| Message ID | 94930db9-831d-432c-9d3a-337dba678f09@baylibre.com |
|---|---|
| State | New |
| Headers | show |
| Series | nvptx.opt: Add sm_89 and sm_90a to -march-map= | expand |
Hi Tobias! On 2024-01-20T10:57:29+0100, Tobias Burnus <tburnus@baylibre.com> wrote: > Stumbled over this as we recently got a sm_89 card. > > -march-map= is mostly a future proof method for user to ensure to use > always the best code gen for a specific card - without needing to know > which GCC version added support for what --march=sm_... (or -misa=sm_... > - those are aliases). > > sm_89 was added in CUDA 11.8 (ptx isa 7.8) and sm_90a in CUDA 12.0 (ptx > isa 8.0) but that's just FYI as -march-map=sm_xx, xx >= 80 is mapping to > -march=sm_80 and implies -mptx=7.0 (i.e. ptx isa 7.0, added in CUDA > 11.0); hence, any CUDA 11.0+ will do. > > OK for mainline? OK, thanks. Grüße Thomas > nvptx.opt: Add sm_89 and sm_90a to -march-map= > > The -march-map= options maps the compute capability to the closest > lower compute capability that has been implemented; for sm_89 and > sm_90a, that were previously missing, that's currently -march=sm_80 > alias -misa=sm_80. > > gcc/ChangeLog: > > * config/nvptx/nvptx.opt (march-map=): Add sm_89 and sm_90a. > > Signed-off-by: Tobias Burnus <tburnus@baylibre.com> > > diff --git a/gcc/config/nvptx/nvptx.opt b/gcc/config/nvptx/nvptx.opt > index 09d75fca037..deb006663d7 100644 > --- a/gcc/config/nvptx/nvptx.opt > +++ b/gcc/config/nvptx/nvptx.opt > @@ -108,9 +108,15 @@ Target RejectNegative Alias(misa=,sm_80) > march-map=sm_87 > Target RejectNegative Alias(misa=,sm_80) > > +march-map=sm_89 > +Target RejectNegative Alias(misa=,sm_80) > + > march-map=sm_90 > Target RejectNegative Alias(misa=,sm_80) > > +march-map=sm_90a > +Target RejectNegative Alias(misa=,sm_80) > + > Enum > Name(ptx_version) Type(int) > Known PTX ISA versions (for use with the -mptx= option):
nvptx.opt: Add sm_89 and sm_90a to -march-map= The -march-map= options maps the compute capability to the closest lower compute capability that has been implemented; for sm_89 and sm_90a, that were previously missing, that's currently -march=sm_80 alias -misa=sm_80. gcc/ChangeLog: * config/nvptx/nvptx.opt (march-map=): Add sm_89 and sm_90a. Signed-off-by: Tobias Burnus <tburnus@baylibre.com> diff --git a/gcc/config/nvptx/nvptx.opt b/gcc/config/nvptx/nvptx.opt index 09d75fca037..deb006663d7 100644 --- a/gcc/config/nvptx/nvptx.opt +++ b/gcc/config/nvptx/nvptx.opt @@ -108,9 +108,15 @@ Target RejectNegative Alias(misa=,sm_80) march-map=sm_87 Target RejectNegative Alias(misa=,sm_80) +march-map=sm_89 +Target RejectNegative Alias(misa=,sm_80) + march-map=sm_90 Target RejectNegative Alias(misa=,sm_80) +march-map=sm_90a +Target RejectNegative Alias(misa=,sm_80) + Enum Name(ptx_version) Type(int) Known PTX ISA versions (for use with the -mptx= option):