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Unsequenced assignment detection is very slow for large expressions
A quick work-around hack is to set unsequenced_gen_backwards_ = false in xlscc/translator.h
#pragma hls_top void my_package(char x[32], char y[1]) { y[0] = 1 + x[0] - 2 * x[1] - x[2] - x[4] + x[5] + x[6] - x[7] - x[10] - x[11] - 2 * x[12] - x[13] - x[17] - x[19] - x[20] - x[22] + 2 * x[23] - x[24] + x[25] - x[26] - x[27] - x[28] - x[29] - x[30] - 2 * x[31]; }