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Re: [google gcc-4_9] fix undefined references in debug_info
- From: Xinliang David Li <davidxl at google dot com>
- To: Rong Xu <xur at google dot com>
- Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>, Teresa Johnson <tejohnson at google dot com>
- Date: Fri, 3 Oct 2014 09:28:49 -0700
- Subject: Re: [google gcc-4_9] fix undefined references in debug_info
- Authentication-results: sourceware.org; auth=none
- References: <CAF1bQ=So_00WrLxxy_bn0wCfv9JetyVWoVo6=+_D9F=FD1tJng at mail dot gmail dot com>
This patch should be targeting trunk gcc?
David
On Fri, Oct 3, 2014 at 9:23 AM, Rong Xu <xur@google.com> wrote:
> Hi,
>
> This patch fixed a bug exposed in build kernel with fdo.
>
> We cannot simply overwrite the bb footer in emit_barrier_after_bb as
> the bb may already have a footer (in this case, a deleted label stmt).
> We need to output this label because it's a user label and debug_info
> has a reference to it.
>
> Tested with problematic file and regression test.
> Trunk may also have the same issue, but I need to work on a testcase.
>
> Thanks,
>
> -Rong