r174349 - Driver and option support for -gsplit-dwarf. This is a part of

[Eric Christopher]

On Mon, Feb 4, 2013 at 11:47 PM, Chandler Carruth <chandlerc at google.com>wrote:

>
> On Mon, Feb 4, 2013 at 11:29 PM, Eric Christopher <echristo at gmail.com>wrote:
>
>> +  // -gsplit-dwarf should turn on -g and enable the backend dwarf
>> +  // splitting and extraction.
>> +  if (Args.hasArg(options::OPT_gsplit_dwarf)) {
>> +    CmdArgs.push_back("-g");
>> +    CmdArgs.push_back("-backend-option");
>> +    CmdArgs.push_back("-split-dwarf=Enable");
>>
>
> This seems a strange flag spelling... Are there values other than
> "Enable"? I half expected just the standard binary '-split-debug' or
> nothing of CC1 options...
>

Yeah, I put it as a tri-state Enable, Disable and Default so that we could
enable it easier by default for certain targets. In retrospect I'm not sure
if we're ever going to end up doing that for linux, but it didn't cause me
much pain to do it this way in the first place.

 -eric
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