diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td
index 445ef6c..b6df3ba 100644
--- a/lib/Target/ARM/ARMInstrInfo.td
+++ b/lib/Target/ARM/ARMInstrInfo.td
@@ -1629,7 +1629,6 @@
   let Inst{23-0} = svc;
 }
 }
-def : MnemonicAlias<"swi", "svc">;
 
 // Store Return State is a system instruction -- for disassembly only
 let isCodeGenOnly = 1 in {  // FIXME: This should not use submode!
@@ -2053,13 +2052,6 @@
 
 } // neverHasSideEffects
 
-// Load / Store Multiple Mnemonic Aliases
-def : MnemonicAlias<"ldmfd", "ldm">;
-def : MnemonicAlias<"ldmia", "ldm">;
-def : MnemonicAlias<"stmfd", "stmdb">;
-def : MnemonicAlias<"stmia", "stm">;
-def : MnemonicAlias<"stmea", "stm">;
-
 // FIXME: remove when we have a way to marking a MI with these properties.
 // FIXME: Should pc be an implicit operand like PICADD, etc?
 let isReturn = 1, isTerminator = 1, isBarrier = 1, mayLoad = 1,
@@ -3307,8 +3299,6 @@
 }
 }
 
-def : InstAlias<"dmb", (DMB 0xf)>, Requires<[IsARM, HasDB]>;
-
 def DSB : AInoP<(outs), (ins memb_opt:$opt), MiscFrm, NoItinerary,
                 "dsb", "\t$opt", []>,
                 Requires<[IsARM, HasDB]> {
@@ -3317,8 +3307,6 @@
   let Inst{3-0} = opt;
 }
 
-def : InstAlias<"dsb", (DSB 0xf)>, Requires<[IsARM, HasDB]>;
-
 // ISB has only full system option
 def ISB : AInoP<(outs), (ins memb_opt:$opt), MiscFrm, NoItinerary,
                 "isb", "\t$opt", []>,
@@ -3328,8 +3316,6 @@
   let Inst{3-0} = opt;
 }
 
-def : InstAlias<"isb", (ISB 0xf)>, Requires<[IsARM, HasDB]>;
-
 let usesCustomInserter = 1 in {
   let Uses = [CPSR] in {
     def ATOMIC_LOAD_ADD_I8 : PseudoInst<
@@ -4064,3 +4050,22 @@
 
 include "ARMInstrNEON.td"
 
+//===----------------------------------------------------------------------===//
+// Assembler aliases
+//
+
+// Memory barriers
+def : InstAlias<"dmb", (DMB 0xf)>, Requires<[IsARM, HasDB]>;
+def : InstAlias<"dsb", (DSB 0xf)>, Requires<[IsARM, HasDB]>;
+def : InstAlias<"isb", (ISB 0xf)>, Requires<[IsARM, HasDB]>;
+
+// System instructions
+def : MnemonicAlias<"swi", "svc">;
+
+// Load / Store Multiple
+def : MnemonicAlias<"ldmfd", "ldm">;
+def : MnemonicAlias<"ldmia", "ldm">;
+def : MnemonicAlias<"stmfd", "stmdb">;
+def : MnemonicAlias<"stmia", "stm">;
+def : MnemonicAlias<"stmea", "stm">;
+