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