gcc/config/s390/s390.opt

   1 ; Options for the S/390 / zSeries port of the compiler.
   2
   3 ; Copyright (C) 2005-2016 Free Software Foundation, Inc.
   4 ;
   5 ; This file is part of GCC.
   6 ;
   7 ; GCC is free software; you can redistribute it and/or modify it under
   8 ; the terms of the GNU General Public License as published by the Free
   9 ; Software Foundation; either version 3, or (at your option) any later
  10 ; version.
  11 ;
  12 ; GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 ; WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 ; FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 ; for more details.
  16 ;
  17 ; You should have received a copy of the GNU General Public License
  18 ; along with GCC; see the file COPYING3.  If not see
  19 ; <http://www.gnu.org/licenses/>.
  20
  21 HeaderInclude
  22 config/s390/s390-opts.h
  23
  24 ;; Definitions to add to the cl_target_option and gcc_options structures
  25
  26 ;; whether -march was specified
  27 TargetVariable
  28 unsigned char s390_arch_specified
  29
  30 ;; Flags derived from s390_arch
  31 TargetVariable
  32 int s390_arch_flags
  33
  34 ;; whether -mtune was specified
  35 TargetVariable
  36 unsigned char s390_tune_specified
  37
  38 ;; Flags derived from s390_tune
  39 TargetVariable
  40 int s390_tune_flags
  41
  42 ;; Cpu cost table (this is actually a "const struct processor_cost *")
  43 Variable
  44 long s390_cost_pointer
  45
  46 m31
  47 Target Report RejectNegative Negative(m64) InverseMask(64BIT)
  48 31 bit ABI.
  49
  50 m64
  51 Target Report RejectNegative Negative(m31) Mask(64BIT)
  52 64 bit ABI.
