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1 ; Options for the MMIX port of the compiler.
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2
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3 ; Copyright (C) 2005-2017 Free Software Foundation, Inc.
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4 ;
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5 ; This file is part of GCC.
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6 ;
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7 ; GCC is free software; you can redistribute it and/or modify it under
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8 ; the terms of the GNU General Public License as published by the Free
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9 ; Software Foundation; either version 3, or (at your option) any later
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10 ; version.
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11 ;
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12 ; GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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13 ; WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 ; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 ; for more details.
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16 ;
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17 ; You should have received a copy of the GNU General Public License
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18 ; along with GCC; see the file COPYING3. If not see
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19 ; <http://www.gnu.org/licenses/>.
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20
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21 ; FIXME: Get rid of this one.
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22 mlibfuncs
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23 Target Report Mask(LIBFUNC)
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24 For intrinsics library: pass all parameters in registers.
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25
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26 mabi=mmixware
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27 Target Report RejectNegative InverseMask(ABI_GNU)
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28 Use register stack for parameters and return value.
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29
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30 mabi=gnu
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31 Target Report RejectNegative Mask(ABI_GNU)
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32 Use call-clobbered registers for parameters and return value.
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33
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34 ; FIXME: Provide a way to *load* the epsilon register.
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35 mepsilon
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36 Target Report Mask(FCMP_EPSILON)
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37 Use epsilon-respecting floating point compare instructions.
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38
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39 mzero-extend
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40 Target Report Mask(ZERO_EXTEND)
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41 Use zero-extending memory loads, not sign-extending ones.
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42
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43 mknuthdiv
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44 Target Report Mask(KNUTH_DIVISION)
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45 Generate divide results with reminder having the same sign as the divisor (not the dividend).
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46
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47 mtoplevel-symbols
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48 Target Report Mask(TOPLEVEL_SYMBOLS)
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49 Prepend global symbols with \":\" (for use with PREFIX).
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50
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51 mno-set-program-start
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52 Target Report RejectNegative
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53 Do not provide a default start-address 0x100 of the program.
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54
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55 melf
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56 Target Report RejectNegative
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57 Link to emit program in ELF format (rather than mmo).
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58
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59 mbranch-predict
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60 Target Report RejectNegative Mask(BRANCH_PREDICT)
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61 Use P-mnemonics for branches statically predicted as taken.
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62
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63 mno-branch-predict
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64 Target Report RejectNegative InverseMask(BRANCH_PREDICT)
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65 Don't use P-mnemonics for branches.
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66
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67 ; We use the term "base address" since that's what Knuth uses. The base
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68 ; address goes in a global register. When addressing, it's more like
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69 ; "base address plus offset", with the offset being 0..255 from the base,
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70 ; which itself can be a symbol plus an offset. The effect is like having
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71 ; a constant pool in global registers, code offsetting from those
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72 ; registers (automatically causing a request for a suitable constant base
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73 ; address register) without having to know the specific register or the
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74 ; specific offset. The setback is that there's a limited number of
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75 ; registers, and you'll not find out until link time whether you
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76 ; should have compiled with -mno-base-addresses.
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77 mbase-addresses
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78 Target Report RejectNegative Mask(BASE_ADDRESSES)
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79 Use addresses that allocate global registers.
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80
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81 mno-base-addresses
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82 Target Report RejectNegative InverseMask(BASE_ADDRESSES)
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83 Do not use addresses that allocate global registers.
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84
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85 msingle-exit
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86 Target Report RejectNegative InverseMask(USE_RETURN_INSN)
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87 Generate a single exit point for each function.
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88
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89 mno-single-exit
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90 Target Report RejectNegative Mask(USE_RETURN_INSN)
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91 Do not generate a single exit point for each function.
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92
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93 mset-program-start=
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94 Target Report RejectNegative Joined
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95 Set start-address of the program.
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96
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97 mset-data-start=
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98 Target Report RejectNegative Joined
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99 Set start-address of data.
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