diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td
index 920ae1a363a..c7756d5b11a 100644
--- a/lib/Target/X86/X86InstrInfo.td
+++ b/lib/Target/X86/X86InstrInfo.td
@@ -332,11 +332,11 @@ def SUBmr32  : I2A32<"sub", 0x29, MRMDestMem>;         // [mem32] -= R32
 def SUBrm8   : I2A8 <"sub", 0x2A, MRMSrcMem >;         // R8  -= [mem8]
 def SUBrm16  : I2A16<"sub", 0x2B, MRMSrcMem >, OpSize; // R16 -= [mem16]
 def SUBrm32  : I2A32<"sub", 0x2B, MRMSrcMem >;         // R32 -= [mem32]
-def SUBmi8   : I2A8 <"sub", 0x80, MRMSrcMem >;         // [mem8] -= I8
-def SUBmi16  : I2A16<"sub", 0x81, MRMSrcMem >, OpSize; // [mem16] -= I16
-def SUBmi32  : I2A32<"sub", 0x81, MRMSrcMem >;         // [mem32] -= I8
-def SUBmi16b : I2A8 <"sub", 0x83, MRMSrcMem >, OpSize; // [mem16] -= I8
-def SUBmi32b : I2A8 <"sub", 0x83, MRMSrcMem >;         // [mem32] -= I32
+def SUBmi8   : I2A8 <"sub", 0x80, MRMDestMem>;         // [mem8] -= I8
+def SUBmi16  : I2A16<"sub", 0x81, MRMDestMem>, OpSize; // [mem16] -= I16
+def SUBmi32  : I2A32<"sub", 0x81, MRMDestMem>;         // [mem32] -= I8
+def SUBmi16b : I2A8 <"sub", 0x83, MRMDestMem>, OpSize; // [mem16] -= I8
+def SUBmi32b : I2A8 <"sub", 0x83, MRMDestMem>;         // [mem32] -= I32
 
 def SBBrr32  : I2A32<"sbb", 0x19, MRMDestReg>;         // R32 -= R32+Borrow
 def SBBrm32  : I2A32<"sbb", 0x19, MRMSrcMem >;         // R32 -= [mem32]+Borrow