sebastien deldon (PGI)
2014-Jun-13 09:05 UTC
[LLVMdev] Is it possible to create a variable that aliases a field in a struct ?
Hi all, I would like to create a variable that aliases a field in a struct like : %struct._dpowk_16 = type < { [32 x [32 x double]], [32 x [32 x double]], [32 x [32 x i64]] } > @_dpowk_16 = common addrspace(1) global %struct._dpowk_16 zeroinitializer, align 16 @r_d_alias = alias [32 x [32 x double]] addrspace(1) * bitcast (i8 addrspace(1) * getelementptr (i8 addrspace(1) * bitcast (%struct._dpowk_16 addrspace(1)* @_dpowk_16 to i8 addrspace(1) *), i64 8192) to [32 x [32 x double]] addrspace(1) * ) When I use opt I got following message : Aliasee should be either GlobalValue or bitcast of GlobalValue [32 x [32 x double]] addrspace(1)* @r_d_alias Broken module found, compilation aborted! 0 opt 0x00000000010e3abf 1 opt 0x00000000010e5a22 2 libpthread.so.0 0x0000003dd0a0f710 3 libc.so.6 0x0000003dd0232925 gsignal + 53 4 libc.so.6 0x0000003dd0234105 abort + 373 5 opt 0x00000000010a3e8a 6 opt 0x000000000107c654 llvm::FPPassManager::doFinalization(llvm::Module&) + 84 7 opt 0x000000000107df79 llvm::FunctionPassManagerImpl::doFinalization(llvm::Module&) + 105 8 opt 0x000000000053b25d main + 6829 9 libc.so.6 0x0000003dd021ed1d __libc_start_main + 253 10 opt 0x000000000052c5c9 Stack dump: 0. Program arguments: opt -O2 -S gblmod.ll -o gblmod.opt.ll Is there a way to have a global value that reflects a field in a struct ? Thanks for your answers Seb ----------------------------------------------------------------------------------- This email message is for the sole use of the intended recipient(s) and may contain confidential information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. ----------------------------------------------------------------------------------- -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20140613/f9aaa8bf/attachment.html>