[参考译文] TMS320F28069：使用特定代码结构时、链接器崩溃并显示消息、寄存器分配失败

https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/1031329/tms320f28069-linker-crash-with-message-register-allocation-failed-when-certain-code-structure-is-used

指向此类代码的 IM 获取寄存器分配失败错误：

/***************************************************
 * checks if two angles(sectors) are adjacent
 **************************************************/
    inline bool_t isSectorAdjacent(uint16_t new_angle)
    {
        int16_t angle_diff = abs(new_angle - rotpos.angle);

        return angle_diff <= 60 or (new_angle == 330 and rotpos.angle == 30);
    }

/*****************************************
 * get current sector with offset
 ****************************************/
    int16_t getSector(void)
    {
        int16_t sector;

        if(config.adv_sector_fetching)
        {
            uint16_t GetCurrentHallAngle(void);
            float fastNormDeg(float);

            uint16_t current_sector = GetCurrentHallAngle();
            bool_t is_sector_adj = isSectorAdjacent(current_sector);

            if(is_sector_adj) sector = (int16_t)current_sector;
            else sector = (int16_t)rotpos.angle;        // if adjacency check fails just return normal version
        }
        else sector = (int16_t)rotpos.angle;

        sector += (rotpos.dir == REVERSE ? config.bwdsectoroffset : config.fwdsectoroffset);

        return fastNormDeg(sector);
    }

免责声明：这种失败绝非有效、只是我尝试修复问题的小试验和错误阶段的一部分。

对 Tobias F.