frv.opt revision 1.5
1; Options for the FR-V port of the compiler. 2 3; Copyright (C) 2005-2015 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 21HeaderInclude 22config/frv/frv-opts.h 23 24; Value of -mcpu=. 25Variable 26frv_cpu_t frv_cpu_type = CPU_TYPE 27 28macc-4 29Target Report RejectNegative Mask(ACC_4) 30Use 4 media accumulators 31 32macc-8 33Target Report RejectNegative InverseMask(ACC_4, ACC_8) 34Use 8 media accumulators 35 36malign-labels 37Target Report Mask(ALIGN_LABELS) 38Enable label alignment optimizations 39 40malloc-cc 41Target Report RejectNegative Mask(ALLOC_CC) 42Dynamically allocate cc registers 43 44; We used to default the branch cost to 2, but it was changed it to 1 to avoid 45; generating SCC instructions and or/and-ing them together, and then doing the 46; branch on the result, which collectively generate much worse code. 47mbranch-cost= 48Target RejectNegative Joined UInteger Var(frv_branch_cost_int) Init(1) 49Set the cost of branches 50 51mcond-exec 52Target Report Mask(COND_EXEC) 53Enable conditional execution other than moves/scc 54 55mcond-exec-insns= 56Target RejectNegative Joined UInteger Var(frv_condexec_insns) Init(8) 57Change the maximum length of conditionally-executed sequences 58 59mcond-exec-temps= 60Target RejectNegative Joined UInteger Var(frv_condexec_temps) Init(4) 61Change the number of temporary registers that are available to conditionally-executed sequences 62 63mcond-move 64Target Report Mask(COND_MOVE) 65Enable conditional moves 66 67mcpu= 68Target RejectNegative Joined Enum(frv_cpu) Var(frv_cpu_type) 69Set the target CPU type 70 71Enum 72Name(frv_cpu) Type(frv_cpu_t) 73Known FR-V CPUs (for use with the -mcpu= option): 74 75EnumValue 76Enum(frv_cpu) String(simple) Value(FRV_CPU_SIMPLE) 77 78EnumValue 79Enum(frv_cpu) String(tomcat) Value(FRV_CPU_TOMCAT) 80 81EnumValue 82Enum(frv_cpu) String(fr550) Value(FRV_CPU_FR550) 83 84EnumValue 85Enum(frv_cpu) String(fr500) Value(FRV_CPU_FR500) 86 87EnumValue 88Enum(frv_cpu) String(fr450) Value(FRV_CPU_FR450) 89 90EnumValue 91Enum(frv_cpu) String(fr405) Value(FRV_CPU_FR405) 92 93EnumValue 94Enum(frv_cpu) String(fr400) Value(FRV_CPU_FR400) 95 96EnumValue 97Enum(frv_cpu) String(fr300) Value(FRV_CPU_FR300) 98 99EnumValue 100Enum(frv_cpu) String(frv) Value(FRV_CPU_GENERIC) 101 102mdebug 103Target Undocumented Var(TARGET_DEBUG) 104 105mdebug-arg 106Target Undocumented Var(TARGET_DEBUG_ARG) 107 108mdebug-addr 109Target Undocumented Var(TARGET_DEBUG_ADDR) 110 111mdebug-cond-exec 112Target Undocumented Var(TARGET_DEBUG_COND_EXEC) 113 114mdebug-loc 115Target Undocumented Var(TARGET_DEBUG_LOC) 116 117mdebug-stack 118Target Undocumented Var(TARGET_DEBUG_STACK) 119 120mdouble 121Target Report Mask(DOUBLE) 122Use fp double instructions 123 124mdword 125Target Report Mask(DWORD) 126Change the ABI to allow double word insns 127 128mfdpic 129Target Report Mask(FDPIC) 130Enable Function Descriptor PIC mode 131 132mfixed-cc 133Target Report RejectNegative InverseMask(ALLOC_CC, FIXED_CC) 134Just use icc0/fcc0 135 136mfpr-32 137Target Report RejectNegative Mask(FPR_32) 138Only use 32 FPRs 139 140mfpr-64 141Target Report RejectNegative InverseMask(FPR_32, FPR_64) 142Use 64 FPRs 143 144mgpr-32 145Target Report RejectNegative Mask(GPR_32) 146Only use 32 GPRs 147 148mgpr-64 149Target Report RejectNegative InverseMask(GPR_32, GPR_64) 150Use 64 GPRs 151 152mgprel-ro 153Target Report Mask(GPREL_RO) 154Enable use of GPREL for read-only data in FDPIC 155 156mhard-float 157Target Report RejectNegative InverseMask(SOFT_FLOAT, HARD_FLOAT) 158Use hardware floating point 159 160minline-plt 161Target Report Mask(INLINE_PLT) 162Enable inlining of PLT in function calls 163 164mlibrary-pic 165Target Report Mask(LIBPIC) 166Enable PIC support for building libraries 167 168mlinked-fp 169Target Report Mask(LINKED_FP) 170Follow the EABI linkage requirements 171 172mlong-calls 173Target Report Mask(LONG_CALLS) 174Disallow direct calls to global functions 175 176mmedia 177Target Report Mask(MEDIA) 178Use media instructions 179 180mmuladd 181Target Report Mask(MULADD) 182Use multiply add/subtract instructions 183 184mmulti-cond-exec 185Target Report Mask(MULTI_CE) 186Enable optimizing &&/|| in conditional execution 187 188mnested-cond-exec 189Target Report Mask(NESTED_CE) 190Enable nested conditional execution optimizations 191 192; Not used by the compiler proper. 193mno-eflags 194Target RejectNegative 195Do not mark ABI switches in e_flags 196 197moptimize-membar 198Target Report Mask(OPTIMIZE_MEMBAR) 199Remove redundant membars 200 201mpack 202Target Report Mask(PACK) 203Pack VLIW instructions 204 205mscc 206Target Report Mask(SCC) 207Enable setting GPRs to the result of comparisons 208 209msched-lookahead= 210Target RejectNegative Joined UInteger Var(frv_sched_lookahead) Init(4) 211Change the amount of scheduler lookahead 212 213msoft-float 214Target Report RejectNegative Mask(SOFT_FLOAT) 215Use software floating point 216 217mTLS 218Target Report RejectNegative Mask(BIG_TLS) 219Assume a large TLS segment 220 221mtls 222Target Report RejectNegative InverseMask(BIG_TLS) 223Do not assume a large TLS segment 224 225; Not used by the compiler proper. 226mtomcat-stats 227Target 228Cause gas to print tomcat statistics 229 230; Not used by the compiler proper. 231multilib-library-pic 232Target RejectNegative 233Link with the library-pic libraries 234 235mvliw-branch 236Target Report Mask(VLIW_BRANCH) 237Allow branches to be packed with other instructions 238