[LLVMdev] Disassembly broken?

[Greg Fitzgerald]

Yep, b.w using ARM's "alternative syntax" is broken.  Luckily, though LLVM
bitcode doesn't compile to this form, and will always use a label instead.
 Here's a patch that only acknowledges the broken instructions:

https://github.com/garious/llvm/commit/916c4badd816178da9fdbac5b5ed2331a7201f98

I submitted this to llvm-commits a while back, but nobody replied.  :(

-Greg



On Thu, Dec 27, 2012 at 4:20 PM, Vladimir Pouzanov <farcaller at gmail.com>wrote:

> Hi all.
>
> I came across a strange behaviour in the instruction printer for Thumbv2:
>
> The instruction is 0xf000b800, which is a b.w #0
>
> LLVM returns it as b.w #-262144, which doesn't make any sense to me.
>
> Should I consider it a bug?
>
> --
> Vladimir Pouzanov
> http://www.farcaller.net/
>
>
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