diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td
index f6821200357..920ae1a363a 100644
--- a/lib/Target/X86/X86InstrInfo.td
+++ b/lib/Target/X86/X86InstrInfo.td
@@ -307,11 +307,11 @@ def ADDmr32  : I2A32<"add", 0x01, MRMDestMem>;         // [mem32] += R32
 def ADDrm8   : I2A8 <"add", 0x02, MRMSrcMem >;         // R8  += [mem8]
 def ADDrm16  : I2A16<"add", 0x03, MRMSrcMem >, OpSize; // R16 += [mem16]
 def ADDrm32  : I2A32<"add", 0x03, MRMSrcMem >;         // R32 += [mem32]
-def ADDmi8   : I2A8 <"add", 0x80, MRMSrcMem >;         // [mem8] += I8
-def ADDmi16  : I2A16<"add", 0x81, MRMSrcMem >, OpSize; // [mem16] += I16
-def ADDmi32  : I2A32<"add", 0x81, MRMSrcMem >;         // [mem32] += I8
-def ADDmi16b : I2A8 <"add", 0x83, MRMSrcMem >, OpSize; // [mem16] += I8
-def ADDmi32b : I2A8 <"add", 0x83, MRMSrcMem >;         // [mem32] += I32
+def ADDmi8   : I2A8 <"add", 0x80, MRMDestMem>;         // [mem8] += I8
+def ADDmi16  : I2A16<"add", 0x81, MRMDestMem>, OpSize; // [mem16] += I16
+def ADDmi32  : I2A32<"add", 0x81, MRMDestMem>;         // [mem32] += I8
+def ADDmi16b : I2A8 <"add", 0x83, MRMDestMem>, OpSize; // [mem16] += I8
+def ADDmi32b : I2A8 <"add", 0x83, MRMDestMem>;         // [mem32] += I32
 
 def ADCrr32  : I2A32<"adc", 0x11, MRMDestReg>;         // R32 += R32+Carry
 def ADCrm32  : I2A32<"adc", 0x11, MRMSrcMem >;         // R32 += [mem32]+Carry