Disable zmm register and 512 bit libmvec call when !TARGET_EVEX512

gcc/ChangeLog:

	* config/i386/i386-expand.cc (ix86_broadcast_from_constant):
	Disable zmm broadcast for !TARGET_EVEX512.
	* config/i386/i386-options.cc (ix86_option_override_internal):
	Do not use PVW_512 when no-evex512.
	(ix86_simd_clone_adjust): Add evex512 target into string.
	* config/i386/i386.cc (type_natural_mode): Report ABI warning
	when using zmm register w/o evex512.
	(ix86_return_in_memory): Do not allow zmm when !TARGET_EVEX512.
	(ix86_hard_regno_mode_ok): Ditto.
	(ix86_set_reg_reg_cost): Ditto.
	(ix86_rtx_costs): Ditto.
	(ix86_vector_mode_supported_p): Ditto.
	(ix86_preferred_simd_mode): Ditto.
	(ix86_get_mask_mode): Ditto.
	(ix86_simd_clone_compute_vecsize_and_simdlen): Disable 512 bit
	libmvec call when !TARGET_EVEX512.
	(ix86_simd_clone_usable): Ditto.
	* config/i386/i386.h (BIGGEST_ALIGNMENT): Disable 512 alignment
	when !TARGET_EVEX512
	(MOVE_MAX): Do not use PVW_512 when !TARGET_EVEX512.
	(STORE_MAX_PIECES): Ditto.

diff --git a/gcc/config/i386/i386-expand.cc b/gcc/config/i386/i386-expand.cc
index 425f353186208d3a5431c8e1ca0e7b60ee249fe9..6e5bc3d30c89f17aff3271379a1871d0417a35c5 100644 (file)
--- a/gcc/config/i386/i386-expand.cc
+++ b/gcc/config/i386/i386-expand.cc
@@ -611,6 +611,7 @@ ix86_broadcast_from_constant (machine_mode mode, rtx op)
      avx512 embed broadcast is available.  */
   if (GET_MODE_INNER (mode) == DImode && !TARGET_64BIT
       && (!TARGET_AVX512F
+         || (GET_MODE_SIZE (mode) == 64 && !TARGET_EVEX512)
          || (GET_MODE_SIZE (mode) < 64 && !TARGET_AVX512VL)))
     return nullptr;
 

diff --git a/gcc/config/i386/i386-options.cc b/gcc/config/i386/i386-options.cc
index 3398151b8e448f05c2e5b8529bf2b51887812613..06af373ca57ae1a610f404bdad1adc4a3e0ad489 100644 (file)
--- a/gcc/config/i386/i386-options.cc
+++ b/gcc/config/i386/i386-options.cc
@@ -2863,7 +2863,8 @@ ix86_option_override_internal (bool main_args_p,
          opts->x_ix86_move_max = opts->x_prefer_vector_width_type;
          if (opts_set->x_ix86_move_max == PVW_NONE)
            {
-             if (TARGET_AVX512F_P (opts->x_ix86_isa_flags))
+             if (TARGET_AVX512F_P (opts->x_ix86_isa_flags)
+                 && TARGET_EVEX512_P (opts->x_ix86_isa_flags2))
                opts->x_ix86_move_max = PVW_AVX512;
              else
                opts->x_ix86_move_max = PVW_AVX128;
@@ -2884,7 +2885,8 @@ ix86_option_override_internal (bool main_args_p,
          opts->x_ix86_store_max = opts->x_prefer_vector_width_type;
          if (opts_set->x_ix86_store_max == PVW_NONE)
            {
-             if (TARGET_AVX512F_P (opts->x_ix86_isa_flags))
+             if (TARGET_AVX512F_P (opts->x_ix86_isa_flags)
+                 && TARGET_EVEX512_P (opts->x_ix86_isa_flags2))
                opts->x_ix86_store_max = PVW_AVX512;
              else
                opts->x_ix86_store_max = PVW_AVX128;
@@ -3163,13 +3165,13 @@ ix86_simd_clone_adjust (struct cgraph_node *node)
     case 'e':
       if (TARGET_PREFER_AVX256)
        {
-         if (!TARGET_AVX512F)
-           str = "avx512f,prefer-vector-width=512";
+         if (!TARGET_AVX512F || !TARGET_EVEX512)
+           str = "avx512f,evex512,prefer-vector-width=512";
          else
            str = "prefer-vector-width=512";
        }
-      else if (!TARGET_AVX512F)
-       str = "avx512f";
+      else if (!TARGET_AVX512F || !TARGET_EVEX512)
+       str = "avx512f,evex512";
       break;
     default:
       gcc_unreachable ();

