[LLVMdev] Crash/Assert on -loop-reduce

[Ryan Taylor]

Ok, I have attached the bugpoint-reduced-blocks.ll test case, just fyi.
Thanks, I'm just curious at this point.

On Wed, Feb 8, 2012 at 11:56 AM, Eli Friedman <eli.friedman at gmail.com>wrote:

> On Wed, Feb 8, 2012 at 10:09 AM, Ryan Taylor <ryta1203 at gmail.com> wrote:
> > Unfortunately, I cannot provide the exact code, but I will attempt to
> look
> > for the reason and post a test case.
>
> Okay... note that bugpoint is very good at reducing testcases which crash.
>
> -Eli
>
> >
> >
> > On Tue, Feb 7, 2012 at 6:04 PM, Eli Friedman <eli.friedman at gmail.com>
> wrote:
> >>
> >> On Tue, Feb 7, 2012 at 5:52 PM, Ryan Taylor <ryta1203 at gmail.com> wrote:
> >> > 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.
> >>
> >> It's hard to say what is happening without a testcase.
> >>
> >> -Eli
> >
> >
>
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