diff --git a/llvm/lib/Target/X86/X86InstrExtension.td b/llvm/lib/Target/X86/X86InstrExtension.td
index 44a02b8a2ec2..af43d9f53325 100644
--- a/llvm/lib/Target/X86/X86InstrExtension.td
+++ b/llvm/lib/Target/X86/X86InstrExtension.td
@@ -98,22 +98,22 @@ let hasSideEffects = 0, isCodeGenOnly = 1 in {
 def MOVZX32_NOREXrr8 : I<0xB6, MRMSrcReg,
                          (outs GR32_NOREX:$dst), (ins GR8_NOREX:$src),
                          "movz{bl|x}\t{$src, $dst|$dst, $src}  # NOREX",
-                         [], IIC_MOVZX>, TB, Sched<[WriteALU]>;
+                         [], IIC_MOVZX>, TB, OpSize32, Sched<[WriteALU]>;
 let mayLoad = 1 in
 def MOVZX32_NOREXrm8 : I<0xB6, MRMSrcMem,
                          (outs GR32_NOREX:$dst), (ins i8mem_NOREX:$src),
                          "movz{bl|x}\t{$src, $dst|$dst, $src}  # NOREX",
-                         [], IIC_MOVZX>, TB, Sched<[WriteALULd]>;
+                         [], IIC_MOVZX>, TB, OpSize32, Sched<[WriteALULd]>;
 
 def MOVSX32_NOREXrr8 : I<0xBE, MRMSrcReg,
                          (outs GR32_NOREX:$dst), (ins GR8_NOREX:$src),
                          "movs{bl|x}\t{$src, $dst|$dst, $src}  # NOREX",
-                         [], IIC_MOVSX>, TB, Sched<[WriteALU]>;
+                         [], IIC_MOVSX>, TB, OpSize32, Sched<[WriteALU]>;
 let mayLoad = 1 in
 def MOVSX32_NOREXrm8 : I<0xBE, MRMSrcMem,
                          (outs GR32_NOREX:$dst), (ins i8mem_NOREX:$src),
                          "movs{bl|x}\t{$src, $dst|$dst, $src}  # NOREX",
-                         [], IIC_MOVSX>, TB, Sched<[WriteALULd]>;
+                         [], IIC_MOVSX>, TB, OpSize32, Sched<[WriteALULd]>;
 }
 
 // MOVSX64rr8 always has a REX prefix and it has an 8-bit register