1; RUN: llc < %s -march=x86-64 -mcpu=core2 | FileCheck %s 2 3; Basic 128-bit cmpxchg 4define void @t1(i128* nocapture %p) nounwind ssp { 5entry: 6; CHECK: movl $1, %ebx 7; CHECK: lock cmpxchg16b 8 %r = cmpxchg i128* %p, i128 0, i128 1 seq_cst seq_cst 9 ret void 10} 11 12; FIXME: Handle 128-bit atomicrmw/load atomic/store atomic 13