[PING^4] nvptx: forward '-v' command-line option to assembler, linker
Commit Message
Hi Tom!
Ping.
Grüße
Thomas
On 2022-07-13T10:41:23+0200, I wrote:
> Hi Tom!
>
> Ping.
>
>
> Grüße
> Thomas
>
>
> On 2022-07-05T16:58:54+0200, I wrote:
>> Hi Tom!
>>
>> Ping.
>>
>>
>> Grüße
>> Thomas
>>
>>
>> On 2022-06-07T17:41:16+0200, I wrote:
>>> Hi!
>>>
>>> On 2022-05-30T09:06:21+0200, Tobias Burnus <tobias@codesourcery.com> wrote:
>>>> On 29.05.22 22:49, Thomas Schwinge wrote:
>>>>> Not sure if that's what you had in mind, but what do you think about the
>>>>> attached "nvptx: forward '-v' command-line option to assembler, linker"?
>>>>> OK to push to GCC master branch (after merging
>>>>> <https://github.com/MentorEmbedded/nvptx-tools/pull/37>
>>>>> "Put '-v' verbose output onto stderr instead of stdout")?
>>>>
>>>> I was mainly thinking of some way to have it available — which
>>>> '-foffload-options=-Wa,-v' already permits on the GCC side. (Once the
>>>> nvptx-tools patch actually makes use of the '-v'.)
>>>
>>> (Merged a week ago.)
>>>
>>>> If I understand your patch correctly, this patch now causes 'gcc -v' to
>>>> imply 'gcc -v -Wa,-v'. I think that's okay, since 'gcc -v' already
>>>> outputs a lot of lines and those lines can be helpful to understand what
>>>> happens and what not.
>>>
>>> ACK.
>>>
>>>> Tom, your thoughts on this?
>>>
>>> Ping.
>>>
>>>
>>> Grüße
>>> Thomas
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From 17c35607d4927299b0c4bd19dd6fd205c85c4a4b Mon Sep 17 00:00:00 2001
From: Thomas Schwinge <thomas@codesourcery.com>
Date: Sun, 29 May 2022 22:31:43 +0200
Subject: [PATCH] nvptx: forward '-v' command-line option to assembler, linker
For example, for offloading compilation with '-save-temps -v', before vs. after
word-diff then looks like:
[...]
[...]/build-gcc-offload-nvptx-none/gcc/as {+-v -v+} -o ./a.xnvptx-none.mkoffload.o ./a.xnvptx-none.mkoffload.s
{+Verifying sm_30 code with sm_35 code generation.+}
{+ ptxas -c -o /dev/null ./a.xnvptx-none.mkoffload.o --gpu-name sm_35 -O0+}
[...]
[...]/build-gcc-offload-nvptx-none/gcc/collect2 {+-v -v+} -o ./a.xnvptx-none.mkoffload [...] @./a.xnvptx-none.mkoffload.args.1 -lgomp -lgcc -lc -lgcc
{+collect2 version 12.0.1 20220428 (experimental)+}
{+[...]/build-gcc-offload-nvptx-none/gcc/collect-ld -v -v -o ./a.xnvptx-none.mkoffload [...] ./a.xnvptx-none.mkoffload.o -lgomp -lgcc -lc -lgcc+}
{+Linking ./a.xnvptx-none.mkoffload.o as 0+}
{+trying lib libc.a+}
{+trying lib libgcc.a+}
{+trying lib libgomp.a+}
{+Resolving abort+}
{+Resolving acc_on_device+}
{+Linking libgomp.a::oacc-init.o/ as 1+}
{+Linking libc.a::lib_a-abort.o/ as 2+}
[...]
(This depends on <https://github.com/MentorEmbedded/nvptx-tools/pull/37>
"Put '-v' verbose output onto stderr instead of stdout".)
gcc/
* config/nvptx/nvptx.h (ASM_SPEC, LINK_SPEC): Define.
---
gcc/config/nvptx/nvptx.h | 7 +++++++
1 file changed, 7 insertions(+)
@@ -27,6 +27,13 @@
/* Run-time Target. */
+/* Assembler supports '-v' option; handle similar to
+ '../../gcc.cc:asm_options', 'HAVE_GNU_AS'. */
+#define ASM_SPEC "%{v}"
+
+/* Linker supports '-v' option. */
+#define LINK_SPEC "%{v}"
+
#define STARTFILE_SPEC "%{mmainkernel:crt0.o}"
#define TARGET_CPU_CPP_BUILTINS() nvptx_cpu_cpp_builtins ()
--
2.25.1