From: "H.J. Lu" <hjl.to...@gmail.com>

1. FP16 vector xor/ior/and/andnot/abs/neg
2. FP16 scalar abs/neg/copysign/xorsign

gcc/ChangeLog:

        * config/i386/i386-expand.c (ix86_expand_fp_absneg_operator):
        Handle HFmode.
        (ix86_expand_copysign): Ditto.
        (ix86_expand_xorsign): Ditto.
        * config/i386/i386.c (ix86_build_const_vector): Handle HF vector
        modes.
        (ix86_build_signbit_mask): Ditto.
        (ix86_can_change_mode_class): Ditto.
        * config/i386/i386.md (SSEMODEF): Add HF mode.
        (ssevecmodef): Ditto.
        (<code><mode>2): Use MODEFH.
        (*<code><mode>2_1): Ditto.
        (define_split): Ditto.
        (xorsign<mode>3): Ditto.
        (@xorsign<mode>3_1): Ditto.
        * config/i386/sse.md (VFB): New mode iterator.
        (VFB_128_256): Ditto.
        (VFB_512): Ditto.
        (sseintvecmode2): Support HF vector mode.
        (<code><mode>2): Use new mode iterator.
        (*<code><mode>2): Ditto.
        (copysign<mode>3): Ditto.
        (xorsign<mode>3): Ditto.
        (<code><mode>3<mask_name>): Ditto.
        (<code><mode>3<mask_name>): Ditto.
        (<sse>_andnot<mode>3<mask_name>): Adjust for HF vector mode.
        (<sse>_andnot<mode>3<mask_name>): Ditto.
        (*<code><mode>3<mask_name>): Ditto.
        (*<code><mode>3<mask_name>): Ditto.
---
 gcc/config/i386/i386-expand.c |  12 +++-
 gcc/config/i386/i386.c        |  12 +++-
 gcc/config/i386/i386.md       |  40 ++++++-----
 gcc/config/i386/sse.md        | 128 ++++++++++++++++++++--------------
 4 files changed, 118 insertions(+), 74 deletions(-)

diff --git a/gcc/config/i386/i386-expand.c b/gcc/config/i386/i386-expand.c
index 9233c6cd1e8..006f4bec8db 100644
--- a/gcc/config/i386/i386-expand.c
+++ b/gcc/config/i386/i386-expand.c
@@ -1781,6 +1781,8 @@ ix86_expand_fp_absneg_operator (enum rtx_code code, 
machine_mode mode,
        vmode = V4SFmode;
       else if (mode == DFmode)
        vmode = V2DFmode;
+      else if (mode == HFmode)
+       vmode = V8HFmode;
     }
 
   dst = operands[0];
@@ -1918,7 +1920,9 @@ ix86_expand_copysign (rtx operands[])
 
   mode = GET_MODE (dest);
 
-  if (mode == SFmode)
+  if (mode == HFmode)
+    vmode = V8HFmode;
+  else if (mode == SFmode)
     vmode = V4SFmode;
   else if (mode == DFmode)
     vmode = V2DFmode;
@@ -1934,7 +1938,7 @@ ix86_expand_copysign (rtx operands[])
       if (real_isneg (CONST_DOUBLE_REAL_VALUE (op0)))
        op0 = simplify_unary_operation (ABS, mode, op0, mode);
 
-      if (mode == SFmode || mode == DFmode)
+      if (mode == HFmode || mode == SFmode || mode == DFmode)
        {
          if (op0 == CONST0_RTX (mode))
            op0 = CONST0_RTX (vmode);
@@ -2073,7 +2077,9 @@ ix86_expand_xorsign (rtx operands[])
 
   mode = GET_MODE (dest);
 
