| ; Options for the Synopsys DesignWare ARC port of the compiler |
| ; |
| ; Copyright (C) 2005-2026 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/arc/arc-opts.h |
| |
| ; Formerly documented as deprecated; use configure options instead. |
| mbig-endian |
| Target RejectNegative Mask(BIG_ENDIAN) Undocumented |
| Compile code for big endian mode. |
| |
| ; Formerly documented as deprecated; use configure options instead. |
| mlittle-endian |
| Target RejectNegative InverseMask(BIG_ENDIAN) Undocumented |
| Compile code for little endian mode. This is the default. |
| |
| mno-cond-exec |
| Target RejectNegative Mask(NO_COND_EXEC) |
| Disable ARCompact specific pass to generate conditional execution instructions. |
| |
| mA6 |
| Target |
| Generate ARCompact 32-bit code for ARC600 processor. |
| |
| mARC600 |
| Target |
| Same as -mA6. |
| |
| mARC601 |
| Target |
| Generate ARCompact 32-bit code for ARC601 processor. |
| |
| mA7 |
| Target |
| Generate ARCompact 32-bit code for ARC700 processor. |
| |
| mARC700 |
| Target |
| Same as -mA7. |
| |
| mjli-always |
| Target Mask(JLI_ALWAYS) |
| Force all calls to be made via a jli instruction. |
| |
| mmpy-option= |
| Target RejectNegative Joined Enum(arc_mpy) Var(arc_mpy_option) Init(DEFAULT_arc_mpy_option) |
| -mmpy-option=MPY Compile ARCv2 code with a multiplier design option. |
| |
| Enum |
| Name(arc_mpy) Type(int) |
| |
| EnumValue |
| Enum(arc_mpy) String(0) Value(0) |
| |
| EnumValue |
| Enum(arc_mpy) String(none) Value(0) Canonical |
| |
| EnumValue |
| Enum(arc_mpy) String(1) Value(1) |
| |
| EnumValue |
| Enum(arc_mpy) String(w) Value(1) Canonical |
| |
| EnumValue |
| Enum(arc_mpy) String(2) Value(2) |
| |
| EnumValue |
| Enum(arc_mpy) String(mpy) Value(2) |
| |
| EnumValue |
| Enum(arc_mpy) String(wlh1) Value(2) Canonical |
| |
| EnumValue |
| Enum(arc_mpy) String(3) Value(3) |
| |
| EnumValue |
| Enum(arc_mpy) String(wlh2) Value(3) Canonical |
| |
| EnumValue |
| Enum(arc_mpy) String(4) Value(4) |
| |
| EnumValue |
| Enum(arc_mpy) String(wlh3) Value(4) Canonical |
| |
| EnumValue |
| Enum(arc_mpy) String(5) Value(5) |
| |
| EnumValue |
| Enum(arc_mpy) String(wlh4) Value(5) Canonical |
| |
| EnumValue |
| Enum(arc_mpy) String(6) Value(6) |
| |
| EnumValue |
| Enum(arc_mpy) String(wlh5) Value(6) Canonical |
| |
| EnumValue |
| Enum(arc_mpy) String(7) Value(7) |
| |
| EnumValue |
| Enum(arc_mpy) String(plus_dmpy) Value(7) Canonical |
| |
| EnumValue |
| Enum(arc_mpy) String(8) Value(8) |
| |
| EnumValue |
| Enum(arc_mpy) String(plus_macd) Value(8) Canonical |
| |
| EnumValue |
| Enum(arc_mpy) String(9) Value(9) |
| |
| EnumValue |
| Enum(arc_mpy) String(plus_qmacw) Value(9) Canonical |
| |
| mdiv-rem |
| Target Mask(DIVREM) |
| Enable DIV-REM instructions for ARCv2. |
| |
| mcode-density |
| Target Mask(CODE_DENSITY) |
| Enable code density instructions for ARCv2. |
| |
| mmixed-code |
