+}
+
+_Float16
+f4 (_Float16 x)
+{
+  return __builtin_roundevenf16 (x);
+}
+
+/* { dg-final { scan-assembler-times "vrndscalesh\[ \\t\]+\\\$11\[^\n\r\]*xmm\[0-9\]" 1 } } */
+/* { dg-final { scan-assembler-times "vrndscalesh\[ \\t\]+\\\$10\[^\n\r\]*xmm\[0-9\]" 1 } } */
+/* { dg-final { scan-assembler-times "vrndscalesh\[ \\t\]+\\\$9\[^\n\r\]*xmm\[0-9\]" 1 } } */
+/* { dg-final { scan-assembler-times "vrndscalesh\[ \\t\]+\\\$8\[^\n\r\]*xmm\[0-9\]" 1 } } */
-- 
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