path: root/gcc/config/frv/frv.opt

; Options for the FR-V port of the compiler.

; Copyright (C) 2005-2017 Free Software Foundation, Inc.
;
; This file is part of GCC.
;
; GCC is free software; you can redistribute it and/or modify it under
; the terms of the GNU General Public License as published by the Free
; Software Foundation; either version 3, or (at your option) any later
; version.
;
; GCC is distributed in the hope that it will be useful, but WITHOUT ANY
; WARRANTY; without even the implied warranty of MERCHANTABILITY or
; FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
; for more details.
;
; You should have received a copy of the GNU General Public License
; along with GCC; see the file COPYING3.  If not see
; <http://www.gnu.org/licenses/>.

HeaderInclude
config/frv/frv-opts.h

; Value of -mcpu=.
Variable
frv_cpu_t frv_cpu_type = CPU_TYPE

macc-4
Target Report RejectNegative Mask(ACC_4)
Use 4 media accumulators.

macc-8
Target Report RejectNegative InverseMask(ACC_4, ACC_8)
Use 8 media accumulators.

malign-labels
Target Report Mask(ALIGN_LABELS)
Enable label alignment optimizations.

malloc-cc
Target Report RejectNegative Mask(ALLOC_CC)
Dynamically allocate cc registers.

; We used to default the branch cost to 2, but it was changed it to 1 to avoid
; generating SCC instructions and or/and-ing them together, and then doing the
; branch on the result, which collectively generate much worse code.
mbranch-cost=
Target RejectNegative Joined UInteger Var(frv_branch_cost_int) Init(1)
Set the cost of branches.

mcond-exec
Target Report Mask(COND_EXEC)
Enable conditional execution other than moves/scc.

mcond-exec-insns=
Target RejectNegative Joined UInteger Var(frv_condexec_insns) Init(8)
Change the maximum length of conditionally-executed sequences.

mcond-exec-temps=
Target RejectNegative Joined UInteger Var(frv_condexec_temps) Init(4)
Change the number of temporary registers that are available to conditionally-executed sequences.

mcond-move
Target Report Mask(COND_MOVE)
Enable conditional moves.

mcpu=
Target RejectNegative Joined Enum(frv_cpu) Var(frv_cpu_type)
Set the target CPU type.

Enum
Name(frv_cpu) Type(frv_cpu_t)
Known FR-V CPUs (for use with the -mcpu= option):

EnumValue
Enum(frv_cpu) String(simple) Value(FRV_CPU_SIMPLE)

EnumValue
Enum(frv_cpu) String(tomcat) Value(FRV_CPU_TOMCAT)

EnumValue
Enum(frv_cpu) String(fr550) Value(FRV_CPU_FR550)

EnumValue
Enum(frv_cpu) String(fr500) Value(FRV_CPU_FR500)

EnumValue
Enum(frv_cpu) String(fr450) Value(FRV_CPU_FR450)

EnumValue
Enum(frv_cpu) String(fr405) Value(FRV_CPU_FR405)

EnumValue
Enum(frv_cpu) String(fr400) Value(FRV_CPU_FR400)

EnumValue
Enum(frv_cpu) String(fr300) Value(FRV_CPU_FR300)

EnumValue
Enum(frv_cpu) String(frv) Value(FRV_CPU_GENERIC)

mdebug
Target Undocumented Var(TARGET_DEBUG)

mdebug-arg
Target Undocumented Var(TARGET_DEBUG_ARG)

mdebug-addr
Target Undocumented Var(TARGET_DEBUG_ADDR)

mdebug-cond-exec
Target Undocumented Var(TARGET_DEBUG_COND_EXEC)

mdebug-loc
Target Undocumented Var(TARGET_DEBUG_LOC)

mdebug-stack
Target Undocumented Var(TARGET_DEBUG_STACK)

mdouble
Target Report Mask(DOUBLE)
Use fp double instructions.

mdword
Target Report Mask(DWORD)
Change the ABI to allow double word insns.

mfdpic
Target Report Mask(FDPIC)
Enable Function Descriptor PIC mode.

mfixed-cc
Target Report RejectNegative InverseMask(ALLOC_CC, FIXED_CC)
Just use icc0/fcc0.

mfpr-32
Target Report RejectNegative Mask(FPR_32)
Only use 32 FPRs.

mfpr-64
Target Report RejectNegative InverseMask(FPR_32, FPR_64)
Use 64 FPRs.

mgpr-32
Target Report RejectNegative Mask(GPR_32)
Only use 32 GPRs.

mgpr-64
Target Report RejectNegative InverseMask(GPR_32, GPR_64)
Use 64 GPRs.

mgprel-ro
Target Report Mask(GPREL_RO)
Enable use of GPREL for read-only data in FDPIC.

mhard-float
Target Report RejectNegative InverseMask(SOFT_FLOAT, HARD_FLOAT)
Use hardware floating point.

minline-plt
Target Report Mask(INLINE_PLT)
Enable inlining of PLT in function calls.

mlibrary-pic
Target Report Mask(LIBPIC)
Enable PIC support for building libraries.

mlinked-fp
Target Report Mask(LINKED_FP)
Follow the EABI linkage requirements.

mlong-calls
Target Report Mask(LONG_CALLS)
Disallow direct calls to global functions.

mmedia
Target Report Mask(MEDIA)
Use media instructions.

mmuladd
Target Report Mask(MULADD)
Use multiply add/subtract instructions.

mmulti-cond-exec
Target Report Mask(MULTI_CE)
Enable optimizing &&/|| in conditional execution.

mnested-cond-exec
Target Report Mask(NESTED_CE)
Enable nested conditional execution optimizations.

; Not used by the compiler proper.
mno-eflags
Target RejectNegative
Do not mark ABI switches in e_flags.

moptimize-membar
Target Report Mask(OPTIMIZE_MEMBAR)
Remove redundant membars.

mpack
Target Report Mask(PACK)
Pack VLIW instructions.

mscc
Target Report Mask(SCC)
Enable setting GPRs to the result of comparisons.

msched-lookahead=
Target RejectNegative Joined UInteger Var(frv_sched_lookahead) Init(4)
Change the amount of scheduler lookahead.

msoft-float
Target Report RejectNegative Mask(SOFT_FLOAT)
Use software floating point.

mTLS
Target Report RejectNegative Mask(BIG_TLS)
Assume a large TLS segment.

mtls
Target Report RejectNegative InverseMask(BIG_TLS)
Do not assume a large TLS segment.

; Not used by the compiler proper.
mtomcat-stats
Target
Cause gas to print tomcat statistics.

; Not used by the compiler proper.
multilib-library-pic
Target RejectNegative
Link with the library-pic libraries.

mvliw-branch
Target Report Mask(VLIW_BRANCH)
Allow branches to be packed with other instructions.