gcc/config/s390/s390.opt

   1 ; Options for the S/390 / zSeries port of the compiler.
   2
   3 ; Copyright (C) 2005, 2006, 2007 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 m31
  22 Target Report RejectNegative InverseMask(64BIT)
  23 31 bit ABI
  24
  25 m64
  26 Target Report RejectNegative Mask(64BIT)
  27 64 bit ABI
  28
  29 march=
  30 Target RejectNegative Joined Var(s390_arch_string)
  31 Generate code for given CPU
  32
  33 mbackchain
  34 Target Report Mask(BACKCHAIN)
  35 Maintain backchain pointer
  36
  37 mdebug
  38 Target Report Mask(DEBUG_ARG)
  39 Additional debug prints
  40
  41 mesa
  42 Target Report RejectNegative InverseMask(ZARCH)
  43 ESA/390 architecture
  44
  45 mfused-madd
  46 Target Report Mask(FUSED_MADD)
  47 Enable fused multiply/add instructions
  48
  49 mhard-dfp
  50 Target Report RejectNegative InverseMask(SOFT_DFP, HARD_DFP)
  51 Enable hardware decimal floating point
  52
  53 mhard-float
  54 Target Report RejectNegative InverseMask(SOFT_FLOAT, HARD_FLOAT)
  55 Enable hardware floating point
  56
  57 mlong-double-128
  58 Target Report RejectNegative Mask(LONG_DOUBLE_128)
  59 Use 128-bit long double
  60
  61 mlong-double-64
  62 Target Report RejectNegative InverseMask(LONG_DOUBLE_128)
  63 Use 64-bit long double
  64
  65 mpacked-stack
  66 Target Report Mask(PACKED_STACK)
  67 Use packed stack layout
  68
  69 msmall-exec
  70 Target Report Mask(SMALL_EXEC)
  71 Use bras for executable < 64k
  72
  73 msoft-dfp
  74 Target Report RejectNegative Mask(SOFT_DFP)
  75 Disable hardware decimal floating point
  76
  77 msoft-float
  78 Target Report RejectNegative Mask(SOFT_FLOAT)
  79 Disable hardware floating point
  80
  81 mstack-guard=
  82 Target RejectNegative Joined
  83 Set the max. number of bytes which has to be left to stack size before a trap instruction is triggered
  84
  85 mstack-size=
  86 Target RejectNegative Joined
  87 Emit extra code in the function prologue in order to trap if the stack size exceeds the given limit
  88
  89 mtune=
  90 Target RejectNegative Joined
  91 Schedule code for given CPU
  92
  93 mmvcle
  94 Target Report Mask(MVCLE)
  95 mvcle use
  96
  97 mwarn-dynamicstack
  98 Target RejectNegative Var(s390_warn_dynamicstack_p)
  99 Warn if a function uses alloca or creates an array with dynamic size
 100
 101 mwarn-framesize=
 102 Target RejectNegative Joined
 103 Warn if a single function's framesize exceeds the given framesize
 104
 105 mzarch
 106 Target Report RejectNegative Mask(ZARCH)
 107 z/Architecture