  53
  54 march=
  55 Target RejectNegative Joined Enum(processor_type) Var(s390_arch) Init(PROCESSOR_max) Save
  56 Generate code for given CPU.
  57
  58 Enum
  59 Name(processor_type) Type(enum processor_type)
  60
  61 EnumValue
  62 Enum(processor_type) String(g5) Value(PROCESSOR_9672_G5)
  63
  64 EnumValue
  65 Enum(processor_type) String(g6) Value(PROCESSOR_9672_G6)
  66
  67 EnumValue
  68 Enum(processor_type) String(z900) Value(PROCESSOR_2064_Z900)
  69
  70 EnumValue
  71 Enum(processor_type) String(z990) Value(PROCESSOR_2084_Z990)
  72
  73 EnumValue
  74 Enum(processor_type) String(z9-109) Value(PROCESSOR_2094_Z9_109)
  75
  76 EnumValue
  77 Enum(processor_type) String(z9-ec) Value(PROCESSOR_2094_Z9_EC)
  78
  79 EnumValue
  80 Enum(processor_type) String(z10) Value(PROCESSOR_2097_Z10)
  81
  82 EnumValue
  83 Enum(processor_type) String(z196) Value(PROCESSOR_2817_Z196)
  84
  85 EnumValue
  86 Enum(processor_type) String(zEC12) Value(PROCESSOR_2827_ZEC12)
  87
  88 EnumValue
  89 Enum(processor_type) String(z13) Value(PROCESSOR_2964_Z13)
  90
  91 EnumValue
  92 Enum(processor_type) String(native) Value(PROCESSOR_NATIVE) DriverOnly
  93
  94 mbackchain
  95 Target Report Mask(BACKCHAIN) Save
  96 Maintain backchain pointer.
  97
  98 mdebug
  99 Target Report Mask(DEBUG_ARG) Save
 100 Additional debug prints.
 101
 102 mesa
 103 Target Report RejectNegative Negative(mzarch) InverseMask(ZARCH)
 104 ESA/390 architecture.
 105
 106 mhard-dfp
 107 Target Report Mask(HARD_DFP) Save
 108 Enable decimal floating point hardware support.
 109
 110 mhard-float
 111 Target Report RejectNegative Negative(msoft-float) InverseMask(SOFT_FLOAT, HARD_FLOAT) Save
 112 Enable hardware floating point.
 113
 114 mhotpatch=
 115 Target RejectNegative Report Joined Var(s390_deferred_options) Defer
 116 Takes two non-negative integer numbers separated by a comma.
 117 Prepend the function label with the number of two-byte Nop
 118 instructions indicated by the first.  Append Nop instructions
 119 covering the number of halfwords indicated by the second after the
 120 label.  Nop instructions of the largest possible size are used
 121 (six, four or two bytes), beginning with the largest possible
 122 size.  Using 0 for both values disables hotpatching.
 123
 124 mlong-double-128
 125 Target Report RejectNegative Negative(mlong-double-64) Mask(LONG_DOUBLE_128)
 126 Use 128-bit long double.
 127
 128 mlong-double-64
 129 Target Report RejectNegative Negative(mlong-double-128) InverseMask(LONG_DOUBLE_128)
 130 Use 64-bit long double.
 131
 132 mhtm
 133 Target Report Mask(OPT_HTM) Save
 134 Use hardware transactional execution instructions.
 135
 136 mvx
 137 Target Report Mask(OPT_VX) Save
 138 Use hardware vector facility instructions and enable the vector ABI.
 139
 140 mpacked-stack
 141 Target Report Mask(PACKED_STACK) Save
 142 Use packed stack layout.
 143
 144 msmall-exec
 145 Target Report Mask(SMALL_EXEC) Save
 146 Use bras for executable < 64k.
 147
 148 msoft-float
 149 Target Report RejectNegative Negative(mhard-float) Mask(SOFT_FLOAT) Save
 150 Disable hardware floating point.
 151
 152 mstack-guard=
 153 Target RejectNegative Negative(mno-stack-guard) Joined UInteger Var(s390_stack_guard) Save
 154 Set the max. number of bytes which has to be left to stack size before a trap instruction is triggered.
 155
 156 mno-stack-guard
 157 Target RejectNegative Alias(mstack-guard=,0) Negative(mstack-guard=)
 158 Switches off the -mstack-guard= option.
 159
 160 mstack-size=
 161 Target RejectNegative Joined UInteger Var(s390_stack_size) Save
 162 Emit extra code in the function prologue in order to trap if the stack size exceeds the given limit.
 163
 164 mno-stack-size
 165 Target RejectNegative Alias(mstack-size=,0) Negative(mstack-size=)
 166 Switches off the -mstack-size= option.
 167
 168 mtune=
 169 Target RejectNegative Joined Enum(processor_type) Var(s390_tune) Init(PROCESSOR_max) Save
 170 Schedule code for given CPU.
 171
 172 mmvcle
 173 Target Report Mask(MVCLE) Save
 174 mvcle use.
 175
 176 mzvector
 177 Target Report Mask(ZVECTOR) Save
 178 Enable the z vector language extension providing the context-sensitive
 179 vector macro and enable the Altivec-style builtins in vecintrin.h
 180
 181 mwarn-dynamicstack
 182 Target Var(s390_warn_dynamicstack_p) Save
 183 Warn if a function uses alloca or creates an array with dynamic size.
 184
 185 mwarn-framesize=
 186 Target RejectNegative Joined UInteger Var(s390_warn_framesize) Save
 187 Warn if a single function's framesize exceeds the given framesize.
 188
 189 mzarch
 190 Target Report RejectNegative Negative(mesa) Mask(ZARCH)
 191 z/Architecture.
 192
 193 mbranch-cost=
 194 Target Report Joined RejectNegative UInteger Var(s390_branch_cost) Init(1) Save
 195 Set the branch costs for conditional branch instructions.  Reasonable
 196 values are small, non-negative integers.  The default branch cost is
 197 1.
 198
 199 mlra
 200 Target Report Var(s390_lra_flag) Init(1) Save
 201 Use LRA instead of reload.