new file mode 100755
--- /dev/null
+++ b/runtime/syntax/sil.vim
@@ -0,0 +1,178 @@
+" This source file is part of the Swift.org open source project
+"
+" Copyright (c) 2014 - 2020 Apple Inc. and the Swift project authors
+" Licensed under Apache License v2.0 with Runtime Library Exception
+"
+" See https://swift.org/LICENSE.txt for license information
+" See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+"
+" Vim syntax file
+" Language: sil
+"
+" Vim maintainer: Emir SARI <bitigchi@me.com>
+
+if exists("b:current_syntax")
+    finish
+endif
+
+let s:keepcpo = &cpo
+set cpo&vim
+
+syn keyword silStage skipwhite nextgroup=silStages
+      \ sil_stage
+syn keyword silStages
+      \ canonical
+      \ raw
+
+syn match silIdentifier skipwhite
+      \ /@\<[A-Za-z_0-9]\+\>/
+
+syn match silConvention skipwhite
+      \ /$\?@convention/
+syn region silConvention contained contains=silConventions
+      \ start="@convention(" end=")"
+syn keyword silConventions
+      \ block
+      \ c
+      \ method
+      \ objc_method
+      \ thick
+      \ thin
+      \ witness_method
+
+syn match silFunctionType skipwhite
+      \ /@\(\<autoreleased\>\|\<callee_guaranteed\>\|\<callee_owned\>\|\<error\>\|\<guaranteed\>\|\<in\>\|\<in_constant\>\|\<in_guaranteed\>\|\<inout\>\|\<inout_aliasable\>\|\<noescape\>\|\<out\>\|\<owned\>\)/
+syn match silMetatypeType skipwhite
+      \ /@\(\<thick\>\|\<thin\>\|\<objc\>\)/
+
+" TODO: handle [tail_elems sil-type * sil-operand]
+syn region silAttribute contains=silAttributes
+      \ start="\[" end="\]"
+syn keyword silAttributes contained containedin=silAttribute
+      \ abort
+      \ deinit
+      \ delegatingself
+      \ derivedself
+      \ derivedselfonly
+      \ dynamic
+      \ exact
+      \ init
+      \ modify
+      \ mutating
+      \ objc
+      \ open
+      \ read
+      \ rootself
+      \ stack
+      \ static
+      \ strict
+      \ unknown
+      \ unsafe
+      \ var
+
+syn keyword swiftImport import skipwhite nextgroup=swiftImportModule
+syn match swiftImportModule /\<[A-Za-z_][A-Za-z_0-9]*\>/ contained nextgroup=swiftImportComponent
+syn match swiftImportComponent /\.\<[A-Za-z_][A-Za-z_0-9]*\>/ contained nextgroup=swiftImportComponent
+
+syn region swiftComment start="/\*" end="\*/" contains=swiftComment,swiftTodo
+syn region swiftLineComment start="//" end="$" contains=swiftTodo
+
+syn match swiftLineComment   /^#!.*/
+syn match swiftTypeName  /\<[A-Z][a-zA-Z_0-9]*\>/
+syn match swiftDecimal /\<[-]\?[0-9]\+\>/
+syn match swiftDecimal /\<[-+]\?[0-9]\+\>/
+
+syn match swiftTypeName /\$\*\<\?[A-Z][a-zA-Z0-9_]*\>/
+syn match swiftVarName /%\<[A-z[a-z_0-9]\+\(#[0-9]\+\)\?\>/
+
+syn keyword swiftKeyword break case continue default do else for if in static switch repeat return where while skipwhite
+
+syn keyword swiftKeyword sil internal thunk skipwhite
+syn keyword swiftKeyword public hidden private shared public_external hidden_external skipwhite
+syn keyword swiftKeyword getter setter allocator initializer enumelt destroyer globalaccessor objc skipwhite
+syn keyword swiftKeyword alloc_global alloc_stack alloc_ref alloc_ref_dynamic alloc_box alloc_existential_box alloc_value_buffer dealloc_stack dealloc_box dealloc_existential_box dealloc_ref dealloc_partial_ref dealloc_value_buffer skipwhite
+syn keyword swiftKeyword debug_value debug_value_addr skipwhite
+syn keyword swiftKeyword load load_unowned store assign mark_uninitialized mark_function_escape copy_addr destroy_addr index_addr index_raw_pointer bind_memory to skipwhite
+syn keyword swiftKeyword strong_retain strong_release strong_retain_unowned ref_to_unowned unowned_to_ref unowned_retain unowned_release load_weak store_unowned store_weak fix_lifetime autorelease_value set_deallocating is_unique is_escaping_closure skipwhite
+syn keyword swiftKeyword function_ref integer_literal float_literal string_literal global_addr skipwhite
+syn keyword swiftKeyword class_method super_method witness_method objc_method objc_super_method skipwhite
+syn keyword swiftKeyword partial_apply builtin skipwhite
+syn keyword swiftApplyKeyword apply try_apply skipwhite
+syn keyword swiftKeyword metatype value_metatype existential_metatype skipwhite
+syn keyword swiftKeyword retain_value release_value retain_value_addr release_value_addr tuple tuple_extract tuple_element_addr struct struct_extract struct_element_addr ref_element_addr skipwhite
