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Re: [google gcc-4.9] FDO build for linux kernel
- 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>
- Date: Thu, 13 Nov 2014 12:15:59 -0800
- Subject: Re: [google gcc-4.9] FDO build for linux kernel
- Authentication-results: sourceware.org; auth=none
- References: <CAF1bQ=TnZiWoYiy1u42qByv+Zjg+a4k6N4QUp9RYscU=1EpuTA at mail dot gmail dot com>
ok.
(the way to detect kernel build looks unpolished, but there does not
seem to be a consistent way of doing it. Some targets have kernel
specific flags ..)
On Thu, Nov 13, 2014 at 10:40 AM, Rong Xu <xur@google.com> wrote:
> Here is patch that ports our work on FDO linux kernel build support to
> gcc-4_9. With this patch, kernel will use the libgcov functions to
> dump the gcda files.
>
> This patch also enables LIPO build. But the module grouping is not
> computed online. We will use gcov-tool to do this offline.
>
> Tested with kernel FDO build, regression and google internal benchmarks.
>
> Thanks,
>
> -Rong