[llvm-commits] [llvm] r149588 - in /llvm/trunk: lib/CodeGen/LiveInterval.cpp test/CodeGen/Generic/2012-02-01-CoalescerBug.ll

[Lang Hames]

You're right. I tried to reproduce the issue on other targets without
success. This should live in CodeGen/ARM. Thanks for catching that.

- Lang.

On Thu, Feb 2, 2012 at 3:51 AM, NAKAMURA Takumi <geek4civic at gmail.com>wrote:

> 2012/2/2 Lang Hames <lhames at gmail.com>:
> > Author: lhames
> > Date: Wed Feb  1 23:37:34 2012
> > New Revision: 149588
> >
> > URL: http://llvm.org/viewvc/llvm-project?rev=149588&view=rev
> > Log:
> > PR11868. The previous loop in LiveIntervals::join would sometimes fall
> over if
> > more than two adjacent ranges needed to be merged. The new version
> should be
> > able to handle an arbitrary sequence of adjancent ranges.
>
> > --- llvm/trunk/test/CodeGen/Generic/2012-02-01-CoalescerBug.ll (added)
> > +++ llvm/trunk/test/CodeGen/Generic/2012-02-01-CoalescerBug.ll Wed Feb
>  1 23:37:34 2012
> > @@ -0,0 +1,26 @@
> > +; RUN: llc -verify-coalescing < %s
> > +; PR11868
> > +
> > +target datalayout =
> "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:64:128-a0:0:64-n32-S64"
> > +target triple = "armv7-none-linux-gnueabi"
>
> It must fail without targets=arm.
>
> Worked around in r149604.
> Please restore it if you could reproduce on other targets.
>
> ...Takumi
>
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