[llvm] r255175 - [X86] Enable shrink-wrapping by default, but keep it disabled for stack frames

[Sanjay Patel via llvm-commits]

This patch:
http://reviews.llvm.org/D15847

solves the hang for me with an x86-64 target.

On Mon, Jan 4, 2016 at 9:09 AM, Joerg Sonnenberger via llvm-commits <
llvm-commits at lists.llvm.org> wrote:

> On Wed, Dec 23, 2015 at 12:38:32AM +0100, Joerg Sonnenberger via
> llvm-commits wrote:
> > On Wed, Dec 09, 2015 at 11:08:19PM -0000, Quentin Colombet via
> llvm-commits wrote:
> > > Author: qcolombet
> > > Date: Wed Dec  9 17:08:18 2015
> > > New Revision: 255175
> > >
> > > URL: http://llvm.org/viewvc/llvm-project?rev=255175&view=rev
> > > Log:
> > > [X86] Enable shrink-wrapping by default, but keep it disabled for
> stack frames
> > > without a frame pointer when unwind may happen.
> > > This is a workaround for a bug in the way we emit the CFI directives
> for
> > > frameless unwind information. See PR25614.
> >
> > This hangs when compiling the attached input with -O2.
>
> Post-holiday ping.
>
> Joerg
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