[LLVMdev] Crash/Assert on -loop-reduce

[Ryan Taylor]

opt: /home/ryan/llvm/llvm_core/llvm-3.0/include/llvm/Support/Casting.h:194:
typename cast_retty<Instruction, User *>::ret_type llvm::cast(llvm::User
*const &): Assertion `isa<X>(Val) && "cast<Ty>() argument of incompatible
type!"' failed.
0  opt             0x000000000085cfef
1  opt             0x000000000085d509
2  libpthread.so.0 0x00007fdb30054c60
3  libc.so.6       0x00007fdb2f33fd05 gsignal + 53
4  libc.so.6       0x00007fdb2f343ab6 abort + 390
5  libc.so.6       0x00007fdb2f3387c5 __assert_fail + 245
6  opt             0x000000000051a9a6
7  opt             0x000000000051979e
8  opt             0x0000000000503863
9  opt             0x000000000050102e
10 opt             0x0000000000689184
llvm::LPPassManager::runOnFunction(llvm::Function&) + 836
11 opt             0x0000000000801f9f
llvm::FPPassManager::runOnFunction(llvm::Function&) + 351
12 opt             0x000000000080221b
llvm::FPPassManager::runOnModule(llvm::Module&) + 59
13 opt             0x000000000080236a
llvm::MPPassManager::runOnModule(llvm::Module&) + 282
14 opt             0x0000000000802941
llvm::PassManagerImpl::run(llvm::Module&) + 337
15 opt             0x0000000000802e4a llvm::PassManager::run(llvm::Module&)
+ 10
16 opt             0x00000000004919d7 main + 5511
17 libc.so.6       0x00007fdb2f32aeff __libc_start_main + 255
18 opt             0x000000000048bc95
Stack dump:

If I don't use the opt -loop-reduce then this code runs fine. I'm not
really sure the issue.
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