-  if (mode == SFmode)
+  if (mode == HFmode)
+    vmode = V8HFmode;
+  else if (mode == SFmode)
     vmode = V4SFmode;
   else if (mode == DFmode)
     vmode = V2DFmode;
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index dc0d440061b..17e1b5ea874 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -15374,6 +15374,9 @@ ix86_build_const_vector (machine_mode mode, bool vect, 
rtx value)
     case E_V2DImode:
       gcc_assert (vect);
       /* FALLTHRU */
+    case E_V8HFmode:
+    case E_V16HFmode:
+    case E_V32HFmode:
     case E_V16SFmode:
     case E_V8SFmode:
     case E_V4SFmode:
@@ -15412,6 +15415,13 @@ ix86_build_signbit_mask (machine_mode mode, bool vect, 
bool invert)
 
   switch (mode)
     {
+    case E_V8HFmode:
+    case E_V16HFmode:
+    case E_V32HFmode:
+      vec_mode = mode;
+      imode = HImode;
+      break;
+
     case E_V16SImode:
     case E_V16SFmode:
     case E_V8SImode:
@@ -19198,7 +19208,7 @@ ix86_can_change_mode_class (machine_mode from, 
machine_mode to,
         disallow a change to these modes, reload will assume it's ok to
         drop the subreg from (subreg:SI (reg:HI 100) 0).  This affects
         the vec_dupv4hi pattern.  */
-      if (GET_MODE_SIZE (from) < 4)
+      if (GET_MODE_SIZE (from) < 4 && from != E_HFmode)
        return false;
     }
 
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 014aba187e1..a85c23d74f1 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -1233,9 +1233,10 @@ (define_mode_iterator MODEFH [(HF "TARGET_AVX512FP16") 
SF DF])
 ;; All x87 floating point modes plus HFmode
 (define_mode_iterator X87MODEFH [HF SF DF XF])
 
-;; All SSE floating point modes
-(define_mode_iterator SSEMODEF [SF DF TF])
-(define_mode_attr ssevecmodef [(SF "V4SF") (DF "V2DF") (TF "TF")])
+;; All SSE floating point modes and HFmode
+(define_mode_iterator SSEMODEF [HF SF DF TF])
+(define_mode_attr ssevecmodef [(HF "V8HF") (SF "V4SF") (DF "V2DF") (TF "TF")])
+
 
 ;; SSE instruction suffix for various modes
 (define_mode_attr ssemodesuffix
@@ -10529,8 +10530,8 @@ (define_insn_and_split "*nabstf2_1"
   [(set_attr "isa" "noavx,noavx,avx,avx")])
 
 (define_expand "<code><mode>2"
-  [(set (match_operand:X87MODEF 0 "register_operand")
-       (absneg:X87MODEF (match_operand:X87MODEF 1 "register_operand")))]
+  [(set (match_operand:X87MODEFH 0 "register_operand")
+       (absneg:X87MODEFH (match_operand:X87MODEFH 1 "register_operand")))]
   "TARGET_80387 || (SSE_FLOAT_MODE_P (<MODE>mode) && TARGET_SSE_MATH)"
   "ix86_expand_fp_absneg_operator (<CODE>, <MODE>mode, operands); DONE;")
 
@@ -10559,9 +10560,9 @@ (define_split
   "ix86_split_fp_absneg_operator (<CODE>, <MODE>mode, operands); DONE;")
 
 (define_insn "*<code><mode>2_1"
-  [(set (match_operand:MODEF 0 "register_operand" "=x,x,Yv,f,!r")
-       (absneg:MODEF
-         (match_operand:MODEF 1 "register_operand" "0,x,Yv,0,0")))
+  [(set (match_operand:MODEFH 0 "register_operand" "=x,x,Yv,f,!r")
+       (absneg:MODEFH
+         (match_operand:MODEFH 1 "register_operand" "0,x,Yv,0,0")))
    (use (match_operand:<ssevecmode> 2 "vector_operand" "xBm,0,Yvm,X,X"))
    (clobber (reg:CC FLAGS_REG))]
   "TARGET_80387 || (SSE_FLOAT_MODE_P (<MODE>mode) && TARGET_SSE_MATH)"
@@ -10572,7 +10573,8 @@ (define_insn "*<code><mode>2_1"
        (match_test ("SSE_FLOAT_MODE_P (<MODE>mode) && TARGET_SSE_MATH"))
        (if_then_else
         (eq_attr "alternative" "3,4")
-        (symbol_ref "TARGET_MIX_SSE_I387")
+        (symbol_ref "TARGET_MIX_SSE_I387
+                     && <MODE>mode != HFmode")
         (const_string "*"))
        (if_then_else
         (eq_attr "alternative" "3,4")
@@ -10580,9 +10582,9 @@ (define_insn "*<code><mode>2_1"
         (symbol_ref "false"))))])
 
