[LLVMdev] assert in InnerLoopVectorizer::createEmptyLoop

[Chandler Carruth]

Please file a bug for these types of issues.


On Fri, Dec 21, 2012 at 1:49 PM, Akira Hatanaka <ahatanak at gmail.com> wrote:

> I am seeing an assert when I compile the attached program with clang:
>
> $ clang -fno-strict-aliasing -target mips64el-unknown-linux -O3
> -fomit-frame-pointer -S test1.c -o test1.ll -emit-llvm
>
>
> It asserts when LoopVectorize.cpp:506 is executed. It looks like it is
> complaining because it is trying to zero-extend an i64 (type
> Count->getType() returns i64) to an i32 (IdxTy).
>
> if (Count->getType() != IdxTy) {
>     // The exit count can be of pointer type. Convert it to the correct
>     // integer type.
>     if (ExitCount->getType()->isPointerTy())
>       Count = CastInst::CreatePointerCast(Count, IdxTy, "ptrcnt.to.int",
> Loc);
>     else
>       Count = CastInst::CreateZExtOrBitCast(Count, IdxTy, "zext.cnt",
> Loc); // <= this line
>   }
>
>
>
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