s390.opt revision 1.1
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 21m31 22Target Report RejectNegative Negative(m64) InverseMask(64BIT) 2331 bit ABI 24 25m64 26Target Report RejectNegative Negative(m31) Mask(64BIT) 2764 bit ABI 28 29march= 30Target RejectNegative Joined Var(s390_arch_string) 31Generate code for given CPU 32 33mbackchain 34Target Report Mask(BACKCHAIN) 35Maintain backchain pointer 36 37mdebug 38Target Report Mask(DEBUG_ARG) 39Additional debug prints 40 41mesa 42Target Report RejectNegative Negative(mzarch) InverseMask(ZARCH) 43ESA/390 architecture 44 45mfused-madd 46Target Report Mask(FUSED_MADD) 47Enable fused multiply/add instructions 48 49mhard-dfp 50Target Report Mask(HARD_DFP) 51Enable decimal floating point hardware support 52 53mhard-float 54Target Report RejectNegative Negative(msoft-float) InverseMask(SOFT_FLOAT, HARD_FLOAT) 55Enable hardware floating point 56 57mlong-double-128 58Target Report RejectNegative Negative(mlong-double-64) Mask(LONG_DOUBLE_128) 59Use 128-bit long double 60 61mlong-double-64 62Target Report RejectNegative Negative(mlong-double-128) InverseMask(LONG_DOUBLE_128) 63Use 64-bit long double 64 65mpacked-stack 66Target Report Mask(PACKED_STACK) 67Use packed stack layout 68 69msmall-exec 70Target Report Mask(SMALL_EXEC) 71Use bras for executable < 64k 72 73msoft-float 74Target Report RejectNegative Negative(mhard-float) Mask(SOFT_FLOAT) 75Disable hardware floating point 76 77mstack-guard= 78Target RejectNegative Joined 79Set the max. number of bytes which has to be left to stack size before a trap instruction is triggered 80 81mstack-size= 82Target RejectNegative Joined 83Emit extra code in the function prologue in order to trap if the stack size exceeds the given limit 84 85mtune= 86Target RejectNegative Joined 87Schedule code for given CPU 88 89mmvcle 90Target Report Mask(MVCLE) 91mvcle use 92 93mwarn-dynamicstack 94Target RejectNegative Var(s390_warn_dynamicstack_p) 95Warn if a function uses alloca or creates an array with dynamic size 96 97mwarn-framesize= 98Target RejectNegative Joined 99Warn if a single function's framesize exceeds the given framesize 100 101mzarch 102Target Report RejectNegative Negative(mesa) Mask(ZARCH) 103z/Architecture 104