 (define_split
-  [(set (match_operand:MODEF 0 "sse_reg_operand")
-       (absneg:MODEF
-         (match_operand:MODEF 1 "sse_reg_operand")))
+  [(set (match_operand:MODEFH 0 "sse_reg_operand")
+       (absneg:MODEFH
+         (match_operand:MODEFH 1 "sse_reg_operand")))
    (use (match_operand:<ssevecmodef> 2 "vector_operand"))
    (clobber (reg:CC FLAGS_REG))]
   "SSE_FLOAT_MODE_P (<MODE>mode) && TARGET_SSE_MATH
@@ -10706,17 +10708,17 @@ (define_split
   "ix86_split_copysign_var (operands); DONE;")
 
 (define_expand "xorsign<mode>3"
-  [(match_operand:MODEF 0 "register_operand")
-   (match_operand:MODEF 1 "register_operand")
-   (match_operand:MODEF 2 "register_operand")]
+  [(match_operand:MODEFH 0 "register_operand")
+   (match_operand:MODEFH 1 "register_operand")
+   (match_operand:MODEFH 2 "register_operand")]
   "SSE_FLOAT_MODE_P (<MODE>mode) && TARGET_SSE_MATH"
   "ix86_expand_xorsign (operands); DONE;")
 
 (define_insn_and_split "@xorsign<mode>3_1"
-  [(set (match_operand:MODEF 0 "register_operand" "=Yv")
-       (unspec:MODEF
-         [(match_operand:MODEF 1 "register_operand" "Yv")
-          (match_operand:MODEF 2 "register_operand" "0")
+  [(set (match_operand:MODEFH 0 "register_operand" "=Yv")
+       (unspec:MODEFH
+         [(match_operand:MODEFH 1 "register_operand" "Yv")
+          (match_operand:MODEFH 2 "register_operand" "0")
           (match_operand:<ssevecmode> 3 "nonimmediate_operand" "Yvm")]
          UNSPEC_XORSIGN))]
   "SSE_FLOAT_MODE_P (<MODE>mode) && TARGET_SSE_MATH"
diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
index fdcc0515228..7c594babcce 100644
--- a/gcc/config/i386/sse.md
+++ b/gcc/config/i386/sse.md
@@ -317,11 +317,26 @@ (define_mode_iterator VFH
    (V16SF "TARGET_AVX512F") (V8SF "TARGET_AVX") V4SF
    (V8DF "TARGET_AVX512F") (V4DF "TARGET_AVX") (V2DF "TARGET_SSE2")])
 
+;; 128-, 256- and 512-bit float vector modes for bitwise operations
+(define_mode_iterator VFB
+  [(V32HF "TARGET_AVX512FP16")
+   (V16HF "TARGET_AVX512FP16")
+   (V8HF "TARGET_AVX512FP16")
+   (V16SF "TARGET_AVX512F") (V8SF "TARGET_AVX") V4SF
+   (V8DF "TARGET_AVX512F") (V4DF "TARGET_AVX") (V2DF "TARGET_SSE2")])
+
 ;; 128- and 256-bit float vector modes
 (define_mode_iterator VF_128_256
   [(V8SF "TARGET_AVX") V4SF
    (V4DF "TARGET_AVX") (V2DF "TARGET_SSE2")])
 