| Target Ignore Undocumented |
| Does nothing. Preserved for backward compatibility. |
| |
| ; We use an explict definition for the negative form because that is the |
| ; actually interesting option, and we want that to have its own comment. |
| mvolatile-cache |
| Target RejectNegative Mask(VOLATILE_CACHE_SET) |
| Use ordinarily cached memory accesses for volatile references. |
| |
| mno-volatile-cache |
| Target RejectNegative InverseMask(VOLATILE_CACHE_SET) |
| Enable cache bypass for volatile references. |
| |
| mbarrel-shifter |
| Target Mask(BARREL_SHIFTER) |
| Generate instructions supported by barrel shifter. |
| |
| mnorm |
| Target Mask(NORM_SET) |
| Generate norm instruction. |
| |
| mswap |
| Target Mask(SWAP_SET) |
| Generate swap instruction. |
| |
| mmul64 |
| Target Mask(MUL64_SET) |
| Generate mul64 and mulu64 instructions. |
| |
| mno-mpy |
| Target Mask(NOMPY_SET) Undocumented Warn(%qs is deprecated) |
| Do not generate mpy instructions for ARC700. |
| |
| mea |
| Target Mask(EA_SET) |
| Generate extended arithmetic instructions, only valid for ARC700. |
| |
| msoft-float |
| Target Mask(0) |
| Dummy flag. This is the default unless FPX switches are provided explicitly. |
| |
| mlong-calls |
| Target Mask(LONG_CALLS_SET) |
| Generate call insns as register indirect calls. |
| |
| mbrcc |
| Target InverseMask(NO_BRCC_SET) |
| Generate BRcc instructions in arc_reorg. |
| |
| msdata |
| Target InverseMask(NO_SDATA_SET) |
| Generate sdata references. This is the default, unless you compile for PIC. |
| |
| mmillicode |
| Target Mask(MILLICODE_THUNK_SET) |
| Generate millicode thunks. |
| |
| mspfp |
| Target Mask(SPFP_COMPACT_SET) |
| FPX: Generate Single Precision FPX (compact) instructions. |
| |
| mspfp-compact |
| Target Mask(SPFP_COMPACT_SET) MaskExists |
| FPX: Generate Single Precision FPX (compact) instructions. |
| |
| mspfp-fast |
| Target Mask(SPFP_FAST_SET) |
| FPX: Generate Single Precision FPX (fast) instructions. |
| |
| ; Formerly documented as deprecated, "obsolete FPX" |
| margonaut |
| Target Mask(ARGONAUT_SET) Undocumented |
| FPX: Enable Argonaut ARC CPU Double Precision Floating Point extensions. |
| |
| mdpfp |
| Target Mask(DPFP_COMPACT_SET) |
| FPX: Generate Double Precision FPX (compact) instructions. |
| |
| mdpfp-compact |
| Target Mask(DPFP_COMPACT_SET) MaskExists |
| FPX: Generate Double Precision FPX (compact) instructions. |
| |
| mdpfp-fast |
| Target Mask(DPFP_FAST_SET) |
| FPX: Generate Double Precision FPX (fast) instructions. |
| |
| mdpfp-lrsr |
| Target InverseMask(DPFP_DISABLE_LRSR) |
| Enable LR and SR instructions to use FPX extension aux registers. |
| |
| msimd |
| Target Mask(SIMD_SET) |
| Enable generation of ARC SIMD instructions via target-specific builtins. |
| |
| mcpu= |
| Target RejectNegative Joined Var(arc_cpu) Enum(processor_type) Init(PROCESSOR_NONE) |
| -mcpu=CPU Compile code for ARC variant CPU. |
