gcc/config/rs6000/rs6000-opts.h

   1 /* Definitions of target machine needed for option handling for GNU compiler,
   2    for IBM RS/6000.
   3    Copyright (C) 2010-2023 Free Software Foundation, Inc.
   4    Contributed by Michael Meissner (meissner@linux.vnet.ibm.com)
   5
   6    This file is part of GCC.
   7
   8    GCC is free software; you can redistribute it and/or modify it
   9    under the terms of the GNU General Public License as published
  10    by the Free Software Foundation; either version 3, or (at your
  11    option) any later version.
  12
  13    GCC is distributed in the hope that it will be useful, but WITHOUT
  14    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  15    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  16    License for more details.
  17
  18    Under Section 7 of GPL version 3, you are granted additional
  19    permissions described in the GCC Runtime Library Exception, version
  20    3.1, as published by the Free Software Foundation.
  21
  22    You should have received a copy of the GNU General Public License and
  23    a copy of the GCC Runtime Library Exception along with this program;
  24    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  25    <http://www.gnu.org/licenses/>.  */
  26
  27 #ifndef RS6000_OPTS_H
  28 #define RS6000_OPTS_H
  29
  30 /* Processor type.  Order must match cpu attribute in MD file.  */
  31 enum processor_type
  32  {
  33    PROCESSOR_PPC601,
  34    PROCESSOR_PPC603,
  35    PROCESSOR_PPC604,
  36    PROCESSOR_PPC604e,
  37    PROCESSOR_PPC620,
  38    PROCESSOR_PPC630,
  39
  40    PROCESSOR_PPC750,
  41    PROCESSOR_PPC7400,
  42    PROCESSOR_PPC7450,
  43
  44    PROCESSOR_PPC403,
  45    PROCESSOR_PPC405,
  46    PROCESSOR_PPC440,
  47    PROCESSOR_PPC476,
  48
  49    PROCESSOR_PPC8540,
  50    PROCESSOR_PPC8548,
  51    PROCESSOR_PPCE300C2,
  52    PROCESSOR_PPCE300C3,
  53    PROCESSOR_PPCE500MC,
  54    PROCESSOR_PPCE500MC64,
  55    PROCESSOR_PPCE5500,
  56    PROCESSOR_PPCE6500,
  57
  58    PROCESSOR_POWER4,
  59    PROCESSOR_POWER5,
  60    PROCESSOR_POWER6,
  61    PROCESSOR_POWER7,
  62    PROCESSOR_POWER8,
  63    PROCESSOR_POWER9,
  64    PROCESSOR_POWER10,
  65
  66    PROCESSOR_RS64A,
  67    PROCESSOR_MPCCORE,
  68    PROCESSOR_CELL,
  69    PROCESSOR_PPCA2,
  70    PROCESSOR_TITAN
  71 };
  72
  73
  74 /* Types of costly dependences.  */
  75 enum rs6000_dependence_cost
  76 {
  77   max_dep_latency = 1000,
  78   no_dep_costly,
  79   all_deps_costly,
  80   true_store_to_load_dep_costly,
  81   store_to_load_dep_costly
  82 };
  83
  84 /* Types of nop insertion schemes in sched target hook sched_finish.  */
  85 enum rs6000_nop_insertion
  86 {
  87   sched_finish_regroup_exact = 1000,
  88   sched_finish_pad_groups,
  89   sched_finish_none
  90 };
  91
  92 /* Dispatch group termination caused by an insn.  */
  93 enum group_termination
  94 {
  95   current_group,
  96   previous_group
  97 };
  98
  99 /* Enumeration to give which calling sequence to use.  */
 100 enum rs6000_abi {
 101   ABI_NONE,
 102   ABI_AIX,                      /* IBM's AIX, or Linux ELFv1 */
 103   ABI_ELFv2,                    /* Linux ELFv2 ABI */
 104   ABI_V4,                       /* System V.4/eabi */
 105   ABI_DARWIN                    /* Apple's Darwin (OS X kernel) */
 106 };
 107
 108 /* Small data support types.  */
 109 enum rs6000_sdata_type {
 110   SDATA_NONE,                   /* No small data support.  */
 111   SDATA_DATA,                   /* Just put data in .sbss/.sdata, don't use relocs.  */
 112   SDATA_SYSV,                   /* Use r13 to point to .sdata/.sbss.  */
 113   SDATA_EABI                    /* Use r13 like above, r2 points to .sdata2/.sbss2.  */
 114 };
 115
 116 /* Type of traceback to use.  */
 117 enum  rs6000_traceback_type {
 118   traceback_default = 0,
 119   traceback_none,
 120   traceback_part,
 121   traceback_full
 122 };
 123
 124 /* Code model for 64-bit linux.
 125    small: 16-bit toc offsets.
 126    medium: 32-bit toc offsets, static data and code within 2G of TOC pointer.
 127    large: 32-bit toc offsets, no limit on static data and code.  */
 128 enum rs6000_cmodel {
 129   CMODEL_SMALL,
 130   CMODEL_MEDIUM,
 131   CMODEL_LARGE
 132 };
 133
 134 /* Describe which vector unit to use for a given machine mode.  The
 135    VECTOR_MEM_* and VECTOR_UNIT_* macros assume that Altivec, VSX, and
 136    P8_VECTOR are contiguous.  */
 137 enum rs6000_vector {
 138   VECTOR_NONE,                  /* Type is not  a vector or not supported */
 139   VECTOR_ALTIVEC,               /* Use altivec for vector processing */
 140   VECTOR_VSX,                   /* Use VSX for vector processing */
 141   VECTOR_P8_VECTOR              /* Use ISA 2.07 VSX for vector processing */
 142 };
 143
 144 /* Where to get the canary for the stack protector.  */
 145 enum stack_protector_guard {
 146   SSP_TLS,                      /* per-thread canary in TLS block */
 147   SSP_GLOBAL                    /* global canary */
 148 };
 149
 150 /* No enumeration is defined to index the -mcpu= values (entries in
 151    processor_target_table), with the type int being used instead, but
 152    we need to distinguish the special "native" value.  */
 153 #define RS6000_CPU_OPTION_NATIVE -1
 154
 155 #endif