diff --git a/lib/Target/X86/X86InstrFPStack.td b/lib/Target/X86/X86InstrFPStack.td
index e1abf26664b..6cd5e79a15a 100644
--- a/lib/Target/X86/X86InstrFPStack.td
+++ b/lib/Target/X86/X86InstrFPStack.td
@@ -636,12 +636,12 @@ def FCOMPP : I<0xDE, MRM_D9, (outs), (ins), "fcompp", [], IIC_FCOMPP>;
 def FXSAVE : I<0xAE, MRM0m, (outs opaque512mem:$dst), (ins),
                "fxsave\t$dst", [], IIC_FXSAVE>, TB;
 def FXSAVE64 : RI<0xAE, MRM0m, (outs opaque512mem:$dst), (ins),
-                  "fxsave{q|64}\t$dst", [], IIC_FXSAVE>, TB,
+                  "fxsave64\t$dst", [], IIC_FXSAVE>, TB,
                   Requires<[In64BitMode]>;
 def FXRSTOR : I<0xAE, MRM1m, (outs), (ins opaque512mem:$src),
                 "fxrstor\t$src", [], IIC_FXRSTOR>, TB;
 def FXRSTOR64 : RI<0xAE, MRM1m, (outs), (ins opaque512mem:$src),
-                  "fxrstor{q|64}\t$src", [], IIC_FXRSTOR>, TB,
+                  "fxrstor64\t$src", [], IIC_FXRSTOR>, TB,
                   Requires<[In64BitMode]>;
 } // SchedRW
 
diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td
index e850ebdd355..7d5104d7fb0 100644
--- a/lib/Target/X86/X86InstrInfo.td
+++ b/lib/Target/X86/X86InstrInfo.td
@@ -2564,6 +2564,12 @@ def : MnemonicAlias<"fnstsww",  "fnstsw",   "att">;
 def : MnemonicAlias<"fucomip",  "fucompi",  "att">;
 def : MnemonicAlias<"fwait",    "wait">;
 
+def : MnemonicAlias<"fxsaveq",   "fxsave64",   "att">;
+def : MnemonicAlias<"fxrstorq",  "fxrstor64",  "att">;
+def : MnemonicAlias<"xsaveq",    "xsave64",    "att">;
+def : MnemonicAlias<"xrstorq",   "xrstor64",   "att">;
+def : MnemonicAlias<"xsaveoptq", "xsaveopt64", "att">;
+
 
 class CondCodeAlias<string Prefix,string Suffix, string OldCond, string NewCond,
                     string VariantName>
diff --git a/lib/Target/X86/X86InstrSystem.td b/lib/Target/X86/X86InstrSystem.td
index 07837bda392..b1bcd635c85 100644
--- a/lib/Target/X86/X86InstrSystem.td
+++ b/lib/Target/X86/X86InstrSystem.td
@@ -486,15 +486,15 @@ let Uses = [RDX, RAX] in {
   def XSAVE : I<0xAE, MRM4m, (outs opaque512mem:$dst), (ins),
                "xsave\t$dst", []>, TB;
   def XSAVE64 : RI<0xAE, MRM4m, (outs opaque512mem:$dst), (ins),
-                 "xsave{q|64}\t$dst", []>, TB, Requires<[In64BitMode]>;
+                 "xsave64\t$dst", []>, TB, Requires<[In64BitMode]>;
   def XRSTOR : I<0xAE, MRM5m, (outs), (ins opaque512mem:$dst),
                "xrstor\t$dst", []>, TB;
   def XRSTOR64 : RI<0xAE, MRM5m, (outs), (ins opaque512mem:$dst),
-                 "xrstor{q|64}\t$dst", []>, TB, Requires<[In64BitMode]>;
+                 "xrstor64\t$dst", []>, TB, Requires<[In64BitMode]>;
   def XSAVEOPT : I<0xAE, MRM6m, (outs opaque512mem:$dst), (ins),
                   "xsaveopt\t$dst", []>, TB;
   def XSAVEOPT64 : RI<0xAE, MRM6m, (outs opaque512mem:$dst), (ins),
-                    "xsaveopt{q|64}\t$dst", []>, TB, Requires<[In64BitMode]>;
+                    "xsaveopt64\t$dst", []>, TB, Requires<[In64BitMode]>;
 }
 } // SchedRW
 
diff --git a/test/MC/Disassembler/X86/x86-64.txt b/test/MC/Disassembler/X86/x86-64.txt
index e67a4f9383e..a2a179eb0c0 100644
--- a/test/MC/Disassembler/X86/x86-64.txt
+++ b/test/MC/Disassembler/X86/x86-64.txt
@@ -116,13 +116,13 @@
 # CHECK: xabort $13
 0xc6 0xf8 0x0d
 
-# CHECK: xsaveq (%rax)
+# CHECK: xsave64 (%rax)
 0x48 0x0f 0xae 0x20
 
-# CHECK: xrstorq (%rax)
+# CHECK: xrstor64 (%rax)
 0x48 0x0f 0xae 0x28
 
-# CHECK: xsaveoptq (%rax)
+# CHECK: xsaveopt64 (%rax)
 0x48 0x0f 0xae 0x30
 
 # CHECK: clac
diff --git a/test/MC/X86/intel-syntax.s b/test/MC/X86/intel-syntax.s
index c027aa426f3..fce0c65781c 100644
--- a/test/MC/X86/intel-syntax.s
+++ b/test/MC/X86/intel-syntax.s
@@ -586,8 +586,8 @@ fdiv ST(1)
 fdivr ST(1)
 
 
-// CHECK: fxsaveq (%rax)
-// CHECK: fxrstorq (%rax)
+// CHECK: fxsave64 (%rax)
+// CHECK: fxrstor64 (%rax)
 fxsave64 opaque ptr [rax]
 fxrstor64 opaque ptr [rax]
 
diff --git a/test/MC/X86/x86_64-encoding.s b/test/MC/X86/x86_64-encoding.s
index 40b93f0a7d0..62af1bdb235 100644
--- a/test/MC/X86/x86_64-encoding.s
+++ b/test/MC/X86/x86_64-encoding.s
@@ -200,14 +200,22 @@ sha256msg2 (%rax), %xmm2
 // CHECK: encoding: [0x48,0x8b,0x04,0xe1]
           movq  (%rcx,%riz,8), %rax
 
-// CHECK: fxsaveq (%rax)
+// CHECK: fxsave64 (%rax)
 // CHECK: encoding: [0x48,0x0f,0xae,0x00]
           fxsaveq (%rax)
 
-// CHECK: fxrstorq (%rax)
+// CHECK: fxsave64 (%rax)
+// CHECK: encoding: [0x48,0x0f,0xae,0x00]
+          fxsave64 (%rax)
+
+// CHECK: fxrstor64 (%rax)
 // CHECK: encoding: [0x48,0x0f,0xae,0x08]
           fxrstorq (%rax)
 
+// CHECK: fxrstor64 (%rax)
+// CHECK: encoding: [0x48,0x0f,0xae,0x08]
+          fxrstor64 (%rax)
+
 // CHECK: leave
 // CHECK:  encoding: [0xc9]
         	leave