fix PR8686, accepting a 'b' suffix at the end of all the setcc

instructions.  I choose to handle this with an asmparser hack,
though it could be handled by changing all the instruction definitions
to allow be "setneb" instead of "setne".  The asm parser hack is
better in this case, because we want the disassembler to produce
setne, not setneb.

llvm-svn: 120260

llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp

@@ -622,6 +622,11 @@ ParseInstruction(StringRef Name, SMLoc NameLoc,
                  SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
   StringRef PatchedName = Name;
 
+  // FIXME: Hack to recognize setneb as setne.
+  if (PatchedName.startswith("set") && PatchedName.endswith("b") &&
+      PatchedName != "setb" && PatchedName != "setnb")
+    PatchedName = PatchedName.substr(0, Name.size()-1);
+  
   // FIXME: Hack to recognize cmp<comparison code>{ss,sd,ps,pd}.
   const MCExpr *ExtraImmOp = 0;
   if ((PatchedName.startswith("cmp") || PatchedName.startswith("vcmp")) &&

llvm/test/MC/X86/x86-32.s

@@ -543,7 +543,10 @@ popfl
 	setng	%bl
 	setnle	%bl
 
-
+// PR8686
+        setneb  %cl // CHECK: setne %cl
+	setcb	%bl // CHECK: setb %bl
+	setnaeb	%bl // CHECK: setb %bl
 
 
 // CHECK: lcalll	$31438, $31438