https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104283
Bug ID: 104283
Summary: nvptx-none needs more user friendly architecture
handling
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: xw111luoye at gmail dot com
Target Milestone: ---
x86_64-pc-linux-gnu-accel-nvptx-none-gcc needs both -misa and -mptx to select a
specific target.
When I use OpenMP offload.
-foffload-options=nvptx-none="-misa=sm_80"
I got error
```
ptxas /tmp/ccW7wYQT.o, line 3; error : PTX .version 3.1 does not support
.target sm_80
ptxas /tmp/ccW7wYQT.o, line 2622; warning : Instruction 'shfl' without '.sync'
may produce unpredictable results on sm_70 and later architectures
```
Then I have to get it through with
-foffload-options=nvptx-none="-misa=sm_80 -mptx=7.0"
I think GPU users know what sm_80 is but they rarely know PTX.
Can we -mptx default to highest -misa selection supports?
Or introduce something like -march=sm_80 and map it to appropriate -misa and
-mptx.
Simplify the need of options is much appreciated.
