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2017 Mar 09
5
What is ConstantExpr?
Hi, All. Does anybody know about ConstantExpr in llvm? What's it? Since it always appears after llvm optimization such as -O2 level, what is it supposed to be to codegen? I am wondering it represents constant value which can be determined or computed at compile-time(actually is link-time) to improve performance. Although we do not know the actual constant value util the object file is linked.