[LLVMdev] bug report on MC asm parser evaluating expressions

[Kevin Enderby]

I just fixed this with r181366.
URL: http://llvm.org/viewvc/llvm-project?rev=181366&view=rev

Kev

On May 3, 2013, at 5:23 AM, Rafael Espíndola <rafael.espindola at gmail.com> wrote:

> On 3 May 2013 01:37, 杨勇勇 <triple.yang at gmail.com> wrote:
>> Hi, developers,
>> 
>> I notice following asm symbol definitions are eveluated improperly:
>> 
>> A = 9
>> B = 3*A - 2 * A + 1
>> 
>> the value of B should be 10 instead of 8.
>> 
>> It seems asm parser treat "B = 3*A - 2 * A + 1" as "B = 3*A - (2 * A + 1)"
>> because the second "*" has higher precedence than "-", and evaluation just
>> performs simple recursion within AsmParser::ParseBinOpRHS (which resides in
>> file lib/MC/MCParser/AsmParser.cpp).
>> 
>> Can some one make a fixup?
> 
> This is a horrible bug :-(
> 
> Can you please report it in llvm.org/bugs?
> 
> Thanks,
> Rafael
> 
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20130507/893335f9/attachment.html>