Hi,
Update nvptx documentation:
- Use meaningful terms: "PTX ISA target architecture" and "PTX ISA version".
- Remove invalid claim that "ISA strings must be lower-case".
- Add missing sm_xx entries.
- Fix default ISA.
- Add march, copying misa doc.
- Declare misa an march alias.
- Add march-map.
- Fix "for given the specified" typo.
Any comments?
Thanks,
- Tom
[nvptx, doc] Update misa and mptx, add march and march-map
gcc/ChangeLog:
2022-03-29 Tom de Vries <tdevr...@suse.de>
* doc/invoke.texi (misa, mptx): Update.
(march, march-map): Add.
---
gcc/doc/invoke.texi | 27 ++++++++++++++++++++-------
1 file changed, 20 insertions(+), 7 deletions(-)
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 554e04ecbf3a..eb2fe959e600 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -27540,18 +27540,31 @@ These options are defined for Nvidia PTX:
Ignored, but preserved for backward compatibility. Only 64-bit ABI is
supported.
-@item -misa=@var{ISA-string}
+@item -march=@var{architecture-string}
@opindex march
-Generate code for given the specified PTX ISA (e.g.@: @samp{sm_35}). ISA
-strings must be lower-case. Valid ISA strings include @samp{sm_30} and
-@samp{sm_35}. The default ISA is sm_35.
+Generate code for the specified PTX ISA target architecture
+(e.g.@: @samp{sm_35}). Valid architecture strings are @samp{sm_30},
+@samp{sm_35}, @samp{sm_53} @samp{sm_70}, @samp{sm_75} and
+@samp{sm_80}. The default target architecture is sm_30.
+
+@item -misa=@var{architecture-string}
+@opindex misa
+Alias of @option{-march=}.
+
+@item -march-map=@var{architecture-string}
+@opindex march
+Select the closest available @option{-march=} value that is not more
+capable. For instance, for @option{-march-map=sm_50} select
+@option{-march=sm_35}, and for @option{-march-map=sm_53} select
+@option{-march=sm_53}.
@item -mptx=@var{version-string}
@opindex mptx
-Generate code for given the specified PTX version (e.g.@: @samp{7.0}).
+Generate code for the specified PTX ISA version (e.g.@: @samp{7.0}).
Valid version strings include @samp{3.1}, @samp{6.0}, @samp{6.3}, and
-@samp{7.0}. The default PTX version is 6.0, unless a higher minimal
-version is required for specified PTX ISA via option @option{-misa=}.
+@samp{7.0}. The default PTX version is 6.0, unless a higher version
+is required for specified PTX ISA target architecture via option
+@option{-march=}.
@item -mmainkernel
@opindex mmainkernel
