Flag unallocatable register classes instead of giving them empty

allocation orders.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132509 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 18 deletions

diff --git a/lib/Target/XCore/XCoreRegisterInfo.td b/lib/Target/XCore/XCoreRegisterInfo.td
index 765f717e20..b1ba964069 100644
--- a/lib/Target/XCore/XCoreRegisterInfo.td
+++ b/lib/Target/XCore/XCoreRegisterInfo.td
@@ -70,22 +70,7 @@ def GRRegs : RegisterClass<"XCore", [i32], 32,
   }];
 }
 
-def RRegs : RegisterClass<"XCore", [i32], 32,
-  // Reserved
-  [CP, DP, SP, LR]> {
-  let MethodProtos = [{
-    iterator allocation_order_begin(const MachineFunction &MF) const;
-    iterator allocation_order_end(const MachineFunction &MF) const;
-  }];
-  let MethodBodies = [{
-    RRegsClass::iterator
-    RRegsClass::allocation_order_begin(const MachineFunction &MF) const {
-      return begin();
-    }
-    RRegsClass::iterator
-    RRegsClass::allocation_order_end(const MachineFunction &MF) const {
-      // No allocatable registers
-      return begin();
-    }
-  }];
+// Reserved
+def RRegs : RegisterClass<"XCore", [i32], 32, [CP, DP, SP, LR]> {
+  let isAllocatable = 0;
 }