[LLVMdev] Preventing IR instruction duplication

[Jan Hoogerbrugge]

Hi,

For a certain type of analysis I generate inline assembly which I insert
into the LLVM IR code. This
inline assembly code contains labels that should not be duplicated. Problem
is that the tail
duplication pass duplicates code. It checks isNotDuplicatable on a machine
instruction however
there is no such a flag on an IR instruction that I could set. Is there a
way to tell in an IR pass
that code should not be duplicated?

Jan
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