+syn keyword swiftKeyword init_enum_data_addr unchecked_enum_data unchecked_take_enum_data_addr inject_enum_addr skipwhite
+syn keyword swiftKeyword init_existential_addr init_existential_value init_existential_metatype deinit_existential_addr deinit_existential_value open_existential_addr open_existential_box open_existential_box_value open_existential_metatype init_existential_ref open_existential_ref open_existential_value skipwhite
+syn keyword swiftKeyword upcast address_to_pointer pointer_to_address pointer_to_thin_function unchecked_addr_cast unchecked_ref_cast unchecked_ref_cast_addr ref_to_raw_pointer ref_to_bridge_object ref_to_unmanaged unmanaged_to_ref raw_pointer_to_ref skipwhite
+syn keyword swiftKeyword convert_function thick_to_objc_metatype thin_function_to_pointer objc_to_thick_metatype thin_to_thick_function unchecked_ref_bit_cast unchecked_trivial_bit_cast bridge_object_to_ref bridge_object_to_word unchecked_bitwise_cast skipwhite
+syn keyword swiftKeyword objc_existential_metatype_to_object objc_metatype_to_object objc_protocol skipwhite
+syn keyword swiftKeyword unconditional_checked_cast unconditional_checked_cast_addr unconditional_checked_cast_value skipwhite
+syn keyword swiftKeyword cond_fail skipwhite
+syn keyword swiftKeyword unreachable return throw br cond_br switch_value select_enum select_enum_addr select_value switch_enum switch_enum_addr dynamic_method_br checked_cast_br checked_cast_value_br checked_cast_addr_br skipwhite
+syn keyword swiftKeyword project_box project_existential_box project_value_buffer project_block_storage init_block_storage_header copy_block mark_dependence skipwhite
+
+syn keyword swiftTypeDefinition class extension protocol struct typealias enum skipwhite nextgroup=swiftTypeName
+syn region swiftTypeAttributes start="\[" end="\]" skipwhite contained nextgroup=swiftTypeName
+syn match swiftTypeName /\<[A-Za-z_][A-Za-z_0-9\.]*\>/ contained nextgroup=swiftTypeParameters
+
+syn region swiftTypeParameters start="<" end=">" skipwhite contained
+
+syn keyword swiftFuncDefinition func skipwhite nextgroup=swiftFuncAttributes,swiftFuncName,swiftOperator
+syn region swiftFuncAttributes start="\[" end="\]" skipwhite contained nextgroup=swiftFuncName,swiftOperator
+syn match swiftFuncName /\<[A-Za-z_][A-Za-z_0-9]*\>/ skipwhite contained nextgroup=swiftTypeParameters
+syn keyword swiftFuncKeyword subscript init destructor nextgroup=swiftTypeParameters
+
+syn keyword swiftVarDefinition var skipwhite nextgroup=swiftVarName
+syn keyword swiftVarDefinition let skipwhite nextgroup=swiftVarName
+syn match swiftVarName /\<[A-Za-z_][A-Za-z_0-9]*\>/ skipwhite contained
+
+syn keyword swiftDefinitionModifier static
+
+syn match swiftImplicitVarName /\$\<[A-Za-z_0-9]\+\>/
+
+hi def link swiftImport Include
+hi def link swiftImportModule Title
+hi def link swiftImportComponent Identifier
+hi def link swiftApplyKeyword Statement
+hi def link swiftKeyword Statement
+hi def link swiftTypeDefinition Define
+hi def link swiftTypeName Type
+hi def link swiftTypeParameters Special
+hi def link swiftTypeAttributes PreProc
+hi def link swiftFuncDefinition Define
+hi def link swiftDefinitionModifier Define
+hi def link swiftFuncName Function
+hi def link swiftFuncAttributes PreProc
+hi def link swiftFuncKeyword Function
+hi def link swiftVarDefinition Define
+hi def link swiftVarName Identifier
+hi def link swiftImplicitVarName Identifier
+hi def link swiftIdentifierKeyword Identifier
+hi def link swiftTypeDeclaration Delimiter
+hi def link swiftBoolean Boolean
+hi def link swiftString String
+hi def link swiftInterpolation Special
+hi def link swiftComment Comment
+hi def link swiftLineComment Comment
+hi def link swiftDecimal Number
+hi def link swiftHex Number
+hi def link swiftOct Number
+hi def link swiftBin Number
+hi def link swiftOperator Function
+hi def link swiftChar Character
+hi def link swiftLabel Label
+hi def link swiftNew Operator
+
+hi def link silStage Special
+hi def link silStages Type
+hi def link silConvention Special
+hi def link silConventionParameter Special
+hi def link silConventions Type
+hi def link silIdentifier Identifier
+hi def link silFunctionType Special
+hi def link silMetatypeType Special
+hi def link silAttribute PreProc
+
+let b:current_syntax = "sil"
+
+let &cpo = s:keepcpo
+unlet s:keepcpo