diff --git a/gcc/config/i386/i386.cc b/gcc/config/i386/i386.cc
index 5dbfd1774be8a08fefbdcbbce71282d1c4b1efd4..f28684990732d841a603aae42d06a36eefbb985f 100644 (file)
--- a/gcc/config/i386/i386.cc
+++ b/gcc/config/i386/i386.cc
@@ -1940,7 +1940,8 @@ type_natural_mode (const_tree type, const CUMULATIVE_ARGS *cum,
            if (GET_MODE_NUNITS (mode) == TYPE_VECTOR_SUBPARTS (type)
                && GET_MODE_INNER (mode) == innermode)
              {
-               if (size == 64 && !TARGET_AVX512F && !TARGET_IAMCU)
+               if (size == 64 && (!TARGET_AVX512F || !TARGET_EVEX512)
+                   && !TARGET_IAMCU)
                  {
                    static bool warnedavx512f;
                    static bool warnedavx512f_ret;
@@ -4363,7 +4364,7 @@ ix86_return_in_memory (const_tree type, const_tree fntype ATTRIBUTE_UNUSED)
 
          /* AVX512F values are returned in ZMM0 if available.  */
          if (size == 64)
-           return !TARGET_AVX512F;
+           return !TARGET_AVX512F || !TARGET_EVEX512;
        }
 
       if (mode == XFmode)
@@ -20448,7 +20449,7 @@ ix86_hard_regno_mode_ok (unsigned int regno, machine_mode mode)
          - any of 512-bit wide vector mode
          - any scalar mode.  */
       if (TARGET_AVX512F
-         && (VALID_AVX512F_REG_OR_XI_MODE (mode)
+         && ((VALID_AVX512F_REG_OR_XI_MODE (mode) && TARGET_EVEX512)
              || VALID_AVX512F_SCALAR_MODE (mode)))
        return true;
 
@@ -20700,7 +20701,7 @@ ix86_set_reg_reg_cost (machine_mode mode)
 
     case MODE_VECTOR_INT:
     case MODE_VECTOR_FLOAT:
-      if ((TARGET_AVX512F && VALID_AVX512F_REG_MODE (mode))
+      if ((TARGET_AVX512F && TARGET_EVEX512 && VALID_AVX512F_REG_MODE (mode))
          || (TARGET_AVX && VALID_AVX256_REG_MODE (mode))
          || (TARGET_SSE2 && VALID_SSE2_REG_MODE (mode))
          || (TARGET_SSE && VALID_SSE_REG_MODE (mode))
@@ -21429,7 +21430,8 @@ ix86_rtx_costs (rtx x, machine_mode mode, int outer_code_i, int opno,
        {
          /* (ior (not ...) ...) can be a single insn in AVX512.  */
          if (GET_CODE (XEXP (x, 0)) == NOT && TARGET_AVX512F
-             && (GET_MODE_SIZE (mode) == 64
+             && ((TARGET_EVEX512
+                  && GET_MODE_SIZE (mode) == 64)
                  || (TARGET_AVX512VL
                      && (GET_MODE_SIZE (mode) == 32
                          || GET_MODE_SIZE (mode) == 16))))
@@ -21477,7 +21479,8 @@ ix86_rtx_costs (rtx x, machine_mode mode, int outer_code_i, int opno,
 
