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1# RUN: llvm-mc -triple x86_64 -show-encoding %s | FileCheck %s2 3# CHECK: addl %ebx, %ecx4# CHECK: encoding: [0x40,0x01,0xd9]5{rex} addl %ebx, %ecx6 7# CHECK: popcntl %edi, %esi8# CHECK: encoding: [0xf3,0x40,0x0f,0xb8,0xf7]9{rex} popcnt %edi,%esi10