我无法理解LLVM-IR指令“fptosi...to”和“fptoui...to”之间的区别。我写了一个示例程序来更好地理解这些指令的语义。#includeintmain(intargc,char**argv){doubled=-3.5-4;unsignedintui=(unsignedint)d;intsi=(int)d;printf("unsigned%u,0x%x\n",ui,ui);printf("signed%i,0x%x\n",si,si);return0;}正如预期的那样，clang生成了这两种指令...%5=fptouidouble%4toi32storei32%5,i