Mark XACQUIRE_PREFIX/XRELEASE_PREFIX as isAsmParserOnly so they'll disappear from the disassembler table build without custom filtering code.

llvm-svn: 201215

llvm/lib/Target/X86/X86InstrTSX.td

@@ -40,7 +40,8 @@ def XABORT : Ii8<0xc6, MRM_F8, (outs), (ins i8imm:$imm),
 
 // HLE prefixes
 
+let isAsmParserOnly = 1 in {
 def XACQUIRE_PREFIX : I<0xF2, RawFrm, (outs), (ins), "xacquire", []>, Requires<[HasHLE]>;
-
 def XRELEASE_PREFIX : I<0xF3, RawFrm, (outs), (ins), "xrelease", []>, Requires<[HasHLE]>;
+}
 

llvm/utils/TableGen/X86RecognizableInstr.cpp

@@ -413,12 +413,6 @@ RecognizableInstr::filter_ret RecognizableInstr::filter() const {
   if (Name == "VMASKMOVDQU64")
     return FILTER_WEAK;
 
-  // XACQUIRE and XRELEASE reuse REPNE and REP respectively.
-  // For now, just prefer the REP versions.
-  if (Name == "XACQUIRE_PREFIX" ||
-      Name == "XRELEASE_PREFIX")
-    return FILTER_WEAK;
-
   return FILTER_NORMAL;
 }