Intrinsics: introduce llvm_any_ty aka ValueType Any

Specifically, gc.result benefits from this greatly. Instead of:

gc.result.int.*
gc.result.float.*
gc.result.ptr.*
...

We now have a gc.result.* that can specialize to literally any type.

Differential Revision: http://reviews.llvm.org/D7020

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226857 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/MachineValueType.h

@@ -152,7 +152,11 @@ namespace llvm {
 
       // iPTR - An int value the size of the pointer of the current
       // target.  This should only be used internal to tblgen!
-      iPTR           = 255
+      iPTR           = 255,
+
+      // Any - Any type. This is used for intrinsics that have overloadings.
+      // This is only for tblgen's consumption!
+      Any            = 256
     };
 
     SimpleValueType SimpleTy;
@@ -245,7 +249,8 @@ namespace llvm {
 
     /// isOverloaded - Return true if this is an overloaded type for TableGen.
     bool isOverloaded() const {
-      return (SimpleTy==MVT::iAny || SimpleTy==MVT::fAny ||
+      return (SimpleTy==MVT::Any  ||
+              SimpleTy==MVT::iAny || SimpleTy==MVT::fAny ||
               SimpleTy==MVT::vAny || SimpleTy==MVT::iPTRAny);
     }
 
@@ -380,6 +385,7 @@ namespace llvm {
       case iAny:
       case fAny:
       case vAny:
+      case Any:
         llvm_unreachable("Value type is overloaded.");
       case Metadata:
         llvm_unreachable("Value type is metadata.");

include/llvm/CodeGen/ValueTypes.td

@@ -98,3 +98,6 @@ def iAny   : ValueType<0  , 254>;
 
 // Pseudo valuetype mapped to the current pointer size.
 def iPTR   : ValueType<0  , 255>;
+
+// Pseudo valuetype to represent "any type of any size".
+def Any    : ValueType<0  , 256>;