| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc < %s -mtriple=x86_64-unknown- -mcpu=core2 | FileCheck %s --check-prefixes=CHECK |
| |
| ; Basic 128-bit cmpxchg |
| define void @t1(i128* nocapture %p) nounwind ssp { |
| ; CHECK-LABEL: t1: |
| ; CHECK: # %bb.0: # %entry |
| ; CHECK-NEXT: pushq %rbx |
| ; CHECK-NEXT: xorl %eax, %eax |
| ; CHECK-NEXT: xorl %edx, %edx |
| ; CHECK-NEXT: xorl %ecx, %ecx |
| ; CHECK-NEXT: movl $1, %ebx |
| ; CHECK-NEXT: lock cmpxchg16b (%rdi) |
| ; CHECK-NEXT: popq %rbx |
| ; CHECK-NEXT: retq |
| entry: |
| %r = cmpxchg i128* %p, i128 0, i128 1 seq_cst seq_cst |
| ret void |
| } |
| |
| ; FIXME: Handle 128-bit atomicrmw/load atomic/store atomic |
