[llvm-commits] [PATCH] Add support for ARMFastISel to emit ELF PIC

[Jush Lu]

Ping.

The same patch is attached.

On Tue, Sep 18, 2012 at 7:18 PM, Jush Lu <jush.msn at gmail.com> wrote:

> Ping.
>
> The attachment is the same patch.
>
>
> On Tue, Sep 4, 2012 at 7:14 PM, Jush Lu <jush.msn at gmail.com> wrote:
>
>> *Hi,
>>
>> This patch adds support for ELF PIC. I know that ARMFastISel hasn’t been
>> used for ELF object files, but I think this patch will be helpful to ELF
>> support.
>>
>> This patch uses the same way which X86FastISel uses for ELF PIC codegen,
>> you can find the similar code in the “CGBR” pass which is in
>> lib/Target/X86/X86InstrInfo.cpp .
>>
>> The “ARMCGBR”  pass in my patch lowers the value of  a ELF specific
>> symbol “_GLOBAL_OFFSET_TABLE_” into a global base register , and this
>> global base register is used by ARMFastISel for ELF PIC codegen.
>>
>> Please review it ,thanks.
>>
>> Jush*
>>
>
>
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