+;; 128- and 256-bit float vector modes for bitwise operations
+(define_mode_iterator VFB_128_256
+  [(V16HF "TARGET_AVX512FP16")
+   (V8HF "TARGET_AVX512FP16")
+   (V8SF "TARGET_AVX") V4SF
+   (V4DF "TARGET_AVX") (V2DF "TARGET_SSE2")])
+
 ;; All SFmode vector float modes
 (define_mode_iterator VF1
   [(V16SF "TARGET_AVX512F") (V8SF "TARGET_AVX") V4SF])
@@ -374,6 +389,10 @@ (define_mode_iterator VF_256
 (define_mode_iterator VF_512
   [V16SF V8DF])
 
+;; All 512bit vector float modes for bitwise operations
+(define_mode_iterator VFB_512
+  [(V32HF "TARGET_AVX512FP16") V16SF V8DF])
+
 (define_mode_iterator VI48_AVX512VL
   [V16SI (V8SI  "TARGET_AVX512VL") (V4SI  "TARGET_AVX512VL")
    V8DI  (V4DI  "TARGET_AVX512VL") (V2DI  "TARGET_AVX512VL")])
@@ -923,7 +942,8 @@ (define_mode_attr sseintvecmode
 
 (define_mode_attr sseintvecmode2
   [(V8DF "XI") (V4DF "OI") (V2DF "TI")
-   (V8SF "OI") (V4SF "TI")])
+   (V8SF "OI") (V4SF "TI")
+   (V16HF "OI") (V8HF "TI")])
 
 (define_mode_attr sseintvecmodelower
   [(V16SF "v16si") (V8DF "v8di")
@@ -1968,22 +1988,22 @@ (define_insn "kunpckdi"
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
 (define_expand "<code><mode>2"
-  [(set (match_operand:VF 0 "register_operand")
-       (absneg:VF
-         (match_operand:VF 1 "register_operand")))]
+  [(set (match_operand:VFB 0 "register_operand")
+       (absneg:VFB
+         (match_operand:VFB 1 "register_operand")))]
   "TARGET_SSE"
   "ix86_expand_fp_absneg_operator (<CODE>, <MODE>mode, operands); DONE;")
 
 (define_insn_and_split "*<code><mode>2"
-  [(set (match_operand:VF 0 "register_operand" "=x,x,v,v")
-       (absneg:VF
-         (match_operand:VF 1 "vector_operand" "0,xBm,v,m")))
-   (use (match_operand:VF 2 "vector_operand" "xBm,0,vm,v"))]
+  [(set (match_operand:VFB 0 "register_operand" "=x,x,v,v")
+       (absneg:VFB
+         (match_operand:VFB 1 "vector_operand" "0,xBm,v,m")))
+   (use (match_operand:VFB 2 "vector_operand" "xBm,0,vm,v"))]
   "TARGET_SSE"
   "#"
   "&& reload_completed"
   [(set (match_dup 0)
-       (<absneg_op>:VF (match_dup 1) (match_dup 2)))]
+       (<absneg_op>:VFB (match_dup 1) (match_dup 2)))]
 {
   if (TARGET_AVX)
     {
@@ -3893,11 +3913,11 @@ (define_expand "vcond_mask_<mode><sseintvecmodelower>"
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
 (define_insn "<sse>_andnot<mode>3<mask_name>"
-  [(set (match_operand:VF_128_256 0 "register_operand" "=x,x,v,v")
-       (and:VF_128_256
-         (not:VF_128_256
-           (match_operand:VF_128_256 1 "register_operand" "0,x,v,v"))
-         (match_operand:VF_128_256 2 "vector_operand" "xBm,xm,vm,vm")))]
+  [(set (match_operand:VFB_128_256 0 "register_operand" "=x,x,v,v")
+       (and:VFB_128_256
+         (not:VFB_128_256
+           (match_operand:VFB_128_256 1 "register_operand" "0,x,v,v"))
+         (match_operand:VFB_128_256 2 "vector_operand" "xBm,xm,vm,vm")))]
   "TARGET_SSE && <mask_avx512vl_condition>"
 {
   char buf[128];
@@ -3920,6 +3940,8 @@ (define_insn "<sse>_andnot<mode>3<mask_name>"
 
   switch (get_attr_mode (insn))
     {
+    case MODE_V16HF:
+    case MODE_V8HF:
     case MODE_V8SF:
     case MODE_V4SF:
       suffix = "ps";
@@ -3958,11 +3980,11 @@ (define_insn "<sse>_andnot<mode>3<mask_name>"
              (const_string "<MODE>")))])
 
