gcc/internal-fn.c

   1 /* Internal functions.
   2    Copyright (C) 2011-2013 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 3, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20 #include "config.h"
  21 #include "system.h"
  22 #include "coretypes.h"
  23 #include "internal-fn.h"
  24 #include "tree.h"
  25 #include "stor-layout.h"
  26 #include "expr.h"
  27 #include "optabs.h"
  28 #include "gimple.h"
  29
  30 /* The names of each internal function, indexed by function number.  */
  31 const char *const internal_fn_name_array[] = {
  32 #define DEF_INTERNAL_FN(CODE, FLAGS) #CODE,
  33 #include "internal-fn.def"
  34 #undef DEF_INTERNAL_FN
  35   "<invalid-fn>"
  36 };
  37
  38 /* The ECF_* flags of each internal function, indexed by function number.  */
  39 const int internal_fn_flags_array[] = {
  40 #define DEF_INTERNAL_FN(CODE, FLAGS) FLAGS,
  41 #include "internal-fn.def"
  42 #undef DEF_INTERNAL_FN
  43   0
  44 };
  45
  46 /* ARRAY_TYPE is an array of vector modes.  Return the associated insn
  47    for load-lanes-style optab OPTAB.  The insn must exist.  */
  48
  49 static enum insn_code
  50 get_multi_vector_move (tree array_type, convert_optab optab)
  51 {
  52   enum insn_code icode;
  53   enum machine_mode imode;
  54   enum machine_mode vmode;
  55
  56   gcc_assert (TREE_CODE (array_type) == ARRAY_TYPE);
  57   imode = TYPE_MODE (array_type);
  58   vmode = TYPE_MODE (TREE_TYPE (array_type));
  59
  60   icode = convert_optab_handler (optab, imode, vmode);
  61   gcc_assert (icode != CODE_FOR_nothing);
  62   return icode;
  63 }
  64
  65 /* Expand LOAD_LANES call STMT.  */
  66
  67 static void
  68 expand_LOAD_LANES (gimple stmt)
  69 {
  70   struct expand_operand ops[2];
  71   tree type, lhs, rhs;
  72   rtx target, mem;
  73
  74   lhs = gimple_call_lhs (stmt);
  75   rhs = gimple_call_arg (stmt, 0);
  76   type = TREE_TYPE (lhs);
  77
  78   target = expand_expr (lhs, NULL_RTX, VOIDmode, EXPAND_WRITE);
  79   mem = expand_normal (rhs);
  80
  81   gcc_assert (MEM_P (mem));
  82   PUT_MODE (mem, TYPE_MODE (type));
  83
  84   create_output_operand (&ops[0], target, TYPE_MODE (type));
  85   create_fixed_operand (&ops[1], mem);
  86   expand_insn (get_multi_vector_move (type, vec_load_lanes_optab), 2, ops);
  87 }
  88
  89 /* Expand STORE_LANES call STMT.  */
  90
  91 static void
  92 expand_STORE_LANES (gimple stmt)
  93 {
  94   struct expand_operand ops[2];
  95   tree type, lhs, rhs;
  96   rtx target, reg;
  97
  98   lhs = gimple_call_lhs (stmt);
  99   rhs = gimple_call_arg (stmt, 0);
 100   type = TREE_TYPE (rhs);
 101
 102   target = expand_expr (lhs, NULL_RTX, VOIDmode, EXPAND_WRITE);
 103   reg = expand_normal (rhs);
 104
 105   gcc_assert (MEM_P (target));
 106   PUT_MODE (target, TYPE_MODE (type));
 107
 108   create_fixed_operand (&ops[0], target);
 109   create_input_operand (&ops[1], reg, TYPE_MODE (type));
 110   expand_insn (get_multi_vector_move (type, vec_store_lanes_optab), 2, ops);
 111 }
 112
 113 static void
 114 expand_ANNOTATE (gimple stmt ATTRIBUTE_UNUSED)
 115 {
 116   gcc_unreachable ();
 117 }
 118
 119 /* This should get expanded in adjust_simduid_builtins.  */
 120
 121 static void
 122 expand_GOMP_SIMD_LANE (gimple stmt ATTRIBUTE_UNUSED)
 123 {
 124   gcc_unreachable ();
 125 }
 126
 127 /* This should get expanded in adjust_simduid_builtins.  */
 128
 129 static void
 130 expand_GOMP_SIMD_VF (gimple stmt ATTRIBUTE_UNUSED)
 131 {
 132   gcc_unreachable ();
 133 }
 134
 135 /* This should get expanded in adjust_simduid_builtins.  */
 136
 137 static void
 138 expand_GOMP_SIMD_LAST_LANE (gimple stmt ATTRIBUTE_UNUSED)
 139 {
 140   gcc_unreachable ();
 141 }
 142
 143 /* This should get expanded in the sanopt pass.  */
 144
 145 static void
 146 expand_UBSAN_NULL (gimple stmt ATTRIBUTE_UNUSED)
 147 {
 148   gcc_unreachable ();
 149 }
 150
 151 /* Routines to expand each internal function, indexed by function number.
 152    Each routine has the prototype:
 153
 154        expand_<NAME> (gimple stmt)
 155
 156    where STMT is the statement that performs the call. */
 157 static void (*const internal_fn_expanders[]) (gimple) = {
 158 #define DEF_INTERNAL_FN(CODE, FLAGS) expand_##CODE,
 159 #include "internal-fn.def"
 160 #undef DEF_INTERNAL_FN
 161   0
 162 };
 163
 164 /* Expand STMT, which is a call to internal function FN.  */
 165
 166 void
 167 expand_internal_call (gimple stmt)
 168 {
 169   internal_fn_expanders[(int) gimple_call_internal_fn (stmt)] (stmt);
 170 }