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Re: [PATCH][AARCH64] Support tail indirect function call

From: Jiong Wang <jiong dot wang at arm dot com>
To: GCC Patches <gcc-patches at gcc dot gnu dot org>
Date: Wed, 02 Apr 2014 12:04:41 +0100
Subject: Re: [PATCH][AARCH64] Support tail indirect function call
Authentication-results: sourceware.org; auth=none
References: <532854A3 dot 8040007 at arm dot com>

^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

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- Re: [PATCH][AARCH64] Support tail indirect function call
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