[llvm-commits] [PATCH 3/4] Profile metadata: runtime support

[Alastair Murray]

Hi all,

Ping on this patch!  (Sorry!)

The patch has no effect at runtime unless the LLVMPROF_OUTPUT 
environment variable is set.

Are there concerns about how it works on Windows?  I haven't tested that 
but the Windows documentation advises against using getenv().

Regards,
Alastair.

On 18/08/12 09:46, Alastair Murray wrote:
> Hello all,
>
> Please review the attached patch.
>
> This is the second of four patches to support setting branch weight
> metadata by profiling.  It does not depend on the previous patches.
>
> This small patch allows the profile data file name to be specified by
> the LLVMPROF_OUTPUT environment variable.  This allows parallel make for
> profiling code (to come in patch #4), without it the are file collisions
> as each parallel run uses the default file name.
>
> There is already code in the runtime library to specify the output file
> name via the command line, but this only works for programs which
> already process argc/argv.  This patch builds on that support.
>
> Regards,
> Alastair Murray