3.18.2. Adapteva Epiphany Options
3.18.2 Adapteva Epiphany Options
These ‘-m’ options are defined for Adapteva Epiphany:
-mhalf-reg-file- Don't allocate any register in the range
r32...r63. That allows code to run on hardware variants that lack these registers. -mprefer-short-insn-regs- Preferentially allocate registers that allow short instruction generation. This can result in increased instruction count, so this may either reduce or increase overall code size.
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-mbranch-cost=num - Set the cost of branches to roughly num “simple” instructions. This cost is only a heuristic and is not guaranteed to produce consistent results across releases.
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