| |
| msize-level= |
| Target RejectNegative Joined UInteger Var(arc_size_opt_level) Init(-1) |
| Size optimization level: 0:none 1:opportunistic 2: regalloc 3:drop align, -Os. |
| |
| misize |
| Target PchIgnore Var(TARGET_DUMPISIZE) |
| Annotate assembler instructions with estimated addresses. |
| |
| mmultcost= |
| Target RejectNegative Joined UInteger Var(arc_multcost) Init(-1) |
| Cost to assume for a multiply instruction, with 4 being equal to a normal insn. |
| |
| mtune= |
| Target RejectNegative ToLower Joined Var(arc_tune) Enum(arc_tune_attr) Init(ARC_TUNE_NONE) |
| -mtune=TUNE Tune code for given ARC variant. |
| |
| Enum |
| Name(arc_tune_attr) Type(int) |
| |
| EnumValue |
| Enum(arc_tune_attr) String(arc600) Value(ARC_TUNE_ARC600) |
| |
| EnumValue |
| Enum(arc_tune_attr) String(arc601) Value(ARC_TUNE_ARC600) |
| |
| EnumValue |
| Enum(arc_tune_attr) String(arc7xx) Value(ARC_TUNE_ARC7XX) |
| |
| EnumValue |
| Enum(arc_tune_attr) String(arc700) Value(ARC_TUNE_ARC700_4_2_STD) |
| |
| EnumValue |
| Enum(arc_tune_attr) String(arc700-xmac) Value(ARC_TUNE_ARC700_4_2_XMAC) |
| |
| EnumValue |
| Enum(arc_tune_attr) String(arc725d) Value(ARC_TUNE_ARC700_4_2_XMAC) |
| |
| EnumValue |
| Enum(arc_tune_attr) String(arc750d) Value(ARC_TUNE_ARC700_4_2_XMAC) |
| |
| EnumValue |
| Enum(arc_tune_attr) String(core3) Value(ARC_TUNE_CORE_3) |
| |
| EnumValue |
| Enum(arc_tune_attr) String(release31a) Value(ARC_TUNE_ARCHS4X_REL31A) |
| |
| mindexed-loads |
| Target Var(TARGET_INDEXED_LOADS) Init(TARGET_INDEXED_LOADS_DEFAULT) |
| Enable the use of indexed loads. |
| |
| mauto-modify-reg |
| Target Var(TARGET_AUTO_MODIFY_REG) Init(TARGET_AUTO_MODIFY_REG_DEFAULT) |
| Enable the use of pre/post modify with register displacement. |
| |
| mmul32x16 |
| Target Mask(MULMAC_32BY16_SET) |
| Generate 32x16 multiply and mac instructions. |
| |
| munalign-prob-threshold= |
| Target Ignore Undocumented |
| Does nothing. Preserved for backward compatibility. |
| |
| mmedium-calls |
| Target Var(TARGET_MEDIUM_CALLS) Init(TARGET_MMEDIUM_CALLS_DEFAULT) |
| Don't use less than 25 bit addressing range for calls. |
| |
| mannotate-align |
| Target Ignore Undocumented |
| Does nothing. Preserved for backward compatibility. |
| |
| malign-call |
| Target Ignore Undocumented |
| Does nothing. Preserved for backward compatibility. |
| |
| mRcq |
| Target Ignore Undocumented |
| Does nothing. Preserved for backward compatibility. |
| |
| |
| mRcw |
| Target Ignore Undocumented |
| Does nothing. Preserved for backward compatibility. |
| |
| |
| mearly-cbranchsi |
| Target Var(TARGET_EARLY_CBRANCHSI) |
| Enable pre-reload use of cbranchsi pattern. |
| |
| mbbit-peephole |
| Target Ignore Undocumented |
| Does nothing. Preserved for backward compatibility. |
| |
| mcase-vector-pcrel |
| Target Var(TARGET_CASE_VECTOR_PC_RELATIVE) |
| Use pc-relative switch case tables - this enables case table shortening. |
