diff --git a/runtime/syntax/masm.vim b/runtime/syntax/masm.vim
index 1711601..bb3c968 100644
--- a/runtime/syntax/masm.vim
+++ b/runtime/syntax/masm.vim
@@ -2,14 +2,11 @@
 " Language:	Microsoft Macro Assembler (80x86)
 " Orig Author:	Rob Brady <robb@datatone.com>
 " Maintainer:	Wu Yongwei <wuyongwei@gmail.com>
-" Last Change:	$Date: 2012/02/04 12:45:39 $
-" $Revision: 1.46 $
+" Last Change:	$Date: 2013/11/13 11:49:24 $
+" $Revision: 1.48 $
 
-" For version 5.x: Clear all syntax items
-" For version 6.x: Quit when a syntax file was already loaded
-if version < 600
-  syntax clear
-elseif exists("b:current_syntax")
+" Quit when a syntax file was already loaded
+if exists("b:current_syntax")
   finish
 endif
 
@@ -194,6 +191,10 @@
 syn keyword masmRegister	R8W R9W R10W R11W R12W R13W R14W R15W
 syn keyword masmRegister	R8B R9B R10B R11B R12B R13B R14B R15B
 
+" SSE/AVX registers
+syn match   masmRegister	"\(X\|Y\)MM[0-9]\>"
+syn match   masmRegister	"\(X\|Y\)MM1[0-5]\>"
+
 " Instruction prefixes
 syn keyword masmOpcode		LOCK REP REPE REPNE REPNZ REPZ
 
@@ -302,50 +303,69 @@
 syn keyword masmOpcode		HADDPS HSUBPS HADDPD HSUBPD
 syn keyword masmOpcode		MOVSHDUP MOVSLDUP MOVDDUP MONITOR MWAIT
 
+" SSSE3 opcodes (Core and later)
+syn keyword masmOpcode		PSIGNB PSIGNW PSIGND PABSB PABSW PABSD
+syn keyword masmOpcode		PALIGNR PSHUFB PMULHRSW PMADDUBSW
+syn keyword masmOpcode		PHSUBW PHSUBD PHSUBSW PHADDW PHADDD PHADDSW
+
+" SSE 4.1 opcodes (Penryn and later)
+syn keyword masmOpcode		MPSADBW PHMINPOSUW PMULDQ PMULLD DPPS DPPD
+syn keyword masmOpcode		BLENDPS BLENDPD BLENDVPS BLENDVPD
+syn keyword masmOpcode		PBLENDVB PBLENDW
+syn keyword masmOpcode		PMINSB PMAXSB PMINSD PMAXSD
+syn keyword masmOpcode		PMINUW PMAXUW PMINUD PMAXUD
+syn keyword masmOpcode		ROUNDPS ROUNDSS ROUNDPD ROUNDSD
+syn keyword masmOpcode		INSERTPS PINSRB PINSRD PINSRQ
+syn keyword masmOpcode		EXTRACTPS PEXTRB PEXTRD PEXTRQ
+syn keyword masmOpcode		PMOVSXBW PMOVZXBW PMOVSXBD PMOVZXBD
+syn keyword masmOpcode		PMOVSXBQ PMOVZXBQ PMOVSXWD PMOVZXWD
+syn keyword masmOpcode		PMOVSXWQ PMOVZXWQ PMOVSXDQ PMOVZXDQ
+syn keyword masmOpcode		PTEST PCMPEQQ PACKUSDW MOVNTDQA
+
+" SSE 4.2 opcodes (Nehalem and later)
+syn keyword masmOpcode		PCMPESTRI PCMPESTRM PCMPISTRI PCMPISTRM PCMPGTQ
+syn keyword masmOpcode		CRC32 POPCNT LZCNT
+
+" AES-NI (Westmere (2010) and later)
+syn keyword masmOpcode		AESENC AESENCLAST AESDEC AESDECLAST
+syn keyword masmOpcode		AESKEYGENASSIST AESIMC PCLMULQDQ
+
+" AVX (Sandy Bridge (2011) and later)
+syn keyword masmOpcode		VBROADCASTSS VBROADCASTSD VBROADCASTF128
+syn keyword masmOpcode		VINSERTF128 VEXTRACTF128 VMASKMOVPS VMASKMOVPD
+syn keyword masmOpcode		VPERMILPS VPERMILPD VPERM2F128
+syn keyword masmOpcode		VZEROALL VZEROUPPER
+
 " Other opcodes in Pentium and later processors
 syn keyword masmOpcode		CMPXCHG8B CPUID UD2
 syn keyword masmOpcode		RSM RDMSR WRMSR RDPMC RDTSC SYSENTER SYSEXIT
 syn match   masmOpcode	   "CMOV\(P[EO]\|\(N\?\([ABGL]E\?\|[CEOPSZ]\)\)\)\>"
 
 
-" Define the default highlighting.
-" For version 5.7 and earlier: only when not done already
-" For version 5.8 and later: only when an item doesn't have highlighting yet
-if version >= 508 || !exists("did_masm_syntax_inits")
-  if version < 508
-    let did_masm_syntax_inits = 1
-    command -nargs=+ HiLink hi link <args>
-  else
-    command -nargs=+ HiLink hi def link <args>
-  endif
+" The default highlighting
+hi def link masmLabel		PreProc
+hi def link masmComment		Comment
+hi def link masmDirective	Statement
+hi def link masmType		Type
+hi def link masmOperator	Type
+hi def link masmOption		Special
+hi def link masmRegister	Special
+hi def link masmString		String
+hi def link masmText		String
+hi def link masmTitle		Title
+hi def link masmOpcode		Statement
+hi def link masmOpFloat		Statement
 
-  " The default methods for highlighting.  Can be overridden later
-  HiLink masmLabel	PreProc
-  HiLink masmComment	Comment
-  HiLink masmDirective	Statement
-  HiLink masmType	Type
-  HiLink masmOperator	Type
-  HiLink masmOption	Special
-  HiLink masmRegister	Special
-  HiLink masmString	String
-  HiLink masmText	String
-  HiLink masmTitle	Title
-  HiLink masmOpcode	Statement
-  HiLink masmOpFloat	Statement
+hi def link masmHexadecimal	Number
+hi def link masmDecimal		Number
+hi def link masmOctal		Number
+hi def link masmBinary		Number
+hi def link masmFloatRaw	Number
+hi def link masmFloat		Number
 
-  HiLink masmHexadecimal Number
-  HiLink masmDecimal	Number
-  HiLink masmOctal	Number
-  HiLink masmBinary	Number
-  HiLink masmFloatRaw	Number
-  HiLink masmFloat	Number
+hi def link masmIdentifier	Identifier
 
-  HiLink masmIdentifier Identifier
-
-  syntax sync minlines=50
-
-  delcommand HiLink
-endif
+syntax sync minlines=50
 
 let b:current_syntax = "masm"