[PATCH] Add initial version of rtl.vim syntax file.

[Martin Liška <mliska at suse dot cz>]

Hi.

This is equivalent of gimple.vim file. I'm aware of not full coverage of RTL
instructions, but hope it's a good start point.

Screenshots:

https://drive.google.com/open?id=14y-Hca2hf1gyWDfHaht6Wjv-Btf3Bdvl
https://drive.google.com/open?id=1LiqsJq2ng-aeKsvw3PhUnDjLWh54Y1Vc

Ready for trunk?
Thanks,
Martin

contrib/ChangeLog:

2018-06-12  Martin Liska  <mliska@suse.cz>

	* rtl.vim: New file.
---
 contrib/rtl.vim | 55 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 contrib/rtl.vim


diff --git a/contrib/rtl.vim b/contrib/rtl.vim
new file mode 100644
index 00000000000..c584b56e3f3
--- /dev/null
+++ b/contrib/rtl.vim
@@ -0,0 +1,55 @@
+" Syntax highlighting rules for RTL dump files (for Vim).
+"
+" Copyright (C) 2018 Free Software Foundation, Inc.
+"
+" This script is free software; you can redistribute it and/or modify
+" it under the terms of the GNU General Public License as published by
+" the Free Software Foundation; either version 3, or (at your option)
+" any later version
+"
+" For more instructions please see gimple.vim file in the same folder.
+
+
+" Do not continue, if syntax is already enabled in current buffer.
+if exists("b:current_syntax")
+    finish
+endif
+
+" General-purpose comments.
+syn match   rtlComment          ";;.*$"
+
+syn keyword rtlInstruction      insn parallel_insn set mem simple_return plus
+                                \ clobber parallel compare minus xor subreg
+                                \ ashift ashiftrt lshiftrt symbol_reg
+                                \ zero_extend symbol_ref label_ref call
+                                \ vec_merge vec_duplicate vec_concat
+syn keyword rtlConditional      jump_insn  if_then_else call_insn eq
+syn keyword rtlNote             note barrier code_label
+syn keyword rtlVariableLoation  var_location
+syn keyword rtlExpressionList   expr_list
+syn keyword rtlPcRegister       pc
+
+" String literals
+syn region  rtlString           start=/\v"/ skip=/\v\\./ end=/\v"/
+
+syn match   rtlNoteInsn         "NOTE_INSN_[A-Z_]*"
+syn match   rtlIntegerConstant  "\vconst_int -?\d+"
+syn match   rtlFloatConstant    "\vconst_double:[A-Z]+ -?\d*\.\d+(e\+\d+)?"
+syn match   rtlRegister         "\vreg(\/[a-z])?:[A-Z0-9]+ \d+ [a-z0-9]+"
+syn match   rtlLocation         /\v"[^"]*":\d+/
+
+hi def link rtlInstruction      Statement
+hi def link rtlConditional      Conditional
+hi def link rtlNote             Debug
+hi def link rtlNoteInsn         Debug
+hi def link rtlIntegerConstant  Number
+hi def link rtlFloatConstant    Number
+hi def link rtlRegister         Type
+hi def link rtlPcRegister       Type
+hi def link rtlVariableLoation  Debug
+hi def link rtlExpressionList   Debug
+hi def link rtlComment          Comment
+hi def link rtlLocation         Debug
+hi def link rtlString           String
+
+let b:current_syntax = "rtl"