llvm dev - Jan 2009 - [LLVMdev] Possible bug in LiveIntervals (triggered on the XCore target)?

Hi Richard,

Thanks for working on this! Your patched solved my initial problem,
but introduced another one. Please find attached another BC file that
fails on xcore with the linear scan regalloc.

This is the error message I get
eliminateFrameIndex Frame size too big: -3
0   llc       0x08affd1e
1   libc.so.6 0xb7d35a01 abort + 257
2   llc       0x081a0972
llvm::XCoreRegisterInfo::eliminateFrameIndex(llvm::ilist_iterator<llvm::MachineInstr>,
int, llvm::RegScavenger*) const + 1570
Aborted

Could you check what is still wrong?

-Roman

2009/1/14, Richard Osborne <richard at xmos.com>:
> Chris Lattner wrote:
>  > On Jan 14, 2009, at 3:14 AM, Richard Osborne wrote:
>  >
>  >
>  >>> Evan
>  >>>
>  >> OK, that make sense, I'll take a look at changing this.
I've added a
>  >> bug
>  >> for the issue:
>  >>
>  >> http://llvm.org/bugs/show_bug.cgi?id=3324
>  >>
>  >> There is currently no Backend: XCore component in bugzilla so
I've put
>  >> it under new-bugs. Could someone add this component for me.
>  >>
>  >
>  > Added.  You should also be automatically CC'd on anything filed
to
>  > that component,
>  >
>  > -Chris
>  >
>
> Thanks,
>
>  I've just commited a fix in r62238:
>
> 
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20090112/072150.html
>
>
>  --
>  Richard Osborne | XMOS
>  http://www.xmos.com
>
>
>  _______________________________________________
>
> LLVM Developers mailing list
>  LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>  http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>
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Roman Levenstein wrote:
> Hi Richard,
>
> Thanks for working on this! Your patched solved my initial problem,
> but introduced another one. Please find attached another BC file that
> fails on xcore with the linear scan regalloc.
>
> This is the error message I get
> eliminateFrameIndex Frame size too big: -3
> 0   llc       0x08affd1e
> 1   libc.so.6 0xb7d35a01 abort + 257
> 2   llc       0x081a0972
>
llvm::XCoreRegisterInfo::eliminateFrameIndex(llvm::ilist_iterator<llvm::MachineInstr>,
> int, llvm::RegScavenger*) const + 1570
> Aborted
>
> Could you check what is still wrong?
>
> -Roman
I had a fix for this in my local branch which I hadn't got around to 
commiting. This should be fixed in 62258.

http://llvm.org/viewvc/llvm-project?rev=62258&view=rev

-- 
Richard Osborne | XMOS
http://www.xmos.com

Hi Richard,

2009/1/15, Richard Osborne <richard at xmos.com>:
> Roman Levenstein wrote:
>  > Hi Richard,
>  >
>  > Thanks for working on this! Your patched solved my initial problem,
>  > but introduced another one. Please find attached another BC file that
>  > fails on xcore with the linear scan regalloc.
>  >
>  > This is the error message I get
>  > eliminateFrameIndex Frame size too big: -3
>  > 0   llc       0x08affd1e
>  > 1   libc.so.6 0xb7d35a01 abort + 257
>  > 2   llc       0x081a0972
>  >
llvm::XCoreRegisterInfo::eliminateFrameIndex(llvm::ilist_iterator<llvm::MachineInstr>,
>  > int, llvm::RegScavenger*) const + 1570
>  > Aborted
>  >
>  > Could you check what is still wrong?
>  >
>  > -Roman
>
> I had a fix for this in my local branch which I hadn't got around to
>  commiting. This should be fixed in 62258.
>
>  http://llvm.org/viewvc/llvm-project?rev=62258&view=rev
Thanks! That solved my problem. No more crashes related to the LR
register on XCore!

-Roman