| ; Options for the Adapteva EPIPHANY port of the compiler |
| ; |
| ; Copyright (C) 2005-2015 Free Software Foundation, Inc. |
| ; Contributed by Embecosm on behalf of Adapteva, 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/>. |
| |
| mhalf-reg-file |
| Target Mask(HALF_REG_FILE) |
| Don't use any of r32..r63. |
| |
| mprefer-short-insn-regs |
| Target Mask(PREFER_SHORT_INSN_REGS) |
| preferentially allocate registers that allow short instruction generation. |
| |
| mbranch-cost= |
| Target RejectNegative Joined UInteger Var(epiphany_branch_cost) Init(3) |
| Set branch cost |
| |
| mcmove |
| Target Mask(CMOVE) |
| enable conditional move instruction usage. |
| |
| mnops= |
| Target RejectNegative Joined UInteger Var(epiphany_n_nops) Init(0) |
| set number of nops to emit before each insn pattern |
| |
| ; Problems with using the flags from fsub for comparison are: |
| ; - Because of underflow (lack of subnormal numbers), different small numbers |
| ; can compare as equal. |
| ; - the set of comparisons is limited, and reversing comparisons doesn't work |
| ; in the presence of NaNs. |
| ; The latter problem might be tolerated with -ffinite-math-only , but nothing |
| ; in -funsafe-math-optimizations says different small numbers may be considered |
| ; equal. |
| msoft-cmpsf |
| Target Mask(SOFT_CMPSF) |
| Use software floating point comparisons |
| |
| msplit-lohi |
| Target Mask(SPLIT_LOHI) |
| Enable split of 32 bit immediate loads into low / high part |
| |
| mpost-inc |
| Target Mask(POST_INC) |
| Enable use of POST_INC / POST_DEC |
| |
| mpost-modify |
| Target Mask(POST_MODIFY) |
| Enable use of POST_MODIFY |
| |
| mstack-offset= |
| Target RejectNegative Joined UInteger Var(epiphany_stack_offset) Init(EPIPHANY_STACK_OFFSET) |
| Set number of bytes on the stack preallocated for use by the callee. |
| |
| mround-nearest |
| target Mask(ROUND_NEAREST) |
| Assume round to nearest is selected for purposes of scheduling. |
| |
| mlong-calls |
| Target Mask(LONG_CALLS) |
| Generate call insns as indirect calls |
| |
| mshort-calls |
| Target Mask(SHORT_CALLS) |
| Generate call insns as direct calls |
| |
| msmall16 |
| Target Mask(SMALL16) |
| Assume labels and symbols can be addressed using 16 bit absolute addresses. |
| |
| mfp-mode= |
| Target RejectNegative Joined Var(epiphany_normal_fp_mode) Enum(attr_fp_mode) Init(FP_MODE_CALLER) |
| |
| ; The values are from enum attr_fp_mode, but using that enum would bring |
| ; problems with enum forward declarations. |
| Enum |
| Name(attr_fp_mode) Type(int) |
| |
| EnumValue |
| Enum(attr_fp_mode) String(caller) Value(FP_MODE_CALLER) |
| |
| EnumValue |
| Enum(attr_fp_mode) String(round-nearest) Value(FP_MODE_ROUND_NEAREST) |
| |
| EnumValue |
| Enum(attr_fp_mode) String(truncate) Value(FP_MODE_ROUND_TRUNC) |
| |
| EnumValue |
| Enum(attr_fp_mode) String(int) Value(FP_MODE_INT) |
| |
| may-round-for-trunc |
| Target Mask(MAY_ROUND_FOR_TRUNC) |
| A floatig point to integer truncation may be replaced with rounding to save mode switching |
| |
| mvect-double |
| Target Mask(VECT_DOUBLE) |
| Vectorize for double-word operations. |
| |
| max-vect-align= |
| Target RejectNegative Joined Var(epiphany_vect_align) Enum(vect_align) Init(8) |
| |
| Enum |
| Name(vect_align) Type(int) |
| |
| EnumValue |
| Enum(vect_align) String(4) Value(4) |
| |
| EnumValue |
| Enum(vect_align) String(8) Value(8) |
| |
| msplit-vecmove-early |
| Target Mask(SPLIT_VECMOVE_EARLY) |
| Split unaligned 8 byte vector moves before post-modify address generation. |
| |
| mfp-iarith |
| Target Mask(FP_IARITH) |
| Use the floating point unit for integer add/subtract. |
| |
| m1reg- |
| Target RejectNegative Joined Var(epiphany_m1reg) Enum(m1reg) Init(-1) |
| Set register to hold -1. |
| |
| Enum |
| Name(m1reg) Type(int) |
| |
| EnumValue |
| Enum(m1reg) String(none) Value(-1) |
| |
| EnumValue |
| Enum(m1reg) String(r43) Value(43) |
| |
| EnumValue |
| Enum(m1reg) String(r63) Value(63) |
