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[thirdparty/gcc.git] / gcc / config / spu / spu.opt

; Options for the SPU port of the compiler
; Copyright (C) 2006-2016 Free Software Foundation, Inc.

; This file 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 of the License, or (at your option)
; any later version.

; This file 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/>.

mwarn-reloc
Target Report Mask(WARN_RELOC)
Emit warnings when run-time relocations are generated.

merror-reloc
Target Report Mask(ERROR_RELOC)
Emit errors when run-time relocations are generated.

mbranch-cost=
Target RejectNegative Joined UInteger Var(spu_branch_cost) Init(20)
Specify cost of branches (Default 20).

msafe-dma
Target Report RejectNegative Mask(SAFE_DMA)
Make sure loads and stores are not moved past DMA instructions.

munsafe-dma
Target Report RejectNegative InverseMask(SAFE_DMA)
volatile must be specified on any memory that is effected by DMA.

mdual-nops
Target Report Var(spu_dual_nops,10) Init(10)
Insert nops when it might improve performance by allowing dual issue (default).

mdual-nops=
Target RejectNegative Joined UInteger Var(spu_dual_nops)
Insert nops when it might improve performance by allowing dual issue (default).

mstdmain
Target Report Mask(STD_MAIN)
Use standard main function as entry for startup.

mbranch-hints
Target Report Mask(BRANCH_HINTS)
Generate branch hints for branches.

mhint-max-nops=
Target RejectNegative Joined UInteger Var(spu_max_nops) Init(2)
Maximum number of nops to insert for a hint (Default 2).

mhint-max-distance=
Target RejectNegative Joined Var(spu_max_distance_str)
Approximate maximum number of instructions to allow between a hint and its branch [125].

msmall-mem
Target Report RejectNegative InverseMask(LARGE_MEM)
Generate code for 18 bit addressing.

mlarge-mem
Target Report RejectNegative Mask(LARGE_MEM)
Generate code for 32 bit addressing.

mfixed-range=
Target RejectNegative Joined Var(spu_fixed_range_string)
Specify range of registers to make fixed.

msafe-hints
Target Report Mask(SAFE_HINTS)
Insert hbrp instructions after hinted branch targets to avoid the SPU hang issue.

march=
Target RejectNegative Joined Var(spu_arch_string)
Generate code for given CPU.

mtune=
Target RejectNegative Joined Var(spu_tune_string)
Schedule code for given CPU.

mea32
Target Report RejectNegative Var(spu_ea_model,32) Init(32)
Access variables in 32-bit PPU objects (default).

mea64
Target Report RejectNegative Var(spu_ea_model,64)
Access variables in 64-bit PPU objects.

maddress-space-conversion
Target Report Mask(ADDRESS_SPACE_CONVERSION)
Allow conversions between __ea and generic pointers (default).

mcache-size=
Target Report RejectNegative Joined UInteger
Size (in KB) of software data cache.

matomic-updates
Target Report
Atomically write back software data cache lines (default).