 (define_insn "<sse>_andnot<mode>3<mask_name>"
-  [(set (match_operand:VF_512 0 "register_operand" "=v")
-       (and:VF_512
-         (not:VF_512
-           (match_operand:VF_512 1 "register_operand" "v"))
-         (match_operand:VF_512 2 "nonimmediate_operand" "vm")))]
+  [(set (match_operand:VFB_512 0 "register_operand" "=v")
+       (and:VFB_512
+         (not:VFB_512
+           (match_operand:VFB_512 1 "register_operand" "v"))
+         (match_operand:VFB_512 2 "nonimmediate_operand" "vm")))]
   "TARGET_AVX512F"
 {
   char buf[128];
@@ -3972,8 +3994,9 @@ (define_insn "<sse>_andnot<mode>3<mask_name>"
   suffix = "<ssemodesuffix>";
   ops = "";
 
-  /* There is no vandnp[sd] in avx512f.  Use vpandn[qd].  */
-  if (!TARGET_AVX512DQ)
+  /* Since there are no vandnp[sd] without AVX512DQ nor vandnph,
+     use vp<logic>[dq].  */
+  if (!TARGET_AVX512DQ || <MODE>mode == V32HFmode)
     {
       suffix = GET_MODE_INNER (<MODE>mode) == DFmode ? "q" : "d";
       ops = "p";
@@ -3993,26 +4016,26 @@ (define_insn "<sse>_andnot<mode>3<mask_name>"
                      (const_string "XI")))])
 
 (define_expand "<code><mode>3<mask_name>"
-  [(set (match_operand:VF_128_256 0 "register_operand")
-       (any_logic:VF_128_256
-         (match_operand:VF_128_256 1 "vector_operand")
-         (match_operand:VF_128_256 2 "vector_operand")))]
+  [(set (match_operand:VFB_128_256 0 "register_operand")
+       (any_logic:VFB_128_256
+         (match_operand:VFB_128_256 1 "vector_operand")
+         (match_operand:VFB_128_256 2 "vector_operand")))]
   "TARGET_SSE && <mask_avx512vl_condition>"
   "ix86_fixup_binary_operands_no_copy (<CODE>, <MODE>mode, operands);")
 
 (define_expand "<code><mode>3<mask_name>"
-  [(set (match_operand:VF_512 0 "register_operand")
-       (any_logic:VF_512
-         (match_operand:VF_512 1 "nonimmediate_operand")
-         (match_operand:VF_512 2 "nonimmediate_operand")))]
+  [(set (match_operand:VFB_512 0 "register_operand")
+       (any_logic:VFB_512
+         (match_operand:VFB_512 1 "nonimmediate_operand")
+         (match_operand:VFB_512 2 "nonimmediate_operand")))]
   "TARGET_AVX512F"
   "ix86_fixup_binary_operands_no_copy (<CODE>, <MODE>mode, operands);")
 
