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Re: [AArch64] Implement -fpic for -mcmodel=small
- From: Marcus Shawcroft <marcus dot shawcroft at gmail dot com>
- To: Jiong Wang <jiong dot wang at arm dot com>
- Cc: gcc-patches <gcc-patches at gnu dot org>
- Date: Tue, 23 Jun 2015 12:30:33 +0100
- Subject: Re: [AArch64] Implement -fpic for -mcmodel=small
- Authentication-results: sourceware.org; auth=none
- References: <n99mw0zwmz7 dot fsf at arm dot com>
On 20 May 2015 at 11:21, Jiong Wang <jiong.wang@arm.com> wrote:
> gcc/
> * config/aarch64/aarch64.md: (ldr_got_small_<mode>): Support new GOT relocation
> modifiers.
> (ldr_got_small_sidi): Ditto.
> * config/aarch64/iterators.md (got_modifier): New mode iterator.
> * config/aarch64/aarch64-otps.h (aarch64_code_model): New model.
> * config/aarch64/aarch64.c (aarch64_load_symref_appropriately): Support -fpic.
> (aarch64_rtx_costs): Add costs for new instruction sequences.
> (initialize_aarch64_code_model): Initialize new model.
> (aarch64_classify_symbol): Recognize new model.
> (aarch64_asm_preferred_eh_data_format): Support new model.
> (aarch64_load_symref_appropriately): Generate new instruction sequences for -fpic.
> (TARGET_USE_PSEUDO_PIC_REG): New definition.
> (aarch64_use_pseudo_pic_reg): New function.
>
> gcc/testsuite/
> * gcc.target/aarch64/pic-small.c: New testcase.
Rather than thread tests against aarch64_cmodel throughout the
existing code can we instead extend classify_symbol with a new symbol
classification?
Cheers
/Marcus