[llvm] r227645 - Add PPC test for r227481, but XFAIL because this is actually more work than it appeared to be.

[Hal Finkel]

----- Original Message -----
> From: "David Blaikie" <dblaikie at gmail.com>
> To: llvm-commits at cs.uiuc.edu
> Sent: Friday, January 30, 2015 5:52:19 PM
> Subject: [llvm] r227645 - Add PPC test for r227481,	but XFAIL because this is actually more work than it appeared to
> be.
> 
> Author: dblaikie
> Date: Fri Jan 30 17:52:19 2015
> New Revision: 227645
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=227645&view=rev
> Log:
> Add PPC test for r227481, but XFAIL because this is actually more
> work than it appeared to be.
> 
> Same sort of bug as on ARM where the cmp+branch are lowered to br_cc
> (choosing the branch's debugloc for the br_cc's debugloc) then
> expanded
> out to a cmp and a br, but both using the debug loc of the br_cc,
> thus
> losing fidelity.

Do we need to have two debug locations on br_cc? (and maybe select_cc?)

 -Hal

> 
> Added:
>     llvm/trunk/test/DebugInfo/PowerPC/line.test
> 
> Added: llvm/trunk/test/DebugInfo/PowerPC/line.test
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/PowerPC/line.test?rev=227645&view=auto
> ==============================================================================
> --- llvm/trunk/test/DebugInfo/PowerPC/line.test (added)
> +++ llvm/trunk/test/DebugInfo/PowerPC/line.test Fri Jan 30 17:52:19
> 2015
> @@ -0,0 +1,7 @@
> +; RUN: llc -mtriple=powerpc-unknown-linux -O0 -filetype=asm <
> %S/../Inputs/line.ll | FileCheck %S/../Inputs/line.ll
> +
> +; This is more complex than it looked. It's mixed up somewhere in
> SelectionDAG
> +; (legalized as br_cc, losing the separation between the comparison
> and the
> +; branch, then further lowered to cmplwi + brcc but without the
> fidelity that
> +; those two instructions are on separate lines)
> +; XFAIL: *
> 
> 
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-- 
Hal Finkel
Assistant Computational Scientist
Leadership Computing Facility
Argonne National Laboratory