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) 2010-2015 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
  64    PROCESSOR_RS64A,
  65    PROCESSOR_MPCCORE,
  66    PROCESSOR_CELL,
  67    PROCESSOR_PPCA2,
  68    PROCESSOR_TITAN
  69 };
  70
  71
  72 /* FP processor type.  */
  73 enum fpu_type_t
  74 {
  75   FPU_NONE,                     /* No FPU */
  76   FPU_SF_LITE,                  /* Limited Single Precision FPU */
  77   FPU_DF_LITE,                  /* Limited Double Precision FPU */
  78   FPU_SF_FULL,                  /* Full Single Precision FPU */
  79   FPU_DF_FULL                   /* Full Double Single Precision FPU */
  80 };
  81
  82
  83 /* Float128 support.  */
  84 enum float128_type_t
  85 {
  86   FLOAT128_UNSET        = -1,   /* Initial value.  */
  87   FLOAT128_NONE,                /* No __float128 support.  */
  88   FLOAT128_SW                   /* software __float128 support.  */
  89 };
  90
  91 /* Types of costly dependences.  */
  92 enum rs6000_dependence_cost
  93 {
  94   max_dep_latency = 1000,
  95   no_dep_costly,
  96   all_deps_costly,
  97   true_store_to_load_dep_costly,
  98   store_to_load_dep_costly
  99 };
 100
 101 /* Types of nop insertion schemes in sched target hook sched_finish.  */
 102 enum rs6000_nop_insertion
 103 {
 104   sched_finish_regroup_exact = 1000,
 105   sched_finish_pad_groups,
 106   sched_finish_none
 107 };
 108
 109 /* Dispatch group termination caused by an insn.  */
 110 enum group_termination
 111 {
 112   current_group,
 113   previous_group
 114 };
 115
 116 /* Enumeration to give which calling sequence to use.  */
 117 enum rs6000_abi {
 118   ABI_NONE,
 119   ABI_AIX,                      /* IBM's AIX, or Linux ELFv1 */
 120   ABI_ELFv2,                    /* Linux ELFv2 ABI */
 121   ABI_V4,                       /* System V.4/eabi */
 122   ABI_DARWIN                    /* Apple's Darwin (OS X kernel) */
 123 };
 124
 125 /* Small data support types.  */
 126 enum rs6000_sdata_type {
 127   SDATA_NONE,                   /* No small data support.  */
 128   SDATA_DATA,                   /* Just put data in .sbss/.sdata, don't use relocs.  */
 129   SDATA_SYSV,                   /* Use r13 to point to .sdata/.sbss.  */
 130   SDATA_EABI                    /* Use r13 like above, r2 points to .sdata2/.sbss2.  */
 131 };
 132
 133 /* Type of traceback to use.  */
 134 enum  rs6000_traceback_type {
 135   traceback_default = 0,
 136   traceback_none,
 137   traceback_part,
 138   traceback_full
 139 };
 140
 141 /* Code model for 64-bit linux.
 142    small: 16-bit toc offsets.
 143    medium: 32-bit toc offsets, static data and code within 2G of TOC pointer.
 144    large: 32-bit toc offsets, no limit on static data and code.  */
 145 enum rs6000_cmodel {
 146   CMODEL_SMALL,
 147   CMODEL_MEDIUM,
 148   CMODEL_LARGE
 149 };
 150
 151 /* Describe which vector unit to use for a given machine mode.  The
 152    VECTOR_MEM_* and VECTOR_UNIT_* macros assume that Altivec, VSX, and
 153    P8_VECTOR are contiguous.  */
 154 enum rs6000_vector {
 155   VECTOR_NONE,                  /* Type is not  a vector or not supported */
 156   VECTOR_ALTIVEC,               /* Use altivec for vector processing */
 157   VECTOR_VSX,                   /* Use VSX for vector processing */
 158   VECTOR_P8_VECTOR,             /* Use ISA 2.07 VSX for vector processing */
 159   VECTOR_PAIRED,                /* Use paired floating point for vectors */
 160   VECTOR_SPE,                   /* Use SPE for vector processing */
 161   VECTOR_OTHER                  /* Some other vector unit */
 162 };
 163
 164 /* No enumeration is defined to index the -mcpu= values (entries in
 165    processor_target_table), with the type int being used instead, but
 166    we need to distinguish the special "native" value.  */
 167 #define RS6000_CPU_OPTION_NATIVE -1
 168
 169 #endif