From: chenglulu <chenglulu@loongson.cn>
To: Xi Ruoyao <xry111@xry111.site>, gcc-patches@gcc.gnu.org
Cc: i@xen0n.name, xuchenghua@loongson.cn
Subject: Re: [pushed][PATCH v2] LoongArch: Add code generation support for call36 function calls.
Date: Mon, 20 Nov 2023 09:09:04 +0800 [thread overview]
Message-ID: <bc52f7b1-5d4b-7bf1-7c4e-25d3bc112456@loongson.cn> (raw)
In-Reply-To: <2efc73688c6891980d84cd7cd0cbc66bc5283b1f.camel@xry111.site>
在 2023/11/19 上午1:24, Xi Ruoyao 写道:
> On Sat, 2023-11-18 at 16:16 +0800, chenglulu wrote:
>> Pushed to r14-5567.
>>
>> 在 2023/11/16 下午3:27, Lulu Cheng 写道:
>>> When compiling with '-mcmodel=medium', the function call is made through
>>> 'pcaddu18i+jirl' if binutils supports call36, otherwise the
>>> native implementation 'pcalau12i+jirl' is used.
>>>
>>> gcc/ChangeLog:
>>>
>>> * config.in: Regenerate.
>>> * config/loongarch/loongarch-opts.h (HAVE_AS_SUPPORT_CALL36): Define macro.
>>> * config/loongarch/loongarch.cc (loongarch_legitimize_call_address):
>>> If binutils supports call36, the function call is not split over expand.
>>> * config/loongarch/loongarch.md: Add call36 generation code.
>>> * config/loongarch/predicates.md: Likewise.
>>> * configure: Regenerate.
>>> * configure.ac: Check whether binutils supports call36.
> With this change I get some test failures with "old" Binutils 2.41:
>
> FAIL: gcc.target/loongarch/func-call-medium-1.c scan-assembler test:.*la.global\\t.*g\\n\\tjirl
> FAIL: gcc.target/loongarch/func-call-medium-1.c scan-assembler test1:.*la.global\\t.*f\\n\\tjirl
> FAIL: gcc.target/loongarch/func-call-medium-1.c scan-assembler test2:.*la.local\\t.*l\\n\\tjirl
> FAIL: gcc.target/loongarch/func-call-medium-2.c scan-assembler test:.*la.global\\t.*g\\n\\tjirl
> FAIL: gcc.target/loongarch/func-call-medium-2.c scan-assembler test1:.*la.local\\t.*f\\n\\tjirl
> FAIL: gcc.target/loongarch/func-call-medium-2.c scan-assembler test2:.*la.local\\t.*l\\n\\tjirl
> FAIL: gcc.target/loongarch/func-call-medium-3.c scan-assembler test2:.*la.local\\t.*l\\n\\tjirl
> FAIL: gcc.target/loongarch/func-call-medium-4.c scan-assembler test1:.*la.local\\t.*f\\n\\tjirl
> FAIL: gcc.target/loongarch/func-call-medium-4.c scan-assembler test2:.*la.local\\t.*l\\n\\tjirl
>
> Some strange thing is happening: with -mexplicit-relocs=auto or always I
> get pcalau12i + jirl as expected, but with -mexplicit-relocs=none I get
> "pcaddu18i $r1,%call36(g)" and jirl. This seems irony (!).
>
Thank you for the revision.
next prev parent reply other threads:[~2023-11-20 1:09 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-16 7:27 [PATCH " Lulu Cheng
2023-11-18 8:16 ` [pushed][PATCH " chenglulu
2023-11-18 17:24 ` Xi Ruoyao
2023-11-20 1:09 ` chenglulu [this message]
2023-11-20 1:51 ` Xi Ruoyao
2023-11-20 2:07 ` chenglulu
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