diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td
index af61540..6b0a19b 100644
--- a/lib/Target/X86/X86InstrInfo.td
+++ b/lib/Target/X86/X86InstrInfo.td
@@ -2601,58 +2601,51 @@
 // Atomic exchange and and, or, xor
 let Constraints = "$val = $dst", Defs = [EFLAGS],
                   usesCustomDAGSchedInserter = 1 in {
-def ATOMAND32 : I<0xC1, MRMSrcMem,(outs GR32:$dst),(ins i32mem:$ptr, GR32:$val),
+def ATOMAND32 : I<0, Pseudo, (outs GR32:$dst),(ins i32mem:$ptr, GR32:$val),
                "#ATOMAND32 PSUEDO!", 
-               [(set GR32:$dst, (atomic_load_and addr:$ptr, GR32:$val))]>,
-                TB, LOCK;
+               [(set GR32:$dst, (atomic_load_and addr:$ptr, GR32:$val))]>;
 }
 
 let Constraints = "$val = $dst", Defs = [EFLAGS],
                   usesCustomDAGSchedInserter = 1 in {
-def ATOMOR32 : I<0xC1, MRMSrcMem, (outs GR32:$dst),(ins i32mem:$ptr, GR32:$val),
+def ATOMOR32 : I<0, Pseudo, (outs GR32:$dst),(ins i32mem:$ptr, GR32:$val),
                "#ATOMOR32 PSUEDO!", 
-               [(set GR32:$dst, (atomic_load_or addr:$ptr, GR32:$val))]>,
-                TB, LOCK;
+               [(set GR32:$dst, (atomic_load_or addr:$ptr, GR32:$val))]>;
 }
 
 let Constraints = "$val = $dst", Defs = [EFLAGS],
                   usesCustomDAGSchedInserter = 1 in {
-def ATOMXOR32 : I<0xC1, MRMSrcMem,(outs GR32:$dst),(ins i32mem:$ptr, GR32:$val),
+def ATOMXOR32 : I<0, Pseudo,(outs GR32:$dst),(ins i32mem:$ptr, GR32:$val),
                "#ATOMXOR32 PSUEDO!", 
-               [(set GR32:$dst, (atomic_load_xor addr:$ptr, GR32:$val))]>,
-                TB, LOCK;
+               [(set GR32:$dst, (atomic_load_xor addr:$ptr, GR32:$val))]>;
 }
 
 let Constraints = "$val = $dst", Defs = [EFLAGS],
                   usesCustomDAGSchedInserter = 1 in {
-def ATOMMIN32: I<0xC1, MRMSrcMem, (outs GR32:$dst), (ins i32mem:$ptr, GR32:$val),
+def ATOMMIN32: I<0, Pseudo, (outs GR32:$dst), (ins i32mem:$ptr, GR32:$val),
                "#ATOMMIN32 PSUEDO!", 
-               [(set GR32:$dst, (atomic_load_min addr:$ptr, GR32:$val))]>,
-                TB, LOCK;
+               [(set GR32:$dst, (atomic_load_min addr:$ptr, GR32:$val))]>;
 }
 
 let Constraints = "$val = $dst", Defs = [EFLAGS],
                   usesCustomDAGSchedInserter = 1 in {
-def ATOMMAX32: I<0xC1, MRMSrcMem, (outs GR32:$dst),(ins i32mem:$ptr, GR32:$val),
+def ATOMMAX32: I<0, Pseudo, (outs GR32:$dst),(ins i32mem:$ptr, GR32:$val),
                "#ATOMMAX32 PSUEDO!", 
-               [(set GR32:$dst, (atomic_load_max addr:$ptr, GR32:$val))]>,
-                TB, LOCK;
+               [(set GR32:$dst, (atomic_load_max addr:$ptr, GR32:$val))]>;
 }
 
 let Constraints = "$val = $dst", Defs = [EFLAGS],
                   usesCustomDAGSchedInserter = 1 in {
-def ATOMUMIN32: I<0xC1, MRMSrcMem,(outs GR32:$dst),(ins i32mem:$ptr, GR32:$val),
+def ATOMUMIN32: I<0, Pseudo, (outs GR32:$dst),(ins i32mem:$ptr, GR32:$val),
                "#ATOMUMIN32 PSUEDO!", 
-               [(set GR32:$dst, (atomic_load_umin addr:$ptr, GR32:$val))]>,
-                TB, LOCK;
+               [(set GR32:$dst, (atomic_load_umin addr:$ptr, GR32:$val))]>;
 }
 
 let Constraints = "$val = $dst", Defs = [EFLAGS],
                   usesCustomDAGSchedInserter = 1 in {
-def ATOMUMAX32: I<0xC1, MRMSrcMem,(outs GR32:$dst),(ins i32mem:$ptr, GR32:$val),
+def ATOMUMAX32: I<0, Pseudo, (outs GR32:$dst),(ins i32mem:$ptr, GR32:$val),
                "#ATOMUMAX32 PSUEDO!", 
-               [(set GR32:$dst, (atomic_load_umax addr:$ptr, GR32:$val))]>,
-                TB, LOCK;
+               [(set GR32:$dst, (atomic_load_umax addr:$ptr, GR32:$val))]>;
 }
 
 //===----------------------------------------------------------------------===//