[llvm] r292661 - IPO, LTO: Plumb the summary from the LTO API into the pass manager.

[Davide Italiano via llvm-commits]

On Fri, Jan 20, 2017 at 2:18 PM, Peter Collingbourne via llvm-commits
<llvm-commits at lists.llvm.org> wrote:
> Author: pcc
> Date: Fri Jan 20 16:18:52 2017
> New Revision: 292661
>
> URL: http://llvm.org/viewvc/llvm-project?rev=292661&view=rev
> Log:
> IPO, LTO: Plumb the summary from the LTO API into the pass manager.
>

Hi Peter,
sorry to bring (late) bad news but this causes a regression when doing
LTO of one of our titles.
I was able to find a synthetic repro:

$ llvm-mc -filetype=obj breakable.s -o breakable.o
$ opt blah.ll -o blah.o
$ ld.lld breakable.o blah.o -shared

$ cat breakable.s
        .section        .rodata.patatino,"aG", at progbits,patatino,comdat
        .weak   patatino

$ cat blah.ll
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-scei-ps4"

@dipsy = external constant i8, !type !0

define void @tinkywinky() {
  store i8* @dipsy, i8** undef
  ret void
}

Thanks!

--
Davide