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* [Bug target/97436] New: [nvptx] -m32 support
@ 2020-10-15 7:57 vries at gcc dot gnu.org
2020-10-15 9:08 ` [Bug target/97436] " tschwinge at gcc dot gnu.org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: vries at gcc dot gnu.org @ 2020-10-15 7:57 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97436
Bug ID: 97436
Summary: [nvptx] -m32 support
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: vries at gcc dot gnu.org
Target Milestone: ---
The nvptx port has an -m32 switch:
...
m32
Target Report RejectNegative InverseMask(ABI64)
Generate code for a 32-bit ABI.
...
but the default is -m64:
...
#define TARGET_DEFAULT_TARGET_FLAGS MASK_ABI64
...
[ which perhaps should be related to the host being -m64 or -m32? ]
We're not building -m32/-m64 multilibs, so it seems we're not building the -m32
part by default.
I don't know if the -m32 path was ever tested, either in standalone or
offloading setting.
But since the switch is there, we should either build and test or deprecate it.
I'm not yet sure what would be a working setup in terms of card/drivers/OS.
At least for linux, at cuda 7.5 it's mentioned that: "Support for developing
and running 32-bit CUDA and OpenCL applications on 64-bit x86 Linux platforms
is deprecated".
And with cuda 8.0, I get:
...
$ ~/cuda/8.0/bin/nvcc ~/hello.cu -m32
nvcc warning : Compiling in the 32-bit mode when the host compiler targets x86
or x86_64 is no longer supported on Linux
...
^ permalink raw reply [flat|nested] 4+ messages in thread* [Bug target/97436] [nvptx] -m32 support 2020-10-15 7:57 [Bug target/97436] New: [nvptx] -m32 support vries at gcc dot gnu.org @ 2020-10-15 9:08 ` tschwinge at gcc dot gnu.org 2020-10-15 13:26 ` [Bug target/97436] [nvptx] Remove " cvs-commit at gcc dot gnu.org 2020-10-15 13:34 ` vries at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: tschwinge at gcc dot gnu.org @ 2020-10-15 9:08 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97436 Thomas Schwinge <tschwinge at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |tschwinge at gcc dot gnu.org Last reconfirmed| |2020-10-15 Ever confirmed|0 |1 Status|UNCONFIRMED |NEW --- Comment #1 from Thomas Schwinge <tschwinge at gcc dot gnu.org> --- We originally had been asked to support OpenACC/nvptx offloading with both 64-bit x86_64 and 32-bit x86, but the idea of a 32-bit variant got scrapped very early in the project. I don't think we've ever tested that, and it doesn't serve any practical use. I suggest to remove. See also PR65099. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug target/97436] [nvptx] Remove -m32 support 2020-10-15 7:57 [Bug target/97436] New: [nvptx] -m32 support vries at gcc dot gnu.org 2020-10-15 9:08 ` [Bug target/97436] " tschwinge at gcc dot gnu.org @ 2020-10-15 13:26 ` cvs-commit at gcc dot gnu.org 2020-10-15 13:34 ` vries at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: cvs-commit at gcc dot gnu.org @ 2020-10-15 13:26 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97436 --- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Tom de Vries <vries@gcc.gnu.org>: https://gcc.gnu.org/g:34af17c0164f3138df094b144c7f74c2d1805444 commit r11-3953-g34af17c0164f3138df094b144c7f74c2d1805444 Author: Tom de Vries <tdevries@suse.de> Date: Thu Oct 15 11:37:43 2020 +0200 [nvptx] Remove -m32 The nvptx port has an -m32 option, but it's not clear whether this was ever build/tested/used. Don't expose to user anymore. Tested on nvptx. gcc/ChangeLog: 2020-10-15 Tom de Vries <tdevries@suse.de> PR target/97436 * config/nvptx/nvptx.opt (m32): Comment out. * doc/invoke.texi (NVPTX options): Remove -m32. gcc/testsuite/ChangeLog: 2020-10-15 Tom de Vries <tdevries@suse.de> PR target/97436 * gcc.target/nvptx/atomic_fetch-3.c: Remove. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug target/97436] [nvptx] Remove -m32 support 2020-10-15 7:57 [Bug target/97436] New: [nvptx] -m32 support vries at gcc dot gnu.org 2020-10-15 9:08 ` [Bug target/97436] " tschwinge at gcc dot gnu.org 2020-10-15 13:26 ` [Bug target/97436] [nvptx] Remove " cvs-commit at gcc dot gnu.org @ 2020-10-15 13:34 ` vries at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: vries at gcc dot gnu.org @ 2020-10-15 13:34 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97436 Tom de Vries <vries at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |FIXED Status|NEW |RESOLVED Target Milestone|--- |11.0 --- Comment #3 from Tom de Vries <vries at gcc dot gnu.org> --- Updated release notes, marking resolved-fixed. ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2020-10-15 13:34 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2020-10-15 7:57 [Bug target/97436] New: [nvptx] -m32 support vries at gcc dot gnu.org 2020-10-15 9:08 ` [Bug target/97436] " tschwinge at gcc dot gnu.org 2020-10-15 13:26 ` [Bug target/97436] [nvptx] Remove " cvs-commit at gcc dot gnu.org 2020-10-15 13:34 ` vries at gcc dot gnu.org
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