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2009 Sep 08
2
[LLVMdev] how to change one operand of an LLVM instruction
I am trying to implement node splitting to transform irreducible CFGS to reducible ones. This means making copies of some basic blocks, which in turn means making copies of individual instructions. I can use the "clone" function to make an exact copy, but then I need to change some operands. For example, when I copy %1 = ... %2 = add %1, 5 I get %3 = ... %4 = add %1, 5