1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc -mtriple=x86_64-unknown-linux-gnu -show-mc-encoding < %s | FileCheck %s 3 4@a = external dso_local global { { i64 } } 5 6define i32 @atomic_global() nounwind { 7; CHECK-LABEL: atomic_global: 8; CHECK: # %bb.0: # %entry 9; CHECK-NEXT: xorl %eax, %eax # encoding: [0x31,0xc0] 10; CHECK-NEXT: lock btsq %rax, a(%rip) # encoding: [0xf0,0x48,0x0f,0xab,0x05,A,A,A,A] 11; CHECK-NEXT: # fixup A - offset: 5, value: a-4, kind: reloc_riprel_4byte 12; CHECK-NEXT: xorl %eax, %eax # encoding: [0x31,0xc0] 13; CHECK-NEXT: retq # encoding: [0xc3] 14entry: 15 %shl.i = shl i64 1, 0 16 %0 = atomicrmw or ptr @a, i64 %shl.i monotonic, align 8 17 %and.i = and i64 %shl.i, %0 18 ret i32 0 19} 20