              /* (and (not ...) (not ...)) can be a single insn in AVX512.  */
              if (GET_CODE (right) == NOT && TARGET_AVX512F
-                 && (GET_MODE_SIZE (mode) == 64
+                 && ((TARGET_EVEX512
+                      && GET_MODE_SIZE (mode) == 64)
                      || (TARGET_AVX512VL
                          && (GET_MODE_SIZE (mode) == 32
                              || GET_MODE_SIZE (mode) == 16))))
@@ -21547,7 +21550,8 @@ ix86_rtx_costs (rtx x, machine_mode mode, int outer_code_i, int opno,
        {
          /* (not (xor ...)) can be a single insn in AVX512.  */
          if (GET_CODE (XEXP (x, 0)) == XOR && TARGET_AVX512F
-             && (GET_MODE_SIZE (mode) == 64
+             && ((TARGET_EVEX512
+                  && GET_MODE_SIZE (mode) == 64)
                  || (TARGET_AVX512VL
                      && (GET_MODE_SIZE (mode) == 32
                          || GET_MODE_SIZE (mode) == 16))))
@@ -23191,7 +23195,7 @@ ix86_vector_mode_supported_p (machine_mode mode)
     return true;
   if (TARGET_AVX && VALID_AVX256_REG_MODE (mode))
     return true;
-  if (TARGET_AVX512F && VALID_AVX512F_REG_MODE (mode))
+  if (TARGET_AVX512F && TARGET_EVEX512 && VALID_AVX512F_REG_MODE (mode))
     return true;
   if ((TARGET_MMX || TARGET_MMX_WITH_SSE)
       && VALID_MMX_REG_MODE (mode))
@@ -23972,7 +23976,7 @@ ix86_preferred_simd_mode (scalar_mode mode)
   switch (mode)
     {
     case E_QImode:
-      if (TARGET_AVX512BW && !TARGET_PREFER_AVX256)
+      if (TARGET_AVX512BW && TARGET_EVEX512 && !TARGET_PREFER_AVX256)
        return V64QImode;
       else if (TARGET_AVX && !TARGET_PREFER_AVX128)
        return V32QImode;
@@ -23980,7 +23984,7 @@ ix86_preferred_simd_mode (scalar_mode mode)
        return V16QImode;
 
     case E_HImode:
-      if (TARGET_AVX512BW && !TARGET_PREFER_AVX256)
+      if (TARGET_AVX512BW && TARGET_EVEX512 && !TARGET_PREFER_AVX256)
        return V32HImode;
       else if (TARGET_AVX && !TARGET_PREFER_AVX128)
        return V16HImode;
@@ -23988,7 +23992,7 @@ ix86_preferred_simd_mode (scalar_mode mode)
        return V8HImode;
 
     case E_SImode:
-      if (TARGET_AVX512F && !TARGET_PREFER_AVX256)
+      if (TARGET_AVX512F && TARGET_EVEX512 && !TARGET_PREFER_AVX256)
        return V16SImode;
       else if (TARGET_AVX && !TARGET_PREFER_AVX128)
        return V8SImode;
@@ -23996,7 +24000,7 @@ ix86_preferred_simd_mode (scalar_mode mode)
        return V4SImode;
 
     case E_DImode:
-      if (TARGET_AVX512F && !TARGET_PREFER_AVX256)
+      if (TARGET_AVX512F && TARGET_EVEX512 && !TARGET_PREFER_AVX256)
        return V8DImode;
       else if (TARGET_AVX && !TARGET_PREFER_AVX128)
        return V4DImode;
@@ -24010,15 +24014,16 @@ ix86_preferred_simd_mode (scalar_mode mode)
            {
              if (TARGET_PREFER_AVX128)
                return V8HFmode;
-             else if (TARGET_PREFER_AVX256)
+             else if (TARGET_PREFER_AVX256 || !TARGET_EVEX512)
                return V16HFmode;
            }
-         return V32HFmode;
+         if (TARGET_EVEX512)
+           return V32HFmode;
        }
       return word_mode;
 
     case E_SFmode:
-      if (TARGET_AVX512F && !TARGET_PREFER_AVX256)
+      if (TARGET_AVX512F && TARGET_EVEX512 && !TARGET_PREFER_AVX256)
        return V16SFmode;
       else if (TARGET_AVX && !TARGET_PREFER_AVX128)
        return V8SFmode;
@@ -24026,7 +24031,7 @@ ix86_preferred_simd_mode (scalar_mode mode)
        return V4SFmode;
 
     case E_DFmode:
-      if (TARGET_AVX512F && !TARGET_PREFER_AVX256)
+      if (TARGET_AVX512F && TARGET_EVEX512 && !TARGET_PREFER_AVX256)
        return V8DFmode;
       else if (TARGET_AVX && !TARGET_PREFER_AVX128)
        return V4DFmode;
@@ -24046,13 +24051,13 @@ ix86_preferred_simd_mode (scalar_mode mode)
 static unsigned int
 ix86_autovectorize_vector_modes (vector_modes *modes, bool all)
 {
-  if (TARGET_AVX512F && !TARGET_PREFER_AVX256)
+  if (TARGET_AVX512F && TARGET_EVEX512 && !TARGET_PREFER_AVX256)
     {
       modes->safe_push (V64QImode);
       modes->safe_push (V32QImode);
       modes->safe_push (V16QImode);
     }
-  else if (TARGET_AVX512F && all)
+  else if (TARGET_AVX512F && TARGET_EVEX512 && all)
     {
       modes->safe_push (V32QImode);
       modes->safe_push (V16QImode);
@@ -24090,7 +24095,7 @@ ix86_get_mask_mode (machine_mode data_mode)
   unsigned elem_size = vector_size / nunits;
 