| |
| mcompact-casesi |
| Target Undocumented Warn(%qs is deprecated) |
| Enable compact casesi pattern. |
| |
| mq-class |
| Target Undocumented Warn(%qs is deprecated) |
| Enable 'q' instruction alternatives. |
| |
| mexpand-adddi |
| Target Undocumented Warn(%qs is deprecated) |
| Expand adddi3 and subdi3 at rtl generation time into add.f / adc etc. |
| |
| |
| ; Flags used by the assembler, but for which we define preprocessor |
| ; macro symbols as well. |
| mcrc |
| Target Undocumented Warn(%qs is deprecated) |
| Enable variable polynomial CRC extension. |
| |
| mdsp-packa |
| Target Undocumented Warn(%qs is deprecated) |
| Enable DSP 3.1 Pack A extensions. |
| |
| mdvbf |
| Target Undocumented Warn(%qs is deprecated) |
| Enable dual viterbi butterfly extension. |
| |
| mmac-d16 |
| Target Undocumented Warn(%qs is deprecated) |
| |
| mmac-24 |
| Target Undocumented Warn(%qs is deprecated) |
| |
| mtelephony |
| Target RejectNegative Undocumented Warn(%qs is deprecated) |
| Enable Dual and Single Operand Instructions for Telephony. |
| |
| mxy |
| Target |
| Enable XY Memory extension (DSP version 3). |
| |
| ; ARC700 4.10 extension instructions |
| mlock |
| Target |
| Enable Locked Load/Store Conditional extension. |
| |
| mswape |
| Target |
| Enable swap byte ordering extension instruction. |
| |
| mrtsc |
| Target Undocumented Warn(%qs is deprecated) |
| Enable 64-bit Time-Stamp Counter extension instruction. |
| |
| ; Formerly documented as deprecated. |
| EB |
| Target Undocumented |
| Pass -EB option through to linker. |
| |
| ; Formerly documented as deprecated. |
| EL |
| Target Undocumented |
| Pass -EL option through to linker. |
| |
| marclinux |
| Target |
| Pass -marclinux option through to linker. |
| |
| marclinux_prof |
| Target |
| Pass -marclinux_prof option through to linker. |
| |
| mlra |
| Target Ignore Undocumented |
| Does nothing. Preserved for backward compatibility. |
| |
| mlra-priority-none |
| Target RejectNegative Var(arc_lra_priority_tag, ARC_LRA_PRIORITY_NONE) |
| Don't indicate any priority with TARGET_REGISTER_PRIORITY. |
| |
| mlra-priority-compact |
| Target RejectNegative Var(arc_lra_prioritytag, ARC_LRA_PRIORITY_COMPACT) |
| Indicate priority for r0..r3 / r12..r15 with TARGET_REGISTER_PRIORITY. |
| |
| mlra-priority-noncompact |
| Target RejectNegative Var(arc_lra_prioritytag, ARC_LRA_PRIORITY_NONCOMPACT) |
| Reduce priority for r0..r3 / r12..r15 with TARGET_REGISTER_PRIORITY. |
| |
| ; backward-compatibility aliases, translated by DRIVER_SELF_SPECS |
| |
| mEA |
| Target Undocumented |
| |
| multcost= |
| Target RejectNegative Joined Undocumented |
| |
| |
| matomic |
| Target Mask(ATOMIC) |
| Enable atomic instructions. |
| |
| mll64 |
| Target Mask(LL64) |
| Enable double load/store instructions for ARC HS. |
| |
| mfpu= |
| Target RejectNegative Joined Enum(arc_fpu) Var(arc_fpu_build) Init(DEFAULT_arc_fpu_build) |
