[LLVMdev] [LLVMDev] About user of bitcast/GEP instruction

[guoqing zhang]

Hi,

In PromoteMemoryToRegister.cpp, it seems to rely on the fact that the only
users of bitcast/GEP instruction are lifetime intrinsics
(llvm.lifetime.start/end). I did some searching in llvm/test folder, it
seems to be true.

However, by reading LLVM IR manual, I don't see any restriction stated on
the possible user of bitcast/GEP instruction. So my question is who impose
the restriction ? Is it Clang ?

Regards
-Guoqing
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