tblgen/AsmMatcher: Change AsmOperandClass to allow a list of superclasses instead of just one.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104452 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td
index 803ca2f..5a5535a 100644
--- a/lib/Target/X86/X86InstrInfo.td
+++ b/lib/Target/X86/X86InstrInfo.td
@@ -195,15 +195,15 @@
 //
 def X86MemAsmOperand : AsmOperandClass {
   let Name = "Mem";
-  let SuperClass = ?;
+  let SuperClasses = [];
 }
 def X86NoSegMemAsmOperand : AsmOperandClass {
   let Name = "NoSegMem";
-  let SuperClass = X86MemAsmOperand;
+  let SuperClasses = [X86MemAsmOperand];
 }
 def X86AbsMemAsmOperand : AsmOperandClass {
   let Name = "AbsMem";
-  let SuperClass = X86NoSegMemAsmOperand;
+  let SuperClasses = [X86NoSegMemAsmOperand];
 }
 class X86MemOperand<string printMethod> : Operand<iPTR> {
   let PrintMethod = printMethod;
@@ -272,12 +272,12 @@
 
 def ImmSExt32AsmOperand : AsmOperandClass {
   let Name = "ImmSExt32";
-  let SuperClass = ImmAsmOperand;
+  let SuperClasses = [ImmAsmOperand];
 }
 
 def ImmSExt8AsmOperand : AsmOperandClass {
   let Name = "ImmSExt8";
-  let SuperClass = ImmSExt32AsmOperand;
+  let SuperClasses = [ImmSExt32AsmOperand];
 }
 
 // A couple of more descriptive operand definitions.