| Specify the name of the target floating point configuration. |
| |
| Enum |
| Name(arc_fpu) Type(int) |
| |
| EnumValue |
| Enum(arc_fpu) String(fpus) Value(FPU_FPUS) |
| |
| EnumValue |
| Enum(arc_fpu) String(fpud) Value(FPU_FPUD) |
| |
| EnumValue |
| Enum(arc_fpu) String(fpuda) Value(FPU_FPUDA) |
| |
| EnumValue |
| Enum(arc_fpu) String(fpuda_div) Value(FPU_FPUDA_DIV) |
| |
| EnumValue |
| Enum(arc_fpu) String(fpuda_fma) Value(FPU_FPUDA_FMA) |
| |
| EnumValue |
| Enum(arc_fpu) String(fpuda_all) Value(FPU_FPUDA_ALL) |
| |
| EnumValue |
| Enum(arc_fpu) String(fpus_div) Value(FPU_FPUS_DIV) |
| |
| EnumValue |
| Enum(arc_fpu) String(fpud_div) Value(FPU_FPUD_DIV) |
| |
| EnumValue |
| Enum(arc_fpu) String(fpus_fma) Value(FPU_FPUS_FMA) |
| |
| EnumValue |
| Enum(arc_fpu) String(fpud_fma) Value(FPU_FPUD_FMA) |
| |
| EnumValue |
| Enum(arc_fpu) String(fpus_all) Value(FPU_FPUS_ALL) |
| |
| EnumValue |
| Enum(arc_fpu) String(fpud_all) Value(FPU_FPUD_ALL) |
| |
| mtp-regno= |
| Target RejectNegative Joined UInteger Var(arc_tp_regno) Init(TARGET_ARC_TP_REGNO_DEFAULT) |
| Specify thread pointer register number. |
| |
| mtp-regno=none |
| Target RejectNegative Var(arc_tp_regno,-1) |
| |
| mbitops |
| Target Var(TARGET_NPS_BITOPS) Init(TARGET_NPS_BITOPS_DEFAULT) |
| Enable use of NPS400 bit operations. |
| |
| mcmem |
| Target Var(TARGET_NPS_CMEM) Init(TARGET_NPS_CMEM_DEFAULT) |
| Enable use of NPS400 xld/xst extension. |
| |
| munaligned-access |
| Target Var(unaligned_access) Init(UNALIGNED_ACCESS_DEFAULT) |
| Enable unaligned word and halfword accesses to packed data. |
| |
| mirq-ctrl-saved= |
| Target RejectNegative Joined Var(arc_deferred_options) Defer |
| Specifies the registers that the processor saves on an interrupt entry and exit. |
| |
| mrgf-banked-regs= |
| Target RejectNegative Joined Var(arc_deferred_options) Defer |
| Specifies the number of registers replicated in second register bank on entry to fast interrupt. |
| |
| mlpc-width= |
| Target RejectNegative Joined Enum(arc_lpc) Var(arc_lpcwidth) Init(32) |
| Sets LP_COUNT register width. Possible values are 8, 16, 20, 24, 28, and 32. |
| |
| Enum |
| Name(arc_lpc) Type(int) |
| |
| EnumValue |
| Enum(arc_lpc) String(8) Value(8) |
| |
| EnumValue |
| Enum(arc_lpc) String(16) Value(16) |
| |
| EnumValue |
| Enum(arc_lpc) String(20) Value(20) |
| |
| EnumValue |
| Enum(arc_lpc) String(24) Value(24) |
| |
| EnumValue |
| Enum(arc_lpc) String(28) Value(28) |
| |
| EnumValue |
| Enum(arc_lpc) String(32) Value(32) |
| |
| mrf16 |
| Target Mask(RF16) |
| Enable 16-entry register file. |
| |
| mbranch-index |
| Target Var(TARGET_BRANCH_INDEX) Init(DEFAULT_BRANCH_INDEX) |
| Enable use of BI/BIH instructions when available. |
| |
| mcode-density-frame |
| Target Var(TARGET_CODE_DENSITY_FRAME) Init(TARGET_CODE_DENSITY_FRAME_DEFAULT) |
| Enable ENTER_S and LEAVE_S opcodes for ARCv2. |
