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Hello > I am wondering if the modification made to the DAG is causing a problem, and > can it be done at all? If I cannot do this, is there any other place I can > look at, to make this work. It's hard to tell w/o seeing the exact code / DAG. Note, however, that this assertion is seen on simple LLVM IR: http://llvm.org/bugs/show_bug.cgi?id=15053 So, it might be not your bug after

Hi, I am working on a small optimization feature to replace the calls with indirect reference using a memory with an indirect reference using register. The purpose of this feature is to improve the performance of calls to functions referred to by function pointers. The motivation behind this work is that gcc does this optimization. Here is a small test case, that will generate an indirect call