 (define_insn "*<code><mode>3<mask_name>"
-  [(set (match_operand:VF_128_256 0 "register_operand" "=x,x,v,v")
-       (any_logic:VF_128_256
-         (match_operand:VF_128_256 1 "vector_operand" "%0,x,v,v")
-         (match_operand:VF_128_256 2 "vector_operand" "xBm,xm,vm,vm")))]
+  [(set (match_operand:VFB_128_256 0 "register_operand" "=x,x,v,v")
+       (any_logic:VFB_128_256
+         (match_operand:VFB_128_256 1 "vector_operand" "%0,x,v,v")
+         (match_operand:VFB_128_256 2 "vector_operand" "xBm,xm,vm,vm")))]
   "TARGET_SSE && <mask_avx512vl_condition>
    && !(MEM_P (operands[1]) && MEM_P (operands[2]))"
 {
@@ -4036,6 +4059,8 @@ (define_insn "*<code><mode>3<mask_name>"
 
   switch (get_attr_mode (insn))
     {
+    case MODE_V16HF:
+    case MODE_V8HF:
     case MODE_V8SF:
     case MODE_V4SF:
       suffix = "ps";
@@ -4074,10 +4099,10 @@ (define_insn "*<code><mode>3<mask_name>"
              (const_string "<MODE>")))])
 
 (define_insn "*<code><mode>3<mask_name>"
-  [(set (match_operand:VF_512 0 "register_operand" "=v")
-       (any_logic:VF_512
-         (match_operand:VF_512 1 "nonimmediate_operand" "%v")
-         (match_operand:VF_512 2 "nonimmediate_operand" "vm")))]
+  [(set (match_operand:VFB_512 0 "register_operand" "=v")
+       (any_logic:VFB_512
+         (match_operand:VFB_512 1 "nonimmediate_operand" "%v")
+         (match_operand:VFB_512 2 "nonimmediate_operand" "vm")))]
   "TARGET_AVX512F && !(MEM_P (operands[1]) && MEM_P (operands[2]))"
 {
   char buf[128];
@@ -4087,8 +4112,9 @@ (define_insn "*<code><mode>3<mask_name>"
   suffix = "<ssemodesuffix>";
   ops = "";
 
-  /* There is no v<logic>p[sd] in avx512f.  Use vp<logic>[dq].  */
-  if (!TARGET_AVX512DQ)
+  /* Since there are no v<logic>p[sd] without AVX512DQ nor v<logic>ph,
+     use vp<logic>[dq].  */
+  if (!TARGET_AVX512DQ || <MODE>mode == V32HFmode)
     {
       suffix = GET_MODE_INNER (<MODE>mode) == DFmode ? "q" : "d";
       ops = "p";
@@ -4109,14 +4135,14 @@ (define_insn "*<code><mode>3<mask_name>"
 
 (define_expand "copysign<mode>3"
   [(set (match_dup 4)
-       (and:VF
-         (not:VF (match_dup 3))
-         (match_operand:VF 1 "vector_operand")))
+       (and:VFB
+         (not:VFB (match_dup 3))
+         (match_operand:VFB 1 "vector_operand")))
    (set (match_dup 5)
-       (and:VF (match_dup 3)
-               (match_operand:VF 2 "vector_operand")))
-   (set (match_operand:VF 0 "register_operand")
-       (ior:VF (match_dup 4) (match_dup 5)))]
+       (and:VFB (match_dup 3)
+                (match_operand:VFB 2 "vector_operand")))
+   (set (match_operand:VFB 0 "register_operand")
+       (ior:VFB (match_dup 4) (match_dup 5)))]
   "TARGET_SSE"
 {
   operands[3] = ix86_build_signbit_mask (<MODE>mode, 1, 0);
@@ -4127,11 +4153,11 @@ (define_expand "copysign<mode>3"
 
 (define_expand "xorsign<mode>3"
   [(set (match_dup 4)
-       (and:VF (match_dup 3)
-               (match_operand:VF 2 "vector_operand")))
-   (set (match_operand:VF 0 "register_operand")
-       (xor:VF (match_dup 4)
-               (match_operand:VF 1 "vector_operand")))]
+       (and:VFB (match_dup 3)
+               (match_operand:VFB 2 "vector_operand")))
+   (set (match_operand:VFB 0 "register_operand")
+       (xor:VFB (match_dup 4)
+                (match_operand:VFB 1 "vector_operand")))]
   "TARGET_SSE"
 {
   operands[3] = ix86_build_signbit_mask (<MODE>mode, 1, 0);
-- 
2.18.1

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