   /* Scalar mask case.  */
-  if ((TARGET_AVX512F && vector_size == 64)
+  if ((TARGET_AVX512F && TARGET_EVEX512 && vector_size == 64)
       || (TARGET_AVX512VL && (vector_size == 32 || vector_size == 16)))
     {
       if (elem_size == 4
@@ -24588,7 +24593,7 @@ ix86_simd_clone_compute_vecsize_and_simdlen (struct cgraph_node *node,
     {
       /* If the function isn't exported, we can pick up just one ISA
         for the clones.  */
-      if (TARGET_AVX512F)
+      if (TARGET_AVX512F && TARGET_EVEX512)
        clonei->vecsize_mangle = 'e';
       else if (TARGET_AVX2)
        clonei->vecsize_mangle = 'd';
@@ -24680,17 +24685,17 @@ ix86_simd_clone_usable (struct cgraph_node *node)
        return -1;
       if (!TARGET_AVX)
        return 0;
-      return TARGET_AVX512F ? 3 : TARGET_AVX2 ? 2 : 1;
+      return (TARGET_AVX512F && TARGET_EVEX512) ? 3 : TARGET_AVX2 ? 2 : 1;
     case 'c':
       if (!TARGET_AVX)
        return -1;
-      return TARGET_AVX512F ? 2 : TARGET_AVX2 ? 1 : 0;
+      return (TARGET_AVX512F && TARGET_EVEX512) ? 2 : TARGET_AVX2 ? 1 : 0;
     case 'd':
       if (!TARGET_AVX2)
        return -1;
-      return TARGET_AVX512F ? 1 : 0;
+      return (TARGET_AVX512F && TARGET_EVEX512) ? 1 : 0;
     case 'e':
-      if (!TARGET_AVX512F)
+      if (!TARGET_AVX512F || !TARGET_EVEX512)
        return -1;
       return 0;
     default:

diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h
index 7fa7585e058d9dec3172c97273b50160abed6d37..ab7cafa508d720adad0232ffb69676894c0cc9e3 100644 (file)
--- a/gcc/config/i386/i386.h
+++ b/gcc/config/i386/i386.h
@@ -774,7 +774,8 @@ extern const char *host_detect_local_cpu (int argc, const char **argv);
    TARGET_ABSOLUTE_BIGGEST_ALIGNMENT.  */
 
 #define BIGGEST_ALIGNMENT \
-  (TARGET_IAMCU ? 32 : (TARGET_AVX512F ? 512 : (TARGET_AVX ? 256 : 128)))
+  (TARGET_IAMCU ? 32 : ((TARGET_AVX512F && TARGET_EVEX512) \
+                       ? 512 : (TARGET_AVX ? 256 : 128)))
 
 /* Maximum stack alignment.  */
 #define MAX_STACK_ALIGNMENT MAX_OFILE_ALIGNMENT
@@ -1848,7 +1849,7 @@ typedef struct ix86_args {
    MOVE_MAX_PIECES defaults to MOVE_MAX.  */
 
 #define MOVE_MAX \
-  ((TARGET_AVX512F \
+  ((TARGET_AVX512F && TARGET_EVEX512\
     && (ix86_move_max == PVW_AVX512 \
        || ix86_store_max == PVW_AVX512)) \
    ? 64 \
@@ -1867,7 +1868,7 @@ typedef struct ix86_args {
    store_by_pieces of 16/32/64 bytes.  */
 #define STORE_MAX_PIECES \
   (TARGET_INTER_UNIT_MOVES_TO_VEC \
-   ? ((TARGET_AVX512F && ix86_store_max == PVW_AVX512) \
+   ? ((TARGET_AVX512F && TARGET_EVEX512 && ix86_store_max == PVW_AVX512) \
       ? 64 \
       : ((TARGET_AVX \
          && ix86_store_max >= PVW_AVX256) \