[PATCH][AARCH64] Support tail indirect function call

[Jiong Wang]

^Ping...

ok for stage 1?

Regards,
Jiong

On 02/04/14 12:04, Jiong Wang wrote:
> ^Ping...
>
> Regards,
> Jiong
>
> On 18/03/14 14:13, Jiong Wang wrote:
>> Current, indirect function call prevents tail-call optimization on 
>> AArch64.
>>
>> This patch adapt the fix for PR arm/19599 to AArch64.
>>
>> Is it ok for next stage 1?
>>
>> Thanks.
>>
>> -- Jiong
>>
>> gcc/
>>
>>       * config/aarch64/predicates.md (aarch64_call_insn_operand): New
>> predicate.
>>       * config/aarch64/constraints.md ("Ucs", "Usf"):  New constraints.
>>       * config/aarch64/aarch64.md (*sibcall_insn, *sibcall_value_insn):
>> Adjust for
>>       tailcalling through registers.
>>       * config/aarch64/aarch64.h (enum reg_class): New caller save
>> register class.
>>       (REG_CLASS_NAMES): Likewise.
>>       (REG_CLASS_CONTENTS): Likewise.
>>       * config/aarch64/aarch64.c (aarch64_function_ok_for_sibcall): 
>> Allow
>> tailcalling
>>       without decls.
>>
>> gcc/testsuite
>>
>>       *gcc.target/aarch64/tail-indirect-call.c: New test.
>

-- 
Jiong