patch 9.1.0906: filetype: Nvidia PTX files are not recognized

Problem:  filetype: Nvidia PTX files are not recognized
Solution: detect '*.ptx' files as ptx filetype (Yinzuo Jiang)

Reference: https://docs.nvidia.com/cuda/parallel-thread-execution/

closes: #16171

Signed-off-by: Yinzuo Jiang <jiangyinzuo@foxmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

.github/MAINTAINERS

@@ -249,6 +249,7 @@ runtime/ftplugin/postscr.vim		@mrdubya
 runtime/ftplugin/prisma.vim		@ribru17
 runtime/ftplugin/ps1.vim		@heaths
 runtime/ftplugin/ps1xml.vim		@heaths
+runtime/ftplugin/ptx.vim		@jiangyinzuo
 runtime/ftplugin/purescript.vim		@ribru17
 runtime/ftplugin/pymanifest.vim		@ObserverOfTime
 runtime/ftplugin/python.vim		@tpict
@@ -556,6 +557,7 @@ runtime/syntax/prolog.vim		@XVilka
 runtime/syntax/ps1.vim			@heaths
 runtime/syntax/ps1xml.vim		@heaths
 runtime/syntax/psl.vim			@danielkho
+runtime/syntax/ptx.vim			@jiangyinzuo
 runtime/syntax/pymanifest.vim		@ObserverOfTime
 runtime/syntax/qb64.vim			@dkearns
 runtime/syntax/qml.vim			@ChaseKnowlden

runtime/filetype.vim

@@ -1976,6 +1976,10 @@ au BufNewFile,BufRead *.pk			setf poke
 " Protocols
 au BufNewFile,BufRead */etc/protocols		setf protocols
 
+" Nvidia PTX (Parallel Thread Execution)
+" See https://docs.nvidia.com/cuda/parallel-thread-execution/
+au BufNewFile,BufRead *.ptx			setf ptx
+
 " Purescript
 au BufNewFile,BufRead *.purs			setf purescript
 

runtime/ftplugin/ptx.vim

@@ -0,0 +1,16 @@
+" Vim filetype plugin file
+" Language:	Nvidia PTX (Parellel Thread Execution)
+" Maintainer:	Yinzuo Jiang <jiangyinzuo@foxmail.com>
+" Last Change:	2024-12-05
+
+if exists("b:did_ftplugin")
+  finish
+endif
+
+let b:did_ftplugin = 1
+
+" Comments in PTX follow C/C++ syntax
+" See: https://docs.nvidia.com/cuda/parallel-thread-execution/#syntax
+setlocal commentstring=//\ %s
+
+let b:undo_ftplugin = 'setl commentstring<'

runtime/syntax/ptx.vim

@@ -0,0 +1,52 @@
+" Vim syntax file
+" Language: Nvidia PTX (Parallel Thread Execution)
+" Maintainer: Yinzuo Jiang <jiangyinzuo@foxmail.com>
+" Latest Revision: 2024-12-05
+
+if exists("b:current_syntax")
+  finish
+endif
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+syntax iskeyword .,_,a-z,48-57
+
+" https://docs.nvidia.com/cuda/parallel-thread-execution/#directives
+syntax keyword ptxFunction .entry .func
+syntax keyword ptxDirective .branchtargets .file .loc .secion .maxnctapersm .maxnreg .minnctapersm .noreturn .pragma .reqntid .target .version .weak
+syntax keyword ptxOperator .address_size .alias .align .callprototype .calltargets
+syntax keyword ptxStorageClass .common .const .extern .global .local .param .reg .sreg .shared .tex .visible
+syntax keyword ptxType .explicitcluster .maxclusterrank .reqnctapercluster
+
+" https://docs.nvidia.com/cuda/parallel-thread-execution/#fundamental-types
+" signed integer
+syntax keyword ptxType .s8 .s16 .s32 .s64
+" unsigned integer
+syntax keyword ptxType .u8 .u16 .u32 .u64
+" floating-point
+syntax keyword ptxType .f16 .f16x2 .f32 .f64
+" bits (untyped)
+syntax keyword ptxType .b8 .b16 .b32 .b64 .b128
+" predicate
+syntax keyword ptxType .pred
+
+" https://docs.nvidia.com/cuda/parallel-thread-execution/#instruction-statements
+syntax keyword ptxStatement ret
+
+syntax region  ptxCommentL start="//" skip="\\$" end="$" keepend
+syntax region ptxComment matchgroup=ptxCommentStart start="/\*" end="\*/" extend
+
+hi def link ptxFunction Function
+hi def link ptxDirective Keyword
+hi def link ptxOperator Operator
+hi def link ptxStorageClass StorageClass
+hi def link ptxType Type
+hi def link ptxStatement Statement
+
+hi def link ptxCommentL ptxComment
+hi def link ptxCommentStart ptxComment
+hi def link ptxComment Comment
+
+let &cpo = s:cpo_save
+unlet s:cpo_save

src/testdir/test_filetype.vim

@@ -608,6 +608,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     ps1xml: ['file.ps1xml'],
     psf: ['file.psf'],
     psl: ['file.psl'],
+    ptx: ['file.ptx'],
     pug: ['file.pug'],
     puppet: ['file.pp'],
     purescript: ['file.purs'],

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    906,
 